treewide: Per RFC45, remove all unquoted URLs

author: Michael Reilly <OmnipotentEntity@gmail.com> 2020-03-31 21:11:51 -0400
committer: Jörg Thalheim <joerg@thalheim.io> 2020-04-10 17:54:53 +0100
commit: 84cf00f98031e93f389f1eb93c4a7374a33cc0a9 (patch)
tree: 203c51a8740cb4893b8cfc4426d4cd49a97430e0 /pkgs/applications/science
parent: bf5eb87033cc6a5de5cc48da544c17a4dedc790b (diff)
230 files changed, 245 insertions, 245 deletions
diff --git a/pkgs/applications/science/astronomy/astrolabe-generator/default.nix b/pkgs/applications/science/astronomy/astrolabe-generator/default.nix
index 32d89866b5aef..cb3f3131ea14a 100644
--- a/pkgs/applications/science/astronomy/astrolabe-generator/default.nix
+++ b/pkgs/applications/science/astronomy/astrolabe-generator/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib;{
-    homepage = https://www.astrolabeproject.com;
+    homepage = "https://www.astrolabeproject.com";
     description = "A Java-based tool for generating EPS files for constructing astrolabes and related tools";
     license = licenses.gpl3;
     maintainers = [ maintainers.genesis ];
diff --git a/pkgs/applications/science/astronomy/celestia/default.nix b/pkgs/applications/science/astronomy/celestia/default.nix
index e72354c86585f..340641917e4f0 100644
--- a/pkgs/applications/science/astronomy/celestia/default.nix
+++ b/pkgs/applications/science/astronomy/celestia/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Free space simulation";
-    homepage = https://celestia.space/;
+    homepage = "https://celestia.space/";
     license = stdenv.lib.licenses.gpl2;
 
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/astronomy/gildas/default.nix b/pkgs/applications/science/astronomy/gildas/default.nix
index 9908439e10d45..38d8e23a811b3 100644
--- a/pkgs/applications/science/astronomy/gildas/default.nix
+++ b/pkgs/applications/science/astronomy/gildas/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
       extensible. GILDAS is written in Fortran-90, with a
       few parts in C/C++ (mainly keyboard interaction,
       plotting, widgets).'';
-    homepage = http://www.iram.fr/IRAMFR/GILDAS/gildas.html;
+    homepage = "http://www.iram.fr/IRAMFR/GILDAS/gildas.html";
     license = stdenv.lib.licenses.free;
     maintainers = [ stdenv.lib.maintainers.bzizou stdenv.lib.maintainers.smaret ];
     platforms = stdenv.lib.platforms.all;
diff --git a/pkgs/applications/science/astronomy/gpredict/default.nix b/pkgs/applications/science/astronomy/gpredict/default.nix
index f36431beac138..1ae80c0b0aa6a 100644
--- a/pkgs/applications/science/astronomy/gpredict/default.nix
+++ b/pkgs/applications/science/astronomy/gpredict/default.nix
@@ -28,7 +28,7 @@ in stdenv.mkDerivation {
     '';
     license = licenses.gpl2;
     platforms = platforms.linux;
-    homepage = http://gpredict.oz9aec.net/;
+    homepage = "http://gpredict.oz9aec.net/";
     maintainers = [ maintainers.markuskowa maintainers.cmcdragonkai ];
   };
 }
diff --git a/pkgs/applications/science/astronomy/gravit/default.nix b/pkgs/applications/science/astronomy/gravit/default.nix
index 15f72938effe5..0a98563ed0e54 100644
--- a/pkgs/applications/science/astronomy/gravit/default.nix
+++ b/pkgs/applications/science/astronomy/gravit/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
-    homepage = https://gravit.slowchop.com;
+    homepage = "https://gravit.slowchop.com";
     description = "Beautiful OpenGL-based gravity simulator";
     license = stdenv.lib.licenses.gpl2;
 
diff --git a/pkgs/applications/science/astronomy/openspace/default.nix b/pkgs/applications/science/astronomy/openspace/default.nix
index cfdd320d201ca..566fd61f1a7b5 100644
--- a/pkgs/applications/science/astronomy/openspace/default.nix
+++ b/pkgs/applications/science/astronomy/openspace/default.nix
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
 
       WARNING: This build is not very usable for now.
     '';
-    homepage  = https://www.openspaceproject.com/;
+    homepage  = "https://www.openspaceproject.com/";
     license   = stdenv.lib.licenses.mit;
     platforms = stdenv.lib.platforms.linux;
     broken = true; # fails to build
diff --git a/pkgs/applications/science/astronomy/stellarium/default.nix b/pkgs/applications/science/astronomy/stellarium/default.nix
index 3cb34576c46b6..a0cd535f362c5 100644
--- a/pkgs/applications/science/astronomy/stellarium/default.nix
+++ b/pkgs/applications/science/astronomy/stellarium/default.nix
@@ -24,7 +24,7 @@ mkDerivation rec {
 
   meta = with lib; {
     description = "Free open-source planetarium";
-    homepage = http://stellarium.org/;
+    homepage = "http://stellarium.org/";
     license = licenses.gpl2;
 
     platforms = platforms.linux; # should be mesaPlatforms, but we don't have qt on darwin
diff --git a/pkgs/applications/science/astronomy/xplanet/default.nix b/pkgs/applications/science/astronomy/xplanet/default.nix
index f306f9265abad..a314678b6ea3a 100644
--- a/pkgs/applications/science/astronomy/xplanet/default.nix
+++ b/pkgs/applications/science/astronomy/xplanet/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Renders an image of the earth or other planets into the X root window";
-    homepage = http://xplanet.sourceforge.net;
+    homepage = "http://xplanet.sourceforge.net";
     license = licenses.gpl2;
     maintainers = with maintainers; [ lassulus sander ];
     platforms = platforms.all;
diff --git a/pkgs/applications/science/biology/ants/default.nix b/pkgs/applications/science/biology/ants/default.nix
index 6e1a2a3407ee1..20eedfaaa16c3 100644
--- a/pkgs/applications/science/biology/ants/default.nix
+++ b/pkgs/applications/science/biology/ants/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/ANTsX/ANTs;
+    homepage = "https://github.com/ANTsX/ANTs";
     description = "Advanced normalization toolkit for medical image registration and other processing";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/aragorn/default.nix b/pkgs/applications/science/biology/aragorn/default.nix
index a5f0ebc18abd6..956e4d884531c 100644
--- a/pkgs/applications/science/biology/aragorn/default.nix
+++ b/pkgs/applications/science/biology/aragorn/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Detects tRNA, mtRNA, and tmRNA genes in nucleotide sequences";
-    homepage = http://mbio-serv2.mbioekol.lu.se/ARAGORN/;
+    homepage = "http://mbio-serv2.mbioekol.lu.se/ARAGORN/";
     license = licenses.gpl2;
     maintainers = [ maintainers.bzizou ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/bcftools/default.nix b/pkgs/applications/science/biology/bcftools/default.nix
index 4a6a464de4648..b847fd8b5fe47 100644
--- a/pkgs/applications/science/biology/bcftools/default.nix
+++ b/pkgs/applications/science/biology/bcftools/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Tools for manipulating BCF2/VCF/gVCF format, SNP and short indel sequence variants";
     license = licenses.mit;
-    homepage = http://www.htslib.org/;
+    homepage = "http://www.htslib.org/";
     platforms = platforms.unix;
     maintainers = [ maintainers.mimame ];
   };
diff --git a/pkgs/applications/science/biology/bedtools/default.nix b/pkgs/applications/science/biology/bedtools/default.nix
index 9af2ec88c3921..332e06ea0cf5a 100644
--- a/pkgs/applications/science/biology/bedtools/default.nix
+++ b/pkgs/applications/science/biology/bedtools/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "A powerful toolset for genome arithmetic.";
     license = licenses.gpl2;
-    homepage = https://bedtools.readthedocs.io/en/latest/;
+    homepage = "https://bedtools.readthedocs.io/en/latest/";
     maintainers = with maintainers; [ jbedo ];
     platforms = platforms.unix;
   };
diff --git a/pkgs/applications/science/biology/bftools/default.nix b/pkgs/applications/science/biology/bftools/default.nix
index 29e8bca52625a..2ecefee340fd6 100644
--- a/pkgs/applications/science/biology/bftools/default.nix
+++ b/pkgs/applications/science/biology/bftools/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     description = "A bundle of scripts for using Bio-Formats on the command line with bioformats_package.jar already included";
     license = licenses.gpl2;
     platforms = platforms.all;
-    homepage = https://www.openmicroscopy.org/bio-formats/;
+    homepage = "https://www.openmicroscopy.org/bio-formats/";
     maintainers = [ maintainers.tbenst ];
   };
 }
diff --git a/pkgs/applications/science/biology/blast/default.nix b/pkgs/applications/science/biology/blast/default.nix
index ad737c6699d60..95a1b905e9e24 100644
--- a/pkgs/applications/science/biology/blast/default.nix
+++ b/pkgs/applications/science/biology/blast/default.nix
@@ -97,7 +97,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = ''Basic Local Alignment Search Tool (BLAST) finds regions of
     similarity between biological sequences'';
-    homepage = https://blast.ncbi.nlm.nih.gov/Blast.cgi;
+    homepage = "https://blast.ncbi.nlm.nih.gov/Blast.cgi";
     license = licenses.publicDomain;
 
     # Version 2.10.0 fails on Darwin
diff --git a/pkgs/applications/science/biology/bowtie2/default.nix b/pkgs/applications/science/biology/bowtie2/default.nix
index 962428d67cf9c..dc818e2fb8684 100644
--- a/pkgs/applications/science/biology/bowtie2/default.nix
+++ b/pkgs/applications/science/biology/bowtie2/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "An ultrafast and memory-efficient tool for aligning sequencing reads to long reference sequences";
     license = licenses.gpl3;
-    homepage = http://bowtie-bio.sf.net/bowtie2;
+    homepage = "http://bowtie-bio.sf.net/bowtie2";
     maintainers = with maintainers; [ rybern ];
     platforms = platforms.all;
     broken = stdenv.isAarch64;
diff --git a/pkgs/applications/science/biology/bwa/default.nix b/pkgs/applications/science/biology/bwa/default.nix
index 5e39320bf8355..e478c104edef9 100644
--- a/pkgs/applications/science/biology/bwa/default.nix
+++ b/pkgs/applications/science/biology/bwa/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "A software package for mapping low-divergent sequences against a large reference genome, such as the human genome";
     license     = licenses.gpl3;
-    homepage    = http://bio-bwa.sourceforge.net/;
+    homepage    = "http://bio-bwa.sourceforge.net/";
     maintainers = with maintainers; [ luispedro ];
     platforms = [ "x86_64-linux" ];
   };
diff --git a/pkgs/applications/science/biology/cd-hit/default.nix b/pkgs/applications/science/biology/cd-hit/default.nix
index 1a41a28a19aae..0db788b0f7431 100644
--- a/pkgs/applications/science/biology/cd-hit/default.nix
+++ b/pkgs/applications/science/biology/cd-hit/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   '';
   meta = with stdenv.lib; {
     description = "Clustering and comparing protein or nucleotide sequences";
-    homepage = http://weizhongli-lab.org/cd-hit/;
+    homepage = "http://weizhongli-lab.org/cd-hit/";
     license = licenses.gpl2;
     maintainers = [ maintainers.bzizou ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/clustal-omega/default.nix b/pkgs/applications/science/biology/clustal-omega/default.nix
index 00acc25028c03..71cf879853767 100644
--- a/pkgs/applications/science/biology/clustal-omega/default.nix
+++ b/pkgs/applications/science/biology/clustal-omega/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "General purpose multiple sequence alignment program for protein and DNA/RNA";
-    homepage = http://www.clustal.org/omega/;
+    homepage = "http://www.clustal.org/omega/";
     license = licenses.gpl2;
     maintainers = [ maintainers.bzizou ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/cmtk/default.nix b/pkgs/applications/science/biology/cmtk/default.nix
index 1ebfa2fca57a1..41805c15aed59 100644
--- a/pkgs/applications/science/biology/cmtk/default.nix
+++ b/pkgs/applications/science/biology/cmtk/default.nix
@@ -21,6 +21,6 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ tbenst ];
     platforms = platforms.all;
     license     = licenses.gpl3;
-    homepage    = https://www.nitrc.org/projects/cmtk/;
+    homepage    = "https://www.nitrc.org/projects/cmtk/";
   };
 }
diff --git a/pkgs/applications/science/biology/conglomerate/default.nix b/pkgs/applications/science/biology/conglomerate/default.nix
index 23182fcadc6b5..971e2f23055b2 100644
--- a/pkgs/applications/science/biology/conglomerate/default.nix
+++ b/pkgs/applications/science/biology/conglomerate/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/BIC-MNI/conglomerate;
+    homepage = "https://github.com/BIC-MNI/conglomerate";
     description = "More command-line utilities for working with MINC files";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/dcm2niix/default.nix b/pkgs/applications/science/biology/dcm2niix/default.nix
index 7c328034a3062..8ea3588fa8cac 100644
--- a/pkgs/applications/science/biology/dcm2niix/default.nix
+++ b/pkgs/applications/science/biology/dcm2niix/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
       dcm2niix is a designed to convert neuroimaging data from the
       DICOM format to the NIfTI format.
     '';
-    homepage = https://www.nitrc.org/projects/dcm2nii;
+    homepage = "https://www.nitrc.org/projects/dcm2nii";
     license = licenses.bsd3;
     maintainers = [ maintainers.ashgillman ];
     platforms = platforms.all;
diff --git a/pkgs/applications/science/biology/diamond/default.nix b/pkgs/applications/science/biology/diamond/default.nix
index c1d20a11ca96a..dd1e13ec7162e 100644
--- a/pkgs/applications/science/biology/diamond/default.nix
+++ b/pkgs/applications/science/biology/diamond/default.nix
@@ -31,10 +31,10 @@ stdenv.mkDerivation {
       "Fast and sensitive protein alignment using DIAMOND",
       Nature Methods 12, 59-60 (2015).
         '';
-    homepage = https://github.com/bbuchfink/diamond;
+    homepage = "https://github.com/bbuchfink/diamond";
     license = {
       fullName = "University of Tuebingen, Benjamin Buchfink";
-      url = https://raw.githubusercontent.com/bbuchfink/diamond/master/src/COPYING;
+      url = "https://raw.githubusercontent.com/bbuchfink/diamond/master/src/COPYING";
     };
     maintainers = [ maintainers.metabar ];
   };
diff --git a/pkgs/applications/science/biology/ecopcr/default.nix b/pkgs/applications/science/biology/ecopcr/default.nix
index 9e1b16ff94491..2e744c7b2b9ee 100644
--- a/pkgs/applications/science/biology/ecopcr/default.nix
+++ b/pkgs/applications/science/biology/ecopcr/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
       coverage and barcode specificity. New barcode primers can be
       developed using the ecoPrimers software.
     '';
-    homepage = https://git.metabarcoding.org/obitools/ecopcr/wikis/home;
+    homepage = "https://git.metabarcoding.org/obitools/ecopcr/wikis/home";
     license = licenses.cecill20;
     maintainers = [ maintainers.metabar ];
   };
diff --git a/pkgs/applications/science/biology/eggnog-mapper/default.nix b/pkgs/applications/science/biology/eggnog-mapper/default.nix
index e11f4ebf77c54..3ef52e543933b 100644
--- a/pkgs/applications/science/biology/eggnog-mapper/default.nix
+++ b/pkgs/applications/science/biology/eggnog-mapper/default.nix
@@ -33,7 +33,7 @@ python27Packages.buildPythonApplication rec {
   meta = with stdenv.lib; {
     description = "Fast genome-wide functional annotation through orthology assignment";
     license = licenses.gpl2;
-    homepage = https://github.com/eggnogdb/eggnog-mapper/wiki;
+    homepage = "https://github.com/eggnogdb/eggnog-mapper/wiki";
     maintainers = with maintainers; [ luispedro ];
     platforms = platforms.all;
   };
diff --git a/pkgs/applications/science/biology/emboss/default.nix b/pkgs/applications/science/biology/emboss/default.nix
index 2110a9bcfabab..e2374bcd1e2f8 100644
--- a/pkgs/applications/science/biology/emboss/default.nix
+++ b/pkgs/applications/science/biology/emboss/default.nix
@@ -23,6 +23,6 @@ stdenv.mkDerivation {
     data in a variety of formats and even allows transparent retrieval of
     sequence data from the web.''; 
     license     = "GPL2";
-    homepage    = http://emboss.sourceforge.net/;
+    homepage    = "http://emboss.sourceforge.net/";
   };
 }
diff --git a/pkgs/applications/science/biology/est-sfs/default.nix b/pkgs/applications/science/biology/est-sfs/default.nix
index dcc7252335517..1b15c06c670a1 100644
--- a/pkgs/applications/science/biology/est-sfs/default.nix
+++ b/pkgs/applications/science/biology/est-sfs/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://sourceforge.net/projects/est-usfs;
+    homepage = "https://sourceforge.net/projects/est-usfs";
     description = "Estimate the unfolded site frequency spectrum and ancestral states";
     license = licenses.gpl3;
     maintainers = [ maintainers.bzizou ];
diff --git a/pkgs/applications/science/biology/exonerate/default.nix b/pkgs/applications/science/biology/exonerate/default.nix
index 1dd6b44692a38..b2c49ab007676 100644
--- a/pkgs/applications/science/biology/exonerate/default.nix
+++ b/pkgs/applications/science/biology/exonerate/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Generic tool for sequence alignment";
-    homepage = https://www.ebi.ac.uk/about/vertebrate-genomics/software/exonerate;
+    homepage = "https://www.ebi.ac.uk/about/vertebrate-genomics/software/exonerate";
     license = licenses.gpl3;
     maintainers = [ maintainers.bzizou ];
     platforms = platforms.unix ;
diff --git a/pkgs/applications/science/biology/freebayes/default.nix b/pkgs/applications/science/biology/freebayes/default.nix
index 7d0a36e755f62..bd80df56cb905 100644
--- a/pkgs/applications/science/biology/freebayes/default.nix
+++ b/pkgs/applications/science/biology/freebayes/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Bayesian haplotype-based polymorphism discovery and genotyping";
     license     = licenses.mit;
-    homepage    = https://github.com/ekg/freebayes;
+    homepage    = "https://github.com/ekg/freebayes";
     maintainers = with maintainers; [ jdagilliland ];
     platforms = [ "x86_64-linux" ];
   };
diff --git a/pkgs/applications/science/biology/hisat2/default.nix b/pkgs/applications/science/biology/hisat2/default.nix
index 824856301145b..fb7f2cba3de3b 100644
--- a/pkgs/applications/science/biology/hisat2/default.nix
+++ b/pkgs/applications/science/biology/hisat2/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Graph based aligner";
     license = licenses.gpl3;
-    homepage = https://ccb.jhu.edu/software/hisat2/index.shtml;
+    homepage = "https://ccb.jhu.edu/software/hisat2/index.shtml";
     maintainers = with maintainers; [ jbedo ];
     platforms = [ "x86_64-linux" "i686-linux" ];
   };
diff --git a/pkgs/applications/science/biology/hmmer/default.nix b/pkgs/applications/science/biology/hmmer/default.nix
index 69ecb228697b6..3786b62f7477f 100644
--- a/pkgs/applications/science/biology/hmmer/default.nix
+++ b/pkgs/applications/science/biology/hmmer/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
       HMMER is designed to detect remote homologs as sensitively as possible, relying on the strength of its underlying probability models. In the past, this strength came at significant computational expense, but as of the new HMMER3 project, HMMER is now essentially as fast as BLAST.
       HMMER can be downloaded and installed as a command line tool on your own hardware, and now it is also more widely accessible to the scientific community via new search servers at the European Bioinformatics Institute.
     '';
-    homepage = http://hmmer.org/;
+    homepage = "http://hmmer.org/";
     license = licenses.gpl3;
     maintainers = [ maintainers.iimog ];
     platforms = [ "x86_64-linux" "i686-linux" ];
diff --git a/pkgs/applications/science/biology/igv/default.nix b/pkgs/applications/science/biology/igv/default.nix
index 04699a84b692d..aa6c95071b7bb 100644
--- a/pkgs/applications/science/biology/igv/default.nix
+++ b/pkgs/applications/science/biology/igv/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://www.broadinstitute.org/igv/;
+    homepage = "https://www.broadinstitute.org/igv/";
     description = "A visualization tool for interactive exploration of genomic datasets";
     license = licenses.lgpl21;
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/itsx/default.nix b/pkgs/applications/science/biology/itsx/default.nix
index 1ba8cdf22ba02..ac534a4ec3cd4 100644
--- a/pkgs/applications/science/biology/itsx/default.nix
+++ b/pkgs/applications/science/biology/itsx/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Improved software detection and extraction of ITS1 and ITS2 from ribosomal ITS sequences of fungi and other eukaryotes for use in environmental sequencing";
-    homepage = https://microbiology.se/software/itsx/;
+    homepage = "https://microbiology.se/software/itsx/";
     license = licenses.gpl3;
     maintainers = [ maintainers.bzizou ];
     platforms = [ "x86_64-linux" "i686-linux" ];
diff --git a/pkgs/applications/science/biology/iv/default.nix b/pkgs/applications/science/biology/iv/default.nix
index 37abcf396211a..82fe36940081b 100644
--- a/pkgs/applications/science/biology/iv/default.nix
+++ b/pkgs/applications/science/biology/iv/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec
     meta = with stdenv.lib;
       { description = "InterViews graphical library for Neuron";
         license     = licenses.bsd3;
-        homepage    = http://www.neuron.yale.edu/neuron;
+        homepage    = "http://www.neuron.yale.edu/neuron";
         platforms   = platforms.all;
       };
   }
diff --git a/pkgs/applications/science/biology/megahit/default.nix b/pkgs/applications/science/biology/megahit/default.nix
index 86414980177f8..35ef280ed676e 100644
--- a/pkgs/applications/science/biology/megahit/default.nix
+++ b/pkgs/applications/science/biology/megahit/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "An ultra-fast single-node solution for large and complex metagenomics assembly via succinct de Bruijn graph";
     license     = licenses.gpl3;
-    homepage    = https://github.com/voutcn/megahit;
+    homepage    = "https://github.com/voutcn/megahit";
     maintainers = with maintainers; [ luispedro ];
     platforms = [ "x86_64-linux" ];
   };
diff --git a/pkgs/applications/science/biology/messer-slim/default.nix b/pkgs/applications/science/biology/messer-slim/default.nix
index d485666f39313..201e38cfc5383 100644
--- a/pkgs/applications/science/biology/messer-slim/default.nix
+++ b/pkgs/applications/science/biology/messer-slim/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   meta = {
      description = "An evolutionary simulation framework";
-     homepage = https://messerlab.org/slim/;
+     homepage = "https://messerlab.org/slim/";
      license = with stdenv.lib.licenses; [ gpl3 ];
      maintainers = with stdenv.lib.maintainers; [ bzizou ];
      platforms = stdenv.lib.platforms.all;
diff --git a/pkgs/applications/science/biology/migrate/default.nix b/pkgs/applications/science/biology/migrate/default.nix
index d80e6e7b30df6..0e2aa1c1a7915 100644
--- a/pkgs/applications/science/biology/migrate/default.nix
+++ b/pkgs/applications/science/biology/migrate/default.nix
@@ -16,7 +16,7 @@ gccStdenv.mkDerivation rec {
 
   meta = with gccStdenv.lib; {
     description = "Estimates population size, migration, population splitting parameters using genetic/genomic data";
-    homepage = https://peterbeerli.com/migrate-html5/index.html;
+    homepage = "https://peterbeerli.com/migrate-html5/index.html";
     license = licenses.mit;
     maintainers = [ maintainers.bzizou ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/minc-tools/default.nix b/pkgs/applications/science/biology/minc-tools/default.nix
index 4c8b768a56a91..db803ea4922f0 100644
--- a/pkgs/applications/science/biology/minc-tools/default.nix
+++ b/pkgs/applications/science/biology/minc-tools/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/BIC-MNI/minc-tools;
+    homepage = "https://github.com/BIC-MNI/minc-tools";
     description = "Command-line utilities for working with MINC files";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/minimap2/default.nix b/pkgs/applications/science/biology/minimap2/default.nix
index bff2bcf428b53..e33a17537910b 100644
--- a/pkgs/applications/science/biology/minimap2/default.nix
+++ b/pkgs/applications/science/biology/minimap2/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   
   meta = with stdenv.lib; {
     description = "A versatile pairwise aligner for genomic and spliced nucleotide sequences";
-    homepage = https://lh3.github.io/minimap2;
+    homepage = "https://lh3.github.io/minimap2";
     license = licenses.mit;
     platforms = platforms.all;
     maintainers = [ maintainers.arcadio ];
diff --git a/pkgs/applications/science/biology/mni_autoreg/default.nix b/pkgs/applications/science/biology/mni_autoreg/default.nix
index ab22fb7232ffb..254d874f9d912 100644
--- a/pkgs/applications/science/biology/mni_autoreg/default.nix
+++ b/pkgs/applications/science/biology/mni_autoreg/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/BIC-MNI/mni_autoreg;
+    homepage = "https://github.com/BIC-MNI/mni_autoreg";
     description = "Tools for automated registration using the MINC image format";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/mosdepth/default.nix b/pkgs/applications/science/biology/mosdepth/default.nix
index 717b8c3ab2f3f..569c63afa7a16 100644
--- a/pkgs/applications/science/biology/mosdepth/default.nix
+++ b/pkgs/applications/science/biology/mosdepth/default.nix
@@ -38,7 +38,7 @@ in stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "fast BAM/CRAM depth calculation for WGS, exome, or targeted sequencing.";
     license = licenses.mit;
-    homepage = https://github.com/brentp/mosdepth;
+    homepage = "https://github.com/brentp/mosdepth";
     maintainers = with maintainers; [ jbedo ];
     platforms = platforms.linux;
   };
diff --git a/pkgs/applications/science/biology/mrbayes/default.nix b/pkgs/applications/science/biology/mrbayes/default.nix
index 1dd92af58eb1e..8ee7bccf075fe 100644
--- a/pkgs/applications/science/biology/mrbayes/default.nix
+++ b/pkgs/applications/science/biology/mrbayes/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
       MCMC) to approximate the posterior probabilities of trees.
     '';
     license     = "GPL2";
-    homepage    = http://mrbayes.csit.fsu.edu/;
+    homepage    = "http://mrbayes.csit.fsu.edu/";
     platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/applications/science/biology/muscle/default.nix b/pkgs/applications/science/biology/muscle/default.nix
index 9cbabc7ab37ed..7ed18349259e3 100644
--- a/pkgs/applications/science/biology/muscle/default.nix
+++ b/pkgs/applications/science/biology/muscle/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "A multiple sequence alignment method with reduced time and space complexity";
     license     = licenses.publicDomain;
-    homepage    = https://www.drive5.com/muscle/;
+    homepage    = "https://www.drive5.com/muscle/";
     maintainers = [ maintainers.unode ];
     # NOTE: Supposed to be compatible with darwin/intel & PPC but currently fails.
     # Anyone with access to these platforms is welcome to give it a try
diff --git a/pkgs/applications/science/biology/ncbi-tools/default.nix b/pkgs/applications/science/biology/ncbi-tools/default.nix
index 1c24ef0925421..cc8ebf7f37d93 100644
--- a/pkgs/applications/science/biology/ncbi-tools/default.nix
+++ b/pkgs/applications/science/biology/ncbi-tools/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = ''NCBI Bioinformatics toolbox (incl. BLAST)'';
     longDescription = ''The NCBI Bioinformatics toolsbox, including command-line utilties, libraries and include files. No X11 support'';
-    homepage = http://www.ncbi.nlm.nih.gov/IEB/ToolBox/; 
+    homepage = "http://www.ncbi.nlm.nih.gov/IEB/ToolBox/"; 
     license = "GPL";
     priority = 5;   # zlib.so gives a conflict with zlib
     broken = true;
diff --git a/pkgs/applications/science/biology/neuron/default.nix b/pkgs/applications/science/biology/neuron/default.nix
index 4e6d3494c7216..8cad5f466c5f0 100644
--- a/pkgs/applications/science/biology/neuron/default.nix
+++ b/pkgs/applications/science/biology/neuron/default.nix
@@ -78,7 +78,7 @@ stdenv.mkDerivation rec {
                 involving many ion-specific channels, ion accumulation, and second messengers";
 
     license     = licenses.bsd3;
-    homepage    = http://www.neuron.yale.edu/neuron;
+    homepage    = "http://www.neuron.yale.edu/neuron";
     maintainers = [ maintainers.adev ];
     # source claims it's only tested for x86 and powerpc
     platforms   = platforms.x86_64 ++ platforms.i686;
diff --git a/pkgs/applications/science/biology/niftyreg/default.nix b/pkgs/applications/science/biology/niftyreg/default.nix
index 48bd1b21ecd6c..fd7dc4f1fbb4f 100644
--- a/pkgs/applications/science/biology/niftyreg/default.nix
+++ b/pkgs/applications/science/biology/niftyreg/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
-    homepage = http://cmictig.cs.ucl.ac.uk/wiki/index.php/NiftyReg;
+    homepage = "http://cmictig.cs.ucl.ac.uk/wiki/index.php/NiftyReg";
     description = "Medical image registration software";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = [ "x86_64-linux" ];
diff --git a/pkgs/applications/science/biology/niftyseg/default.nix b/pkgs/applications/science/biology/niftyseg/default.nix
index f70054e97716b..38194697223de 100644
--- a/pkgs/applications/science/biology/niftyseg/default.nix
+++ b/pkgs/applications/science/biology/niftyseg/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
-    homepage = http://cmictig.cs.ucl.ac.uk/research/software/software-nifty/niftyseg;
+    homepage = "http://cmictig.cs.ucl.ac.uk/research/software/software-nifty/niftyseg";
     description = "Software for medical image segmentation, bias field correction, and cortical thickness calculation";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/biology/paml/default.nix b/pkgs/applications/science/biology/paml/default.nix
index 731e31c588fa8..7a2dc2782ab0a 100644
--- a/pkgs/applications/science/biology/paml/default.nix
+++ b/pkgs/applications/science/biology/paml/default.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation rec {
     description     = "Phylogenetic Analysis by Maximum Likelihood (PAML)";
     longDescription = ''PAML is a package of programs for phylogenetic analyses of DNA or protein sequences using maximum likelihood. It is maintained and distributed for academic use free of charge by Ziheng Yang. ANSI C source codes are distributed for UNIX/Linux/Mac OSX, and executables are provided for MS Windows. PAML is not good for tree making. It may be used to estimate parameters and test hypotheses to study the evolutionary process, when you have reconstructed trees using other programs such as PAUP*, PHYLIP, MOLPHY, PhyML, RaxML, etc.'';
     license     = "non-commercial";
-    homepage    = http://abacus.gene.ucl.ac.uk/software/paml.html;
+    homepage    = "http://abacus.gene.ucl.ac.uk/software/paml.html";
   };
 }
diff --git a/pkgs/applications/science/biology/platypus/default.nix b/pkgs/applications/science/biology/platypus/default.nix
index 6907c6e3ec82e..30e45d5af0ecb 100644
--- a/pkgs/applications/science/biology/platypus/default.nix
+++ b/pkgs/applications/science/biology/platypus/default.nix
@@ -31,7 +31,7 @@ in stdenv.mkDerivation {
   meta = with stdenv.lib; {
     description = "The Platypus variant caller";
     license = licenses.gpl3;
-    homepage = https://github.com/andyrimmer/Platypus;
+    homepage = "https://github.com/andyrimmer/Platypus";
     maintainers = with maintainers; [ jbedo ];
     platforms = platforms.x86_64;
   };
diff --git a/pkgs/applications/science/biology/plink-ng/default.nix b/pkgs/applications/science/biology/plink-ng/default.nix
index 52f8f70b7796a..13f00c53fe642 100644
--- a/pkgs/applications/science/biology/plink-ng/default.nix
+++ b/pkgs/applications/science/biology/plink-ng/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A comprehensive update to the PLINK association analysis toolset";
-    homepage = https://www.cog-genomics.org/plink2;
+    homepage = "https://www.cog-genomics.org/plink2";
     license = stdenv.lib.licenses.gpl3;
     platforms = stdenv.lib.platforms.linux;
   };
diff --git a/pkgs/applications/science/biology/plink/default.nix b/pkgs/applications/science/biology/plink/default.nix
index cc48a0cb13a93..009e12aa02f0f 100644
--- a/pkgs/applications/science/biology/plink/default.nix
+++ b/pkgs/applications/science/biology/plink/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
   
   meta = {
     description = "Whole genome association toolkit";
-    homepage = http://pngu.mgh.harvard.edu/~purcell/plink/;
+    homepage = "http://pngu.mgh.harvard.edu/~purcell/plink/";
     license = stdenv.lib.licenses.gpl2;
     platforms = stdenv.lib.platforms.all;
     broken = true;
diff --git a/pkgs/applications/science/biology/poretools/default.nix b/pkgs/applications/science/biology/poretools/default.nix
index 4660a776ab219..a9f3fdb246726 100755
--- a/pkgs/applications/science/biology/poretools/default.nix
+++ b/pkgs/applications/science/biology/poretools/default.nix
@@ -16,7 +16,7 @@ pythonPackages.buildPythonPackage rec {
   meta = {
     description = "a toolkit for working with nanopore sequencing data from Oxford Nanopore";
     license = stdenv.lib.licenses.mit;
-    homepage = https://poretools.readthedocs.io/en/latest/;
+    homepage = "https://poretools.readthedocs.io/en/latest/";
     maintainers = [stdenv.lib.maintainers.rybern];
   };
 }
diff --git a/pkgs/applications/science/biology/prodigal/default.nix b/pkgs/applications/science/biology/prodigal/default.nix
index 653f4390488e2..ba51c93c38c25 100644
--- a/pkgs/applications/science/biology/prodigal/default.nix
+++ b/pkgs/applications/science/biology/prodigal/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   
   meta = with stdenv.lib; {
     description = "Fast, reliable protein-coding gene prediction for prokaryotic genomes";
-    homepage = https://github.com/hyattpd/Prodigal;
+    homepage = "https://github.com/hyattpd/Prodigal";
     license = licenses.gpl3;
     platforms = platforms.all;
     maintainers = with maintainers; [ luispedro ];
diff --git a/pkgs/applications/science/biology/raxml/default.nix b/pkgs/applications/science/biology/raxml/default.nix
index d7ee54bfbcf03..5c7353af9315c 100644
--- a/pkgs/applications/science/biology/raxml/default.nix
+++ b/pkgs/applications/science/biology/raxml/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "A tool for Phylogenetic Analysis and Post-Analysis of Large Phylogenies";
     license = licenses.gpl3;
-    homepage = https://sco.h-its.org/exelixis/web/software/raxml/;
+    homepage = "https://sco.h-its.org/exelixis/web/software/raxml/";
     maintainers = [ maintainers.unode ];
     platforms = [ "i686-linux" "x86_64-linux" ];
   };
diff --git a/pkgs/applications/science/biology/samtools/default.nix b/pkgs/applications/science/biology/samtools/default.nix
index f2c5e9f25beba..e750eea89ac9f 100644
--- a/pkgs/applications/science/biology/samtools/default.nix
+++ b/pkgs/applications/science/biology/samtools/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Tools for manipulating SAM/BAM/CRAM format";
     license = licenses.mit;
-    homepage = http://www.htslib.org/;
+    homepage = "http://www.htslib.org/";
     platforms = platforms.unix;
     maintainers = [ maintainers.mimame ];
   };
diff --git a/pkgs/applications/science/biology/samtools/samtools_0_1_19.nix b/pkgs/applications/science/biology/samtools/samtools_0_1_19.nix
index 72d125ef8b6f3..d62c2a1fe7b1a 100644
--- a/pkgs/applications/science/biology/samtools/samtools_0_1_19.nix
+++ b/pkgs/applications/science/biology/samtools/samtools_0_1_19.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Tools for manipulating SAM/BAM/CRAM format";
     license = licenses.mit;
-    homepage = http://samtools.sourceforge.net/;
+    homepage = "http://samtools.sourceforge.net/";
     platforms = platforms.unix;
     maintainers = [ maintainers.unode ];
   };
diff --git a/pkgs/applications/science/biology/snpeff/default.nix b/pkgs/applications/science/biology/snpeff/default.nix
index d700ee50a9c6b..c68fcfada3325 100644
--- a/pkgs/applications/science/biology/snpeff/default.nix
+++ b/pkgs/applications/science/biology/snpeff/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Genetic variant annotation and effect prediction toolbox.";
     license = licenses.lgpl3;
-    homepage = http://snpeff.sourceforge.net/;
+    homepage = "http://snpeff.sourceforge.net/";
     maintainers = with maintainers; [ jbedo ];
     platforms = platforms.all;
   };
diff --git a/pkgs/applications/science/biology/somatic-sniper/default.nix b/pkgs/applications/science/biology/somatic-sniper/default.nix
index 1961c71f43bb0..17d9c3dbb55cd 100644
--- a/pkgs/applications/science/biology/somatic-sniper/default.nix
+++ b/pkgs/applications/science/biology/somatic-sniper/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Identify single nucleotide positions that are different between tumor and normal";
     license = licenses.mit;
-    homepage = https://github.com/genome/somatic-sniper;
+    homepage = "https://github.com/genome/somatic-sniper";
     maintainers = with maintainers; [ jbedo ];
     platforms = platforms.linux;
   };
diff --git a/pkgs/applications/science/biology/sortmerna/default.nix b/pkgs/applications/science/biology/sortmerna/default.nix
index 4adce4461ede6..1f291d1a7008d 100644
--- a/pkgs/applications/science/biology/sortmerna/default.nix
+++ b/pkgs/applications/science/biology/sortmerna/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     description = "Tools for filtering, mapping, and OTU-picking from shotgun genomics data";
     license = licenses.lgpl3;
     platforms = platforms.x86_64;
-    homepage = https://bioinfo.lifl.fr/RNA/sortmerna/;
+    homepage = "https://bioinfo.lifl.fr/RNA/sortmerna/";
     maintainers = with maintainers; [ luispedro ];
   };
 }
diff --git a/pkgs/applications/science/biology/strelka/default.nix b/pkgs/applications/science/biology/strelka/default.nix
index 184dcb48a0de0..a32eddcb1cd93 100644
--- a/pkgs/applications/science/biology/strelka/default.nix
+++ b/pkgs/applications/science/biology/strelka/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Germline and small variant caller";
     license = licenses.gpl3;
-    homepage = https://github.com/Illumina/strelka;
+    homepage = "https://github.com/Illumina/strelka";
     maintainers = with maintainers; [ jbedo ];
     platforms = [ "x86_64-linux" ];
   };
diff --git a/pkgs/applications/science/biology/sumatools/default.nix b/pkgs/applications/science/biology/sumatools/default.nix
index 5230fcd2eb62f..1e3b479d54fc7 100644
--- a/pkgs/applications/science/biology/sumatools/default.nix
+++ b/pkgs/applications/science/biology/sumatools/default.nix
@@ -4,7 +4,7 @@ let
   stdenv = gccStdenv;
   meta = with stdenv.lib; {
     description = "Fast and exact comparison and clustering of sequences";
-    homepage = https://metabarcoding.org/sumatra;
+    homepage = "https://metabarcoding.org/sumatra";
     maintainers = [ maintainers.bzizou ];
     platforms = platforms.unix;
   };
diff --git a/pkgs/applications/science/biology/trimal/default.nix b/pkgs/applications/science/biology/trimal/default.nix
index d4e8fee7bc364..8d7e62b614316 100755
--- a/pkgs/applications/science/biology/trimal/default.nix
+++ b/pkgs/applications/science/biology/trimal/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
     description = "A tool for the automated removal of spurious sequences or poorly aligned regions from a multiple sequence alignment";
     license = licenses.gpl3;
     platforms = platforms.linux;
-    homepage = http://trimal.cgenomics.org;
+    homepage = "http://trimal.cgenomics.org";
     maintainers = [ maintainers.bzizou ];
   };
 }
diff --git a/pkgs/applications/science/biology/varscan/default.nix b/pkgs/applications/science/biology/varscan/default.nix
index 697a444193b11..e97c8f14451f7 100644
--- a/pkgs/applications/science/biology/varscan/default.nix
+++ b/pkgs/applications/science/biology/varscan/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     # through the Office of Technology Management at Washington
     # University School of Medicine.
     license = licenses.unfree;
-    homepage = https://github.com/dkoboldt/varscan;
+    homepage = "https://github.com/dkoboldt/varscan";
     maintainers = with maintainers; [ jbedo ];
     platforms = platforms.all;
   };
diff --git a/pkgs/applications/science/biology/vcftools/default.nix b/pkgs/applications/science/biology/vcftools/default.nix
index f6c9ad029c135..52957b58bc929 100755
--- a/pkgs/applications/science/biology/vcftools/default.nix
+++ b/pkgs/applications/science/biology/vcftools/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
     description = "A set of tools written in Perl and C++ for working with VCF files, such as those generated by the 1000 Genomes Project";
     license = licenses.lgpl3;
     platforms = platforms.linux;
-    homepage = https://vcftools.github.io/index.html;
+    homepage = "https://vcftools.github.io/index.html";
     maintainers = [ maintainers.rybern ];
   };
 }
diff --git a/pkgs/applications/science/chemistry/avogadro/default.nix b/pkgs/applications/science/chemistry/avogadro/default.nix
index 6aca678480dae..96dea10333b34 100644
--- a/pkgs/applications/science/chemistry/avogadro/default.nix
+++ b/pkgs/applications/science/chemistry/avogadro/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   patches = [
     (fetchurl {
-      url = https://data.gpo.zugaina.org/fusion809/sci-chemistry/avogadro/files/avogadro-1.1.0-xlibs.patch;
+      url = "https://data.gpo.zugaina.org/fusion809/sci-chemistry/avogadro/files/avogadro-1.1.0-xlibs.patch";
       sha256 = "1p113v19z3zwr9gxj2k599f8p97a8rwm93pa4amqvd0snn31mw0k";
     })
   ];
diff --git a/pkgs/applications/science/chemistry/gwyddion/default.nix b/pkgs/applications/science/chemistry/gwyddion/default.nix
index 644f609ed0acd..dec63910f7092 100644
--- a/pkgs/applications/science/chemistry/gwyddion/default.nix
+++ b/pkgs/applications/science/chemistry/gwyddion/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
   # it is disabled.
   patches = [ ./codegen.patch ];
   meta = {
-    homepage = http://gwyddion.net/;
+    homepage = "http://gwyddion.net/";
 
     description = "Scanning probe microscopy data visualization and analysis";
 
diff --git a/pkgs/applications/science/chemistry/jmol/default.nix b/pkgs/applications/science/chemistry/jmol/default.nix
index 7259705bc8048..f52621dd71af8 100644
--- a/pkgs/applications/science/chemistry/jmol/default.nix
+++ b/pkgs/applications/science/chemistry/jmol/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
      description = "A Java 3D viewer for chemical structures";
-     homepage = https://sourceforge.net/projects/jmol;
+     homepage = "https://sourceforge.net/projects/jmol";
      license = licenses.lgpl2;
      platforms = platforms.all;
      maintainers = with maintainers; [ timokau mounium ];
diff --git a/pkgs/applications/science/chemistry/molden/default.nix b/pkgs/applications/science/chemistry/molden/default.nix
index 87dae3b14d9e2..5e5df85a52795 100644
--- a/pkgs/applications/science/chemistry/molden/default.nix
+++ b/pkgs/applications/science/chemistry/molden/default.nix
@@ -31,10 +31,10 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
      description = "Display and manipulate molecular structures";
-     homepage = http://www.cmbi.ru.nl/molden/;
+     homepage = "http://www.cmbi.ru.nl/molden/";
      license = {
        fullName = "Free for academic/non-profit use";
-       url = http://www.cmbi.ru.nl/molden/CopyRight.html;
+       url = "http://www.cmbi.ru.nl/molden/CopyRight.html";
        free = false;
      };
      platforms = platforms.linux;
diff --git a/pkgs/applications/science/chemistry/octopus/default.nix b/pkgs/applications/science/chemistry/octopus/default.nix
index a5abbe2d1de6d..f8ce3e925fd9f 100644
--- a/pkgs/applications/science/chemistry/octopus/default.nix
+++ b/pkgs/applications/science/chemistry/octopus/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Real-space time dependent density-functional theory code";
-    homepage = https://octopus-code.org;
+    homepage = "https://octopus-code.org";
     maintainers = with maintainers; [ markuskowa ];
     license = licenses.gpl2;
     platforms = [ "x86_64-linux" ];
diff --git a/pkgs/applications/science/chemistry/openmolcas/default.nix b/pkgs/applications/science/chemistry/openmolcas/default.nix
index d73e86d2f577d..b1720e105fd11 100644
--- a/pkgs/applications/science/chemistry/openmolcas/default.nix
+++ b/pkgs/applications/science/chemistry/openmolcas/default.nix
@@ -74,7 +74,7 @@ in stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Advanced quantum chemistry software package";
-    homepage = https://gitlab.com/Molcas/OpenMolcas;
+    homepage = "https://gitlab.com/Molcas/OpenMolcas";
     maintainers = [ maintainers.markuskowa ];
     license = licenses.lgpl21;
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/chemistry/pymol/default.nix b/pkgs/applications/science/chemistry/pymol/default.nix
index e8b3b23ddd9df..474986901225a 100644
--- a/pkgs/applications/science/chemistry/pymol/default.nix
+++ b/pkgs/applications/science/chemistry/pymol/default.nix
@@ -50,7 +50,7 @@ python3Packages.buildPythonApplication rec {
 
   meta = with lib; {
     description = description;
-    homepage = https://www.pymol.org/;
+    homepage = "https://www.pymol.org/";
     license = licenses.mit;
     maintainers = with maintainers; [ samlich ];
   };
diff --git a/pkgs/applications/science/chemistry/siesta/default.nix b/pkgs/applications/science/chemistry/siesta/default.nix
index 9d7880f57df5a..11f3e551431af 100644
--- a/pkgs/applications/science/chemistry/siesta/default.nix
+++ b/pkgs/applications/science/chemistry/siesta/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation {
          matching the quality of other approaches, such as plane-wave
          and all-electron methods.
       '';
-    homepage = https://www.quantum-espresso.org/;
+    homepage = "https://www.quantum-espresso.org/";
     license = licenses.gpl2;
     platforms = [ "x86_64-linux" ];
     maintainers = [ maintainers.costrouc ];
diff --git a/pkgs/applications/science/electronics/adms/default.nix b/pkgs/applications/science/electronics/adms/default.nix
index 8b95e73b8913b..f55dd2f0528e7 100644
--- a/pkgs/applications/science/electronics/adms/default.nix
+++ b/pkgs/applications/science/electronics/adms/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "automatic device model synthesizer";
-    homepage = https://github.com/Qucs/adms;
+    homepage = "https://github.com/Qucs/adms";
     license = stdenv.lib.licenses.gpl3;
     maintainers = with stdenv.lib.maintainers; [disassembler];
     platforms = with stdenv.lib.platforms; linux;
diff --git a/pkgs/applications/science/electronics/alliance/default.nix b/pkgs/applications/science/electronics/alliance/default.nix
index c863fe6aea856..861f6cea0b4b3 100644
--- a/pkgs/applications/science/electronics/alliance/default.nix
+++ b/pkgs/applications/science/electronics/alliance/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Complete set of free CAD tools and portable libraries for VLSI design";
-    homepage = http://www-asim.lip6.fr/recherche/alliance/;
+    homepage = "http://www-asim.lip6.fr/recherche/alliance/";
     license = with licenses; gpl2Plus;
     maintainers = with maintainers; [ ];
     platforms = with platforms; linux;
diff --git a/pkgs/applications/science/electronics/archimedes/default.nix b/pkgs/applications/science/electronics/archimedes/default.nix
index 016760bde0204..1377231c152b6 100644
--- a/pkgs/applications/science/electronics/archimedes/default.nix
+++ b/pkgs/applications/science/electronics/archimedes/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "GNU package for semiconductor device simulations";
-    homepage = https://www.gnu.org/software/archimedes;
+    homepage = "https://www.gnu.org/software/archimedes";
     license = stdenv.lib.licenses.gpl2Plus;
     platforms = with stdenv.lib.platforms; linux;
   };
diff --git a/pkgs/applications/science/electronics/bitscope/common.nix b/pkgs/applications/science/electronics/bitscope/common.nix
index 9101f1fdbe5e1..acbdeb8cfaa2f 100644
--- a/pkgs/applications/science/electronics/bitscope/common.nix
+++ b/pkgs/applications/science/electronics/bitscope/common.nix
@@ -23,7 +23,7 @@ let
     name = "${toolName}-${version}";
 
     meta = with stdenv.lib; {
-      homepage = http://bitscope.com/software/;
+      homepage = "http://bitscope.com/software/";
       license = licenses.unfree;
       platforms = [ "x86_64-linux" ];
       maintainers = with maintainers; [
diff --git a/pkgs/applications/science/electronics/caneda/default.nix b/pkgs/applications/science/electronics/caneda/default.nix
index ff41a498ae71e..6f832013e8ca2 100644
--- a/pkgs/applications/science/electronics/caneda/default.nix
+++ b/pkgs/applications/science/electronics/caneda/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Open source EDA software focused on easy of use and portability";
-    homepage = http://caneda.org;
+    homepage = "http://caneda.org";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = with stdenv.lib.platforms; linux;
diff --git a/pkgs/applications/science/electronics/dsview/default.nix b/pkgs/applications/science/electronics/dsview/default.nix
index 1e125964d506e..4d3acb331d5da 100644
--- a/pkgs/applications/science/electronics/dsview/default.nix
+++ b/pkgs/applications/science/electronics/dsview/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A GUI program for supporting various instruments from DreamSourceLab, including logic analyzer, oscilloscope, etc";
-    homepage = https://www.dreamsourcelab.com/;
+    homepage = "https://www.dreamsourcelab.com/";
     license = licenses.gpl3Plus;
     platforms = platforms.linux;
     maintainers = [ maintainers.bachp ];
diff --git a/pkgs/applications/science/electronics/dsview/libsigrok4dsl.nix b/pkgs/applications/science/electronics/dsview/libsigrok4dsl.nix
index f5f3ce7435a4a..7915cb0ba4ae7 100644
--- a/pkgs/applications/science/electronics/dsview/libsigrok4dsl.nix
+++ b/pkgs/applications/science/electronics/dsview/libsigrok4dsl.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A fork of the sigrok library for usage with DSView";
-    homepage = https://www.dreamsourcelab.com/;
+    homepage = "https://www.dreamsourcelab.com/";
     license = licenses.gpl3Plus;
     platforms = platforms.linux;
     maintainers = [ maintainers.bachp ];
diff --git a/pkgs/applications/science/electronics/dsview/libsigrokdecode4dsl.nix b/pkgs/applications/science/electronics/dsview/libsigrokdecode4dsl.nix
index b7fe5140864c9..72b2fa1b6854f 100644
--- a/pkgs/applications/science/electronics/dsview/libsigrokdecode4dsl.nix
+++ b/pkgs/applications/science/electronics/dsview/libsigrokdecode4dsl.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A fork of the sigrokdecode library for usage with DSView";
-    homepage = https://www.dreamsourcelab.com/;
+    homepage = "https://www.dreamsourcelab.com/";
     license = licenses.gpl3Plus;
     platforms = platforms.linux;
     maintainers = [ maintainers.bachp ];
diff --git a/pkgs/applications/science/electronics/eagle/eagle7.nix b/pkgs/applications/science/electronics/eagle/eagle7.nix
index a9528b05a3119..af0fb675880ed 100644
--- a/pkgs/applications/science/electronics/eagle/eagle7.nix
+++ b/pkgs/applications/science/electronics/eagle/eagle7.nix
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Schematic editor and PCB layout tool from CadSoft";
-    homepage = http://www.cadsoftusa.com/;
+    homepage = "http://www.cadsoftusa.com/";
     license = licenses.unfree;
     platforms = platforms.linux;
     maintainers = [ maintainers.bjornfor ];
diff --git a/pkgs/applications/science/electronics/fped/default.nix b/pkgs/applications/science/electronics/fped/default.nix
index f93fddba8cb5d..9ef47ae263463 100644
--- a/pkgs/applications/science/electronics/fped/default.nix
+++ b/pkgs/applications/science/electronics/fped/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "An editor that allows the interactive creation of footprints electronic components";
-    homepage = http://projects.qi-hardware.com/index.php/p/fped/;
+    homepage = "http://projects.qi-hardware.com/index.php/p/fped/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ expipiplus1 ];
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/electronics/fritzing/default.nix b/pkgs/applications/science/electronics/fritzing/default.nix
index 127e9c05624d9..a0442db7fed28 100644
--- a/pkgs/applications/science/electronics/fritzing/default.nix
+++ b/pkgs/applications/science/electronics/fritzing/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "An open source prototyping tool for Arduino-based projects";
-    homepage = http://fritzing.org/;
+    homepage = "http://fritzing.org/";
     license = stdenv.lib.licenses.gpl3;
     maintainers = [ stdenv.lib.maintainers.robberer ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/electronics/geda/default.nix b/pkgs/applications/science/electronics/geda/default.nix
index 1aaa5496ff37c..54ab7ec57e277 100644
--- a/pkgs/applications/science/electronics/geda/default.nix
+++ b/pkgs/applications/science/electronics/geda/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Full GPL'd suite of Electronic Design Automation tools";
-    homepage = http://www.geda-project.org/;
+    homepage = "http://www.geda-project.org/";
     maintainers = with maintainers; [ pjones ];
     platforms = platforms.linux;
     license = licenses.gpl2;
diff --git a/pkgs/applications/science/electronics/gerbv/default.nix b/pkgs/applications/science/electronics/gerbv/default.nix
index fa5bdbbebdb6e..b0317551df8dd 100644
--- a/pkgs/applications/science/electronics/gerbv/default.nix
+++ b/pkgs/applications/science/electronics/gerbv/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   version = "2015-10-08";
 
   src = fetchgit {
-    url = git://git.geda-project.org/gerbv.git;
+    url = "git://git.geda-project.org/gerbv.git";
     rev = "76b8b67bfa10823ce98f1c4c3b49a2afcadf7659";
     sha256 = "00jn1xhf6kblxc5gac1wvk8zm12fy6sk81nj3jwdag0z6wk3z446";
   };
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A Gerber (RS-274X) viewer";
-    homepage = http://gerbv.geda-project.org/;
+    homepage = "http://gerbv.geda-project.org/";
     maintainers = with maintainers; [ mog ];
     platforms = platforms.linux;
     license = licenses.gpl2;
diff --git a/pkgs/applications/science/electronics/gtkwave/default.nix b/pkgs/applications/science/electronics/gtkwave/default.nix
index 694adc4d63497..3d75780936e15 100644
--- a/pkgs/applications/science/electronics/gtkwave/default.nix
+++ b/pkgs/applications/science/electronics/gtkwave/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "VCD/Waveform viewer for Unix and Win32";
-    homepage    = http://gtkwave.sourceforge.net;
+    homepage    = "http://gtkwave.sourceforge.net";
     license     = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [ thoughtpolice ];
     platforms   = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/electronics/librepcb/default.nix b/pkgs/applications/science/electronics/librepcb/default.nix
index dacbd948241a6..7e0894fb337de 100644
--- a/pkgs/applications/science/electronics/librepcb/default.nix
+++ b/pkgs/applications/science/electronics/librepcb/default.nix
@@ -31,7 +31,7 @@ mkDerivation {
 
   meta = with lib; {
     description = "A free EDA software to develop printed circuit boards";
-    homepage = https://librepcb.org/;
+    homepage = "https://librepcb.org/";
     maintainers = with maintainers; [ luz ];
     license = licenses.gpl3;
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/electronics/ngspice/default.nix b/pkgs/applications/science/electronics/ngspice/default.nix
index f044f1d88e7be..951e5f66f6eed 100644
--- a/pkgs/applications/science/electronics/ngspice/default.nix
+++ b/pkgs/applications/science/electronics/ngspice/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "The Next Generation Spice (Electronic Circuit Simulator)";
-    homepage = http://ngspice.sourceforge.net;
+    homepage = "http://ngspice.sourceforge.net";
     license = with licenses; [ "BSD" gpl2 ];
     maintainers = with maintainers; [ bgamari rongcuid ];
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/electronics/pcb/default.nix b/pkgs/applications/science/electronics/pcb/default.nix
index 636c494c3409c..4309f52e8b150 100644
--- a/pkgs/applications/science/electronics/pcb/default.nix
+++ b/pkgs/applications/science/electronics/pcb/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Printed Circuit Board editor";
-    homepage = http://pcb.geda-project.org/;
+    homepage = "http://pcb.geda-project.org/";
     maintainers = with maintainers; [ mog ];
     platforms = platforms.linux;
     license = licenses.gpl2;
diff --git a/pkgs/applications/science/electronics/pulseview/default.nix b/pkgs/applications/science/electronics/pulseview/default.nix
index ae9afd95518bf..f43717389b535 100644
--- a/pkgs/applications/science/electronics/pulseview/default.nix
+++ b/pkgs/applications/science/electronics/pulseview/default.nix
@@ -22,7 +22,7 @@ mkDerivation rec {
 
   meta = with lib; {
     description = "Qt-based LA/scope/MSO GUI for sigrok (a signal analysis software suite)";
-    homepage = https://sigrok.org/;
+    homepage = "https://sigrok.org/";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ bjornfor ];
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/electronics/qfsm/default.nix b/pkgs/applications/science/electronics/qfsm/default.nix
index 6ca3f80cefd37..9b6e75c77ba85 100644
--- a/pkgs/applications/science/electronics/qfsm/default.nix
+++ b/pkgs/applications/science/electronics/qfsm/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Graphical editor for finite state machines";
-    homepage = http://qfsm.sourceforge.net/;
+    homepage = "http://qfsm.sourceforge.net/";
     license = stdenv.lib.licenses.gpl3Plus;
     platforms = stdenv.lib.platforms.unix;
   };
diff --git a/pkgs/applications/science/electronics/qucs/default.nix b/pkgs/applications/science/electronics/qucs/default.nix
index 1bfe6df5ff534..62a9ae8b73bee 100644
--- a/pkgs/applications/science/electronics/qucs/default.nix
+++ b/pkgs/applications/science/electronics/qucs/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Integrated circuit simulator";
-    homepage = http://qucs.sourceforge.net;
+    homepage = "http://qucs.sourceforge.net";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = with stdenv.lib.platforms; linux;
diff --git a/pkgs/applications/science/electronics/tkgate/1.x.nix b/pkgs/applications/science/electronics/tkgate/1.x.nix
index 2c346b0e74a07..e6f912616034a 100644
--- a/pkgs/applications/science/electronics/tkgate/1.x.nix
+++ b/pkgs/applications/science/electronics/tkgate/1.x.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Event driven digital circuit simulator with a TCL/TK-based graphical editor";
-    homepage = http://www.tkgate.org/;
+    homepage = "http://www.tkgate.org/";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = [ stdenv.lib.maintainers.peti ];
     hydraPlatforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/electronics/verilog/default.nix b/pkgs/applications/science/electronics/verilog/default.nix
index b707db1416023..fa1efe299829e 100644
--- a/pkgs/applications/science/electronics/verilog/default.nix
+++ b/pkgs/applications/science/electronics/verilog/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Icarus Verilog compiler";
-    repositories.git = https://github.com/steveicarus/iverilog.git;
+    repositories.git = "https://github.com/steveicarus/iverilog.git";
     homepage = "http://iverilog.icarus.com/";
     license = licenses.lgpl21;
     maintainers = with maintainers; [ winden ];
diff --git a/pkgs/applications/science/electronics/xcircuit/default.nix b/pkgs/applications/science/electronics/xcircuit/default.nix
index d10b486492e0b..52fe9b0374143 100644
--- a/pkgs/applications/science/electronics/xcircuit/default.nix
+++ b/pkgs/applications/science/electronics/xcircuit/default.nix
@@ -27,7 +27,7 @@ in stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Generic drawing program tailored to circuit diagrams";
-    homepage = http://opencircuitdesign.com/xcircuit;
+    homepage = "http://opencircuitdesign.com/xcircuit";
     license = licenses.gpl2;
     platforms = platforms.linux;
     maintainers = with maintainers; [ spacefrogg thoughtpolice ];
diff --git a/pkgs/applications/science/electronics/xoscope/default.nix b/pkgs/applications/science/electronics/xoscope/default.nix
index 829caacb55cb3..f8a68f31f4641 100644
--- a/pkgs/applications/science/electronics/xoscope/default.nix
+++ b/pkgs/applications/science/electronics/xoscope/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Oscilloscope through the sound card";
-    homepage = http://xoscope.sourceforge.net;
+    homepage = "http://xoscope.sourceforge.net";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = with stdenv.lib.platforms; linux;
diff --git a/pkgs/applications/science/geometry/drgeo/default.nix b/pkgs/applications/science/geometry/drgeo/default.nix
index e8ae4d01a6d6a..7bae3d414cbf9 100644
--- a/pkgs/applications/science/geometry/drgeo/default.nix
+++ b/pkgs/applications/science/geometry/drgeo/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Interactive geometry program";
-    homepage = https://sourceforge.net/projects/ofset;
+    homepage = "https://sourceforge.net/projects/ofset";
     license = licenses.gpl2;
     platforms = platforms.linux;
   };
diff --git a/pkgs/applications/science/geometry/tetgen/1.4.nix b/pkgs/applications/science/geometry/tetgen/1.4.nix
index 3a2dbf180ee31..9dd2547368345 100644
--- a/pkgs/applications/science/geometry/tetgen/1.4.nix
+++ b/pkgs/applications/science/geometry/tetgen/1.4.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Quality Tetrahedral Mesh Generator and 3D Delaunay Triangulator";
-    homepage = http://tetgen.org/;
+    homepage = "http://tetgen.org/";
     license = stdenv.lib.licenses.mit;
     platforms = stdenv.lib.platforms.linux;
   };
diff --git a/pkgs/applications/science/geometry/tetgen/default.nix b/pkgs/applications/science/geometry/tetgen/default.nix
index 0d3a7cc2bc23a..d12e8e35844fe 100644
--- a/pkgs/applications/science/geometry/tetgen/default.nix
+++ b/pkgs/applications/science/geometry/tetgen/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
   meta = {
     inherit version;
     description = "Quality Tetrahedral Mesh Generator and 3D Delaunay Triangulator";
-    homepage = http://tetgen.org/;
+    homepage = "http://tetgen.org/";
     license = stdenv.lib.licenses.agpl3Plus;
     platforms = stdenv.lib.platforms.linux;
   };
diff --git a/pkgs/applications/science/logic/abella/default.nix b/pkgs/applications/science/logic/abella/default.nix
index 7078fd454a0af..3d9a2e9bd67b0 100644
--- a/pkgs/applications/science/logic/abella/default.nix
+++ b/pkgs/applications/science/logic/abella/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
       of programming languages and other logical systems which manipulate
       objects with binding.
     '';
-    homepage = http://abella-prover.org/;
+    homepage = "http://abella-prover.org/";
     license = stdenv.lib.licenses.gpl3;
     maintainers = with stdenv.lib.maintainers; [ bcdarwin ciil ];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/applications/science/logic/acgtk/default.nix b/pkgs/applications/science/logic/acgtk/default.nix
index b7dc957124761..ccd0800050761 100644
--- a/pkgs/applications/science/logic/acgtk/default.nix
+++ b/pkgs/applications/science/logic/acgtk/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   version = "1.5.1";
 
   src = fetchurl {
-    url = https://acg.loria.fr/software/acg-1.5.1-20191113.tar.gz;
+    url = "https://acg.loria.fr/software/acg-1.5.1-20191113.tar.gz";
     sha256 = "17595qfwhzz5q091ak6i6bg5wlppbn8zfn58x3hmmmjvx2yfajn1";
   };
 
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
   inherit (dune) installPhase;
 
   meta = with stdenv.lib; {
-    homepage = https://acg.loria.fr/;
+    homepage = "https://acg.loria.fr/";
     description = "A toolkit for developing ACG signatures and lexicon";
     license = licenses.cecill20;
     inherit (ocamlPackages.ocaml.meta) platforms;
diff --git a/pkgs/applications/science/logic/aiger/default.nix b/pkgs/applications/science/logic/aiger/default.nix
index 0f65c9b7eaea4..aa5a59ed298a1 100644
--- a/pkgs/applications/science/logic/aiger/default.nix
+++ b/pkgs/applications/science/logic/aiger/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "And-Inverter Graph (AIG) utilities";
-    homepage    = http://fmv.jku.at/aiger/;
+    homepage    = "http://fmv.jku.at/aiger/";
     license     = stdenv.lib.licenses.mit;
     maintainers = with stdenv.lib.maintainers; [ thoughtpolice ];
     platforms   = stdenv.lib.platforms.unix;
diff --git a/pkgs/applications/science/logic/aspino/default.nix b/pkgs/applications/science/logic/aspino/default.nix
index 82458d7c5663c..c1cf9034c02a3 100644
--- a/pkgs/applications/science/logic/aspino/default.nix
+++ b/pkgs/applications/science/logic/aspino/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ gebner ];
     platforms = platforms.unix;
     license = licenses.asl20;
-    homepage = https://alviano.net/software/maxino/;
+    homepage = "https://alviano.net/software/maxino/";
     # See pkgs/applications/science/logic/glucose/default.nix
     badPlatforms = [ "aarch64-linux" ];
   };
diff --git a/pkgs/applications/science/logic/avy/default.nix b/pkgs/applications/science/logic/avy/default.nix
index b43e0c6fbf1a6..78ed641a809a2 100644
--- a/pkgs/applications/science/logic/avy/default.nix
+++ b/pkgs/applications/science/logic/avy/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "AIGER model checking for Property Directed Reachability";
-    homepage    = https://arieg.bitbucket.io/avy/;
+    homepage    = "https://arieg.bitbucket.io/avy/";
     license     = stdenv.lib.licenses.mit;
     maintainers = with stdenv.lib.maintainers; [ thoughtpolice ];
     platforms   = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/logic/beluga/default.nix b/pkgs/applications/science/logic/beluga/default.nix
index da0e9bf1c1dd4..55cee9b7e17c1 100644
--- a/pkgs/applications/science/logic/beluga/default.nix
+++ b/pkgs/applications/science/logic/beluga/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "A functional language for reasoning about formal systems";
-    homepage    = http://complogic.cs.mcgill.ca/beluga/;
+    homepage    = "http://complogic.cs.mcgill.ca/beluga/";
     license     = stdenv.lib.licenses.gpl3Plus;
     maintainers = [ stdenv.lib.maintainers.bcdarwin ];
     platforms   = stdenv.lib.platforms.unix;
diff --git a/pkgs/applications/science/logic/boolector/default.nix b/pkgs/applications/science/logic/boolector/default.nix
index 4cf0b0f1ea1e2..105e911ed4fd1 100644
--- a/pkgs/applications/science/logic/boolector/default.nix
+++ b/pkgs/applications/science/logic/boolector/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "An extremely fast SMT solver for bit-vectors and arrays";
-    homepage    = https://boolector.github.io;
+    homepage    = "https://boolector.github.io";
     license     = licenses.mit;
     platforms   = platforms.linux;
     maintainers = with maintainers; [ thoughtpolice ];
diff --git a/pkgs/applications/science/logic/cedille/default.nix b/pkgs/applications/science/logic/cedille/default.nix
index 4cef49788c044..2ac96df66a68d 100644
--- a/pkgs/applications/science/logic/cedille/default.nix
+++ b/pkgs/applications/science/logic/cedille/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "An interactive theorem-prover and dependently typed programming language, based on extrinsic (aka Curry-style) type theory";
-    homepage = https://cedille.github.io/;
+    homepage = "https://cedille.github.io/";
     license = licenses.mit;
     maintainers = with maintainers; [ marsam mpickering ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/logic/celf/default.nix b/pkgs/applications/science/logic/celf/default.nix
index 708270f772fd2..9dc20a61a4d2c 100644
--- a/pkgs/applications/science/logic/celf/default.nix
+++ b/pkgs/applications/science/logic/celf/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Linear logic programming system";
-    homepage = https://github.com/clf/celf;
+    homepage = "https://github.com/clf/celf";
     license = licenses.gpl3;
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/logic/clprover/clprover.nix b/pkgs/applications/science/logic/clprover/clprover.nix
index 0319069660edd..e53bbe6883718 100644
--- a/pkgs/applications/science/logic/clprover/clprover.nix
+++ b/pkgs/applications/science/logic/clprover/clprover.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Resolution-based theorem prover for Coalition Logic implemented in C++";
-    homepage = http://cgi.csc.liv.ac.uk/~ullrich/CLProver++/;
+    homepage = "http://cgi.csc.liv.ac.uk/~ullrich/CLProver++/";
     license = licenses.gpl3; # Note that while the website states that it is GPLv2 but the file in the zip as well as the comments in the source state it is GPLv3
     maintainers = with maintainers; [ mgttlinger ];
     platforms = [ "x86_64-linux" ];
diff --git a/pkgs/applications/science/logic/coq/default.nix b/pkgs/applications/science/logic/coq/default.nix
index 52a587ccb48bb..315900d42b9bf 100644
--- a/pkgs/applications/science/logic/coq/default.nix
+++ b/pkgs/applications/science/logic/coq/default.nix
@@ -161,7 +161,7 @@ self = stdenv.mkDerivation {
       together with an environment for semi-interactive development of
       machine-checked proofs.
     '';
-    homepage = http://coq.inria.fr;
+    homepage = "http://coq.inria.fr";
     license = licenses.lgpl21;
     branch = coq-version;
     maintainers = with maintainers; [ roconnor thoughtpolice vbgl Zimmi48 ];
diff --git a/pkgs/applications/science/logic/coq2html/default.nix b/pkgs/applications/science/logic/coq2html/default.nix
index bebf81b030d64..2e56eda893e92 100644
--- a/pkgs/applications/science/logic/coq2html/default.nix
+++ b/pkgs/applications/science/logic/coq2html/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
       initially hidden, but can be revealed one by one by clicking on the
       "Proof" keyword.
     '';
-    homepage = https://github.com/xavierleroy/coq2html;
+    homepage = "https://github.com/xavierleroy/coq2html";
     license = licenses.gpl2;
     maintainers = with maintainers; [ jwiegley ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/logic/cryptominisat/default.nix b/pkgs/applications/science/logic/cryptominisat/default.nix
index b4c4cb7c047d4..113c6307c40b1 100644
--- a/pkgs/applications/science/logic/cryptominisat/default.nix
+++ b/pkgs/applications/science/logic/cryptominisat/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "An advanced SAT Solver";
-    homepage    = https://github.com/msoos/cryptominisat;
+    homepage    = "https://github.com/msoos/cryptominisat";
     license     = licenses.mit;
     maintainers = with maintainers; [ mic92 ];
     platforms   = platforms.unix;
diff --git a/pkgs/applications/science/logic/cubicle/default.nix b/pkgs/applications/science/logic/cubicle/default.nix
index d198de41f9b79..bfb6a57fb33a6 100644
--- a/pkgs/applications/science/logic/cubicle/default.nix
+++ b/pkgs/applications/science/logic/cubicle/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "An open source model checker for verifying safety properties of array-based systems";
-    homepage = http://cubicle.lri.fr/;
+    homepage = "http://cubicle.lri.fr/";
     license = licenses.asl20;
     platforms = platforms.unix;
     maintainers = with maintainers; [ dwarfmaster ];
diff --git a/pkgs/applications/science/logic/cvc3/default.nix b/pkgs/applications/science/logic/cvc3/default.nix
index dfb04ad90e929..ff481fd7ab467 100644
--- a/pkgs/applications/science/logic/cvc3/default.nix
+++ b/pkgs/applications/science/logic/cvc3/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
       [ raskin ];
     platforms = platforms.linux;
     license = licenses.free;
-    homepage = http://www.cs.nyu.edu/acsys/cvc3/index.html;
+    homepage = "http://www.cs.nyu.edu/acsys/cvc3/index.html";
   };
   passthru = {
     updateInfo = {
diff --git a/pkgs/applications/science/logic/cvc4/default.nix b/pkgs/applications/science/logic/cvc4/default.nix
index c0c7a53ebd441..a6e9bc69a12c0 100644
--- a/pkgs/applications/science/logic/cvc4/default.nix
+++ b/pkgs/applications/science/logic/cvc4/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A high-performance theorem prover and SMT solver";
-    homepage    = http://cvc4.cs.stanford.edu/web/;
+    homepage    = "http://cvc4.cs.stanford.edu/web/";
     license     = licenses.gpl3;
     platforms   = platforms.unix;
     maintainers = with maintainers; [ vbgl thoughtpolice gebner ];
diff --git a/pkgs/applications/science/logic/drat-trim/default.nix b/pkgs/applications/science/logic/drat-trim/default.nix
index 4c4ea0f14ce1b..4099236e62800 100644
--- a/pkgs/applications/science/logic/drat-trim/default.nix
+++ b/pkgs/applications/science/logic/drat-trim/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation {
       competing SAT solvers' work when they claim that a SAT instance
       is unsatisfiable.
     '';
-    homepage = https://www.cs.utexas.edu/~marijn/drat-trim/;
+    homepage = "https://www.cs.utexas.edu/~marijn/drat-trim/";
     license = licenses.mit;
     maintainers = with maintainers; [ kini ];
     platforms = platforms.all;
diff --git a/pkgs/applications/science/logic/eprover/default.nix b/pkgs/applications/science/logic/eprover/default.nix
index 1b021f7160787..f19d7e35c3e35 100644
--- a/pkgs/applications/science/logic/eprover/default.nix
+++ b/pkgs/applications/science/logic/eprover/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Automated theorem prover for full first-order logic with equality";
-    homepage = http://www.eprover.org/;
+    homepage = "http://www.eprover.org/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ raskin gebner ];
     platforms = platforms.all;
diff --git a/pkgs/applications/science/logic/gappa/default.nix b/pkgs/applications/science/logic/gappa/default.nix
index 7522eb4790ed0..2ca1bcd309812 100644
--- a/pkgs/applications/science/logic/gappa/default.nix
+++ b/pkgs/applications/science/logic/gappa/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "gappa-1.3.5";
 
   src = fetchurl {
-    url = https://gforge.inria.fr/frs/download.php/file/38044/gappa-1.3.5.tar.gz;
+    url = "https://gforge.inria.fr/frs/download.php/file/38044/gappa-1.3.5.tar.gz";
     sha256 = "0q1wdiwqj6fsbifaayb1zkp20bz8a1my81sqjsail577jmzwi07w";
   };
 
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
   installPhase = "./remake install";
 
   meta = {
-    homepage = http://gappa.gforge.inria.fr/;
+    homepage = "http://gappa.gforge.inria.fr/";
     description = "Verifying and formally proving properties on numerical programs dealing with floating-point or fixed-point arithmetic";
     license = with stdenv.lib.licenses; [ cecill20 gpl2 ];
     maintainers = with stdenv.lib.maintainers; [ vbgl ];
diff --git a/pkgs/applications/science/logic/hol/default.nix b/pkgs/applications/science/logic/hol/default.nix
index d6a1eb6cbf717..dbafee7d6000a 100644
--- a/pkgs/applications/science/logic/hol/default.nix
+++ b/pkgs/applications/science/logic/hol/default.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation {
       implementing combinations of deduction, execution and property
       checking.
     '';
-    homepage = http://hol.sourceforge.net/;
+    homepage = "http://hol.sourceforge.net/";
     license = licenses.bsd3;
     maintainers = with maintainers; [ mudri ];
     platforms = with platforms; linux;
diff --git a/pkgs/applications/science/logic/hol_light/default.nix b/pkgs/applications/science/logic/hol_light/default.nix
index 69ffb87e76704..9c3030517e327 100644
--- a/pkgs/applications/science/logic/hol_light/default.nix
+++ b/pkgs/applications/science/logic/hol_light/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
   };
 
   patches = [(fetchpatch {
-    url = https://salsa.debian.org/ocaml-team/hol-light/-/raw/master/debian/patches/0004-Fix-compilation-with-camlp5-7.11.patch;
+    url = "https://salsa.debian.org/ocaml-team/hol-light/-/raw/master/debian/patches/0004-Fix-compilation-with-camlp5-7.11.patch";
     sha256 = "180qmxbrk3vb1ix7j77hcs8vsar91rs11s5mm8ir5352rz7ylicr";
   })];
 
@@ -47,7 +47,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Interactive theorem prover based on Higher-Order Logic";
-    homepage    = http://www.cl.cam.ac.uk/~jrh13/hol-light/;
+    homepage    = "http://www.cl.cam.ac.uk/~jrh13/hol-light/";
     license     = licenses.bsd2;
     platforms   = platforms.unix;
     maintainers = with maintainers; [ thoughtpolice maggesi vbgl ];
diff --git a/pkgs/applications/science/logic/iprover/default.nix b/pkgs/applications/science/logic/iprover/default.nix
index c4eb22a7c0306..310a95d7e7a60 100644
--- a/pkgs/applications/science/logic/iprover/default.nix
+++ b/pkgs/applications/science/logic/iprover/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "An automated first-order logic theorem prover";
-    homepage = http://www.cs.man.ac.uk/~korovink/iprover/;
+    homepage = "http://www.cs.man.ac.uk/~korovink/iprover/";
     maintainers = with maintainers; [ raskin gebner ];
     platforms = platforms.linux;
     license = licenses.gpl3;
diff --git a/pkgs/applications/science/logic/isabelle/default.nix b/pkgs/applications/science/logic/isabelle/default.nix
index 024f2f4e82943..d2e49d8178371 100644
--- a/pkgs/applications/science/logic/isabelle/default.nix
+++ b/pkgs/applications/science/logic/isabelle/default.nix
@@ -74,7 +74,7 @@ stdenv.mkDerivation rec {
       to be expressed in a formal language and provides tools for proving those
       formulas in a logical calculus.
     '';
-    homepage = http://isabelle.in.tum.de/;
+    homepage = "http://isabelle.in.tum.de/";
     license = "LGPL";
     maintainers = [ stdenv.lib.maintainers.jwiegley ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/logic/jonprl/default.nix b/pkgs/applications/science/logic/jonprl/default.nix
index e503836098f19..3ee05a478bc2e 100644
--- a/pkgs/applications/science/logic/jonprl/default.nix
+++ b/pkgs/applications/science/logic/jonprl/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
       based on Brouwer-realizability & meaning explanations.
       Inspired by Nuprl
     '';
-    homepage = https://github.com/jonsterling/JonPRL;
+    homepage = "https://github.com/jonsterling/JonPRL";
     license = stdenv.lib.licenses.mit;
     maintainers = with stdenv.lib.maintainers; [ puffnfresh ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/logic/leo2/default.nix b/pkgs/applications/science/logic/leo2/default.nix
index b50848a18205a..b43bfb8013582 100644
--- a/pkgs/applications/science/logic/leo2/default.nix
+++ b/pkgs/applications/science/logic/leo2/default.nix
@@ -32,6 +32,6 @@ stdenv.mkDerivation rec {
     maintainers = [ maintainers.raskin ];
     platforms = platforms.linux;
     license = licenses.bsd3;
-    homepage = http://www.leoprover.org/;
+    homepage = "http://www.leoprover.org/";
   };
 }
diff --git a/pkgs/applications/science/logic/lingeling/default.nix b/pkgs/applications/science/logic/lingeling/default.nix
index 94be89d4736ff..1805f6cdcc891 100644
--- a/pkgs/applications/science/logic/lingeling/default.nix
+++ b/pkgs/applications/science/logic/lingeling/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Fast SAT solver";
-    homepage    = http://fmv.jku.at/lingeling/;
+    homepage    = "http://fmv.jku.at/lingeling/";
     license     = licenses.mit;
     platforms   = platforms.unix;
     maintainers = with maintainers; [ thoughtpolice ];
diff --git a/pkgs/applications/science/logic/logisim/default.nix b/pkgs/applications/science/logic/logisim/default.nix
index d6a1207b5d609..ce86b25231166 100644
--- a/pkgs/applications/science/logic/logisim/default.nix
+++ b/pkgs/applications/science/logic/logisim/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
   '';
   
   meta = {
-    homepage = http://ozark.hendrix.edu/~burch/logisim;
+    homepage = "http://ozark.hendrix.edu/~burch/logisim";
     description = "Educational tool for designing and simulating digital logic circuits";
     license = stdenv.lib.licenses.gpl2Plus;
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/applications/science/logic/mcrl2/default.nix b/pkgs/applications/science/logic/mcrl2/default.nix
index a479e31e33955..eb83eaf79c55d 100644
--- a/pkgs/applications/science/logic/mcrl2/default.nix
+++ b/pkgs/applications/science/logic/mcrl2/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
       that can be used for modelling, validation and verification of
       concurrent systems and protocols
     '';
-    homepage = https://www.mcrl2.org/;
+    homepage = "https://www.mcrl2.org/";
     license = licenses.boost;
     maintainers = with maintainers; [ moretea ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/logic/metis-prover/default.nix b/pkgs/applications/science/logic/metis-prover/default.nix
index ed1218c401b32..5755abfd90788 100644
--- a/pkgs/applications/science/logic/metis-prover/default.nix
+++ b/pkgs/applications/science/logic/metis-prover/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Automatic theorem prover for first-order logic with equality";
-    homepage = http://www.gilith.com/research/metis/;
+    homepage = "http://www.gilith.com/research/metis/";
     license = licenses.mit;
     maintainers = with maintainers; [ gebner ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/logic/minisat/default.nix b/pkgs/applications/science/logic/minisat/default.nix
index 6b642832b83fd..df1800e6c31b0 100644
--- a/pkgs/applications/science/logic/minisat/default.nix
+++ b/pkgs/applications/science/logic/minisat/default.nix
@@ -19,6 +19,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ gebner raskin ];
     platforms = platforms.unix;
     license = licenses.mit;
-    homepage = http://minisat.se/;
+    homepage = "http://minisat.se/";
   };
 }
diff --git a/pkgs/applications/science/logic/monosat/default.nix b/pkgs/applications/science/logic/monosat/default.nix
index ba0e787af7216..63440213920ce 100644
--- a/pkgs/applications/science/logic/monosat/default.nix
+++ b/pkgs/applications/science/logic/monosat/default.nix
@@ -23,7 +23,7 @@ let
   patches = [
     # Python 3.8 compatibility
     (fetchpatch {
-      url = https://github.com/sambayless/monosat/commit/a5079711d0df0451f9840f3a41248e56dbb03967.patch;
+      url = "https://github.com/sambayless/monosat/commit/a5079711d0df0451f9840f3a41248e56dbb03967.patch";
       sha256 = "1p2y0jw8hb9c90nbffhn86k1dxd6f6hk5v70dfmpzka3y6g1ksal";
     })
   ];
@@ -50,7 +50,7 @@ let
       description = "SMT solver for Monotonic Theories";
       platforms   = platforms.unix;
       license     = if includeGplCode then licenses.gpl2 else licenses.mit;
-      homepage    = https://github.com/sambayless/monosat;
+      homepage    = "https://github.com/sambayless/monosat";
       maintainers = [ maintainers.acairncross ];
     };
   };
diff --git a/pkgs/applications/science/logic/open-wbo/default.nix b/pkgs/applications/science/logic/open-wbo/default.nix
index 32ce9fde0c312..c314127e74bfe 100644
--- a/pkgs/applications/science/logic/open-wbo/default.nix
+++ b/pkgs/applications/science/logic/open-wbo/default.nix
@@ -22,6 +22,6 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ gebner ];
     platforms = platforms.unix;
     license = licenses.mit;
-    homepage = http://sat.inesc-id.pt/open-wbo/;
+    homepage = "http://sat.inesc-id.pt/open-wbo/";
   };
 }
diff --git a/pkgs/applications/science/logic/opensmt/default.nix b/pkgs/applications/science/logic/opensmt/default.nix
index 9e5ebe008b8f3..03b3ce4ff0b77 100644
--- a/pkgs/applications/science/logic/opensmt/default.nix
+++ b/pkgs/applications/science/logic/opensmt/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     maintainers = [ maintainers.raskin ];
     platforms = platforms.linux;
     license = licenses.gpl3;
-    homepage = http://code.google.com/p/opensmt/;
+    homepage = "http://code.google.com/p/opensmt/";
     broken = true;
     downloadPage = "http://code.google.com/p/opensmt/downloads/list";
   };
diff --git a/pkgs/applications/science/logic/ott/default.nix b/pkgs/applications/science/logic/ott/default.nix
index fa7c3dd5e95f2..fa2ad9c4abc42 100644
--- a/pkgs/applications/science/logic/ott/default.nix
+++ b/pkgs/applications/science/logic/ott/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
       terms of the defined language, parsing them and replacing them by
       target-system terms.
     '';
-    homepage = http://www.cl.cam.ac.uk/~pes20/ott;
+    homepage = "http://www.cl.cam.ac.uk/~pes20/ott";
     license = stdenv.lib.licenses.bsd3;
     maintainers = with stdenv.lib.maintainers; [ jwiegley ];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/applications/science/logic/picosat/default.nix b/pkgs/applications/science/logic/picosat/default.nix
index 547bd31e8b429..b13d871580c56 100644
--- a/pkgs/applications/science/logic/picosat/default.nix
+++ b/pkgs/applications/science/logic/picosat/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "SAT solver with proof and core support";
-    homepage    = http://fmv.jku.at/picosat/;
+    homepage    = "http://fmv.jku.at/picosat/";
     license     = stdenv.lib.licenses.mit;
     platforms   = stdenv.lib.platforms.unix;
     maintainers = with stdenv.lib.maintainers; [ roconnor thoughtpolice ];
diff --git a/pkgs/applications/science/logic/prooftree/default.nix b/pkgs/applications/science/logic/prooftree/default.nix
index d4feb5c9e2855..98313e48cb271 100644
--- a/pkgs/applications/science/logic/prooftree/default.nix
+++ b/pkgs/applications/science/logic/prooftree/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
       below the tree (on single click) or in a separate window (on double or
       shift-click).
     '';
-    homepage = http://askra.de/software/prooftree;
+    homepage = "http://askra.de/software/prooftree";
     platforms = platforms.unix;
     maintainers = [ maintainers.jwiegley ];
     license = licenses.gpl3;
diff --git a/pkgs/applications/science/logic/prover9/default.nix b/pkgs/applications/science/logic/prover9/default.nix
index 9528a5942a43b..fcdff8558483a 100644
--- a/pkgs/applications/science/logic/prover9/default.nix
+++ b/pkgs/applications/science/logic/prover9/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "prover9-2009-11a";
 
   src = fetchurl {
-    url = https://www.cs.unm.edu/~mccune/mace4/download/LADR-2009-11A.tar.gz;
+    url = "https://www.cs.unm.edu/~mccune/mace4/download/LADR-2009-11A.tar.gz";
     sha256 = "1l2i3d3h5z7nnbzilb6z92r0rbx0kh6yaxn2c5qhn3000xcfsay3";
   };
 
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    homepage = https://www.cs.unm.edu/~mccune/mace4/;
+    homepage = "https://www.cs.unm.edu/~mccune/mace4/";
     license = "GPL";
     description = "Automated theorem prover for first-order and equational logic";
     longDescription = ''
diff --git a/pkgs/applications/science/logic/redprl/default.nix b/pkgs/applications/science/logic/redprl/default.nix
index 9da2647d11384..49245c73f2c4f 100644
--- a/pkgs/applications/science/logic/redprl/default.nix
+++ b/pkgs/applications/science/logic/redprl/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
   '';
   meta = {
     description = "A proof assistant for Nominal Computational Type Theory";
-    homepage = http://www.redprl.org/;
+    homepage = "http://www.redprl.org/";
     license = stdenv.lib.licenses.mit;
     maintainers = [ stdenv.lib.maintainers.acowley ];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/applications/science/logic/sad/default.nix b/pkgs/applications/science/logic/sad/default.nix
index 8e94356f376a0..f9b82b5d733bd 100644
--- a/pkgs/applications/science/logic/sad/default.nix
+++ b/pkgs/applications/science/logic/sad/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation {
       '';
     license = stdenv.lib.licenses.gpl3Plus;
     maintainers = [ stdenv.lib.maintainers.schmitthenner ];
-    homepage = http://nevidal.org/sad.en.html;
+    homepage = "http://nevidal.org/sad.en.html";
     platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/applications/science/logic/satallax/default.nix b/pkgs/applications/science/logic/satallax/default.nix
index d3ceeadbf9a7b..6c2b03b5b37d5 100644
--- a/pkgs/applications/science/logic/satallax/default.nix
+++ b/pkgs/applications/science/logic/satallax/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
     maintainers = [stdenv.lib.maintainers.raskin];
     platforms = stdenv.lib.platforms.linux;
     downloadPage = "http://www.ps.uni-saarland.de/~cebrown/satallax/downloads.php";
-    homepage = http://www.ps.uni-saarland.de/~cebrown/satallax/index.php;
+    homepage = "http://www.ps.uni-saarland.de/~cebrown/satallax/index.php";
     updateWalker = true;
   };
 }
diff --git a/pkgs/applications/science/logic/tamarin-prover/default.nix b/pkgs/applications/science/logic/tamarin-prover/default.nix
index 9b87b8c899e52..857aba5a26076 100644
--- a/pkgs/applications/science/logic/tamarin-prover/default.nix
+++ b/pkgs/applications/science/logic/tamarin-prover/default.nix
@@ -18,7 +18,7 @@ let
     inherit pname version src;
 
     license     = lib.licenses.gpl3;
-    homepage    = https://tamarin-prover.github.io;
+    homepage    = "https://tamarin-prover.github.io";
     description = "Security protocol verification in the symbolic model";
     maintainers = [ lib.maintainers.thoughtpolice ];
   };
diff --git a/pkgs/applications/science/logic/tlaplus/default.nix b/pkgs/applications/science/logic/tlaplus/default.nix
index b1c72d7c5ee75..3476b5ea9d90c 100644
--- a/pkgs/applications/science/logic/tlaplus/default.nix
+++ b/pkgs/applications/science/logic/tlaplus/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "An algorithm specification language with model checking tools";
-    homepage    = http://lamport.azurewebsites.net/tla/tla.html;
+    homepage    = "http://lamport.azurewebsites.net/tla/tla.html";
     license     = stdenv.lib.licenses.mit;
     platforms   = stdenv.lib.platforms.unix;
     maintainers = [ stdenv.lib.maintainers.thoughtpolice ];
diff --git a/pkgs/applications/science/logic/tlaplus/tlaps.nix b/pkgs/applications/science/logic/tlaplus/tlaps.nix
index 7c8389688d95d..cbca37ea53d16 100644
--- a/pkgs/applications/science/logic/tlaplus/tlaps.nix
+++ b/pkgs/applications/science/logic/tlaplus/tlaps.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
       and scalable to large system specifications. It provides a
       consistent abstraction over the various “backend” verifiers.
     '';
-    homepage    = https://tla.msr-inria.inria.fr/tlaps/content/Home.html;
+    homepage    = "https://tla.msr-inria.inria.fr/tlaps/content/Home.html";
     license     = stdenv.lib.licenses.bsd2;
     platforms   = stdenv.lib.platforms.unix;
     maintainers = [ stdenv.lib.maintainers.badi ];
diff --git a/pkgs/applications/science/logic/tlaplus/toolbox.nix b/pkgs/applications/science/logic/tlaplus/toolbox.nix
index 91666e85d9235..f326d62f8f0b4 100644
--- a/pkgs/applications/science/logic/tlaplus/toolbox.nix
+++ b/pkgs/applications/science/logic/tlaplus/toolbox.nix
@@ -66,7 +66,7 @@ in stdenv.mkDerivation {
   '';
 
   meta = {
-    homepage = http://research.microsoft.com/en-us/um/people/lamport/tla/toolbox.html;
+    homepage = "http://research.microsoft.com/en-us/um/people/lamport/tla/toolbox.html";
     description = "IDE for the TLA+ tools";
     longDescription = ''
       Integrated development environment for the TLA+ tools, based on Eclipse. You can use it
diff --git a/pkgs/applications/science/logic/twelf/default.nix b/pkgs/applications/science/logic/twelf/default.nix
index 161da6e4b2357..975b989bd94cb 100644
--- a/pkgs/applications/science/logic/twelf/default.nix
+++ b/pkgs/applications/science/logic/twelf/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
       a foundational proof-carrying-code system, and a type safety proof for
       Standard ML.
     '';
-    homepage = http://twelf.org/wiki/Main_Page;
+    homepage = "http://twelf.org/wiki/Main_Page";
     license = stdenv.lib.licenses.mit;
     maintainers = with stdenv.lib.maintainers; [ jwiegley ];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/applications/science/logic/vampire/default.nix b/pkgs/applications/science/logic/vampire/default.nix
index 42963fe5f9c6f..e5941a35fd596 100644
--- a/pkgs/applications/science/logic/vampire/default.nix
+++ b/pkgs/applications/science/logic/vampire/default.nix
@@ -19,19 +19,19 @@ stdenv.mkDerivation rec {
     # https://github.com/vprover/vampire/pull/54
     (fetchpatch {
       name = "fix-apple-cygwin-defines.patch";
-      url = https://github.com/vprover/vampire/pull/54.patch;
+      url = "https://github.com/vprover/vampire/pull/54.patch";
       sha256 = "0i6nrc50wlg1dqxq38lkpx4rmfb3lf7s8f95l4jkvqp0nxa20cza";
     })
     # https://github.com/vprover/vampire/pull/55
     (fetchpatch {
       name = "fix-wait-any.patch";
-      url = https://github.com/vprover/vampire/pull/55.patch;
+      url = "https://github.com/vprover/vampire/pull/55.patch";
       sha256 = "1pwfpwpl23bqsgkmmvw6bnniyvp5j9v8l3z9s9pllfabnfcrcz9l";
     })
     # https://github.com/vprover/vampire/pull/56
     (fetchpatch {
       name = "fenv.patch";
-      url = https://github.com/vprover/vampire/pull/56.patch;
+      url = "https://github.com/vprover/vampire/pull/56.patch";
       sha256 = "0xl3jcyqmk146mg3qj5hdd0pbja6wbq3250zmfhbxqrjh40mm40g";
     })
   ];
diff --git a/pkgs/applications/science/logic/verit/default.nix b/pkgs/applications/science/logic/verit/default.nix
index 2c68191b800e4..f20a832415714 100644
--- a/pkgs/applications/science/logic/verit/default.nix
+++ b/pkgs/applications/science/logic/verit/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "An open, trustable and efficient SMT-solver";
-    homepage = http://www.verit-solver.org/;
+    homepage = "http://www.verit-solver.org/";
     license = licenses.bsd3;
     platforms = platforms.unix;
     maintainers = [ maintainers.gebner ];
diff --git a/pkgs/applications/science/logic/why3/default.nix b/pkgs/applications/science/logic/why3/default.nix
index e576446181962..51cb2a456c197 100644
--- a/pkgs/applications/science/logic/why3/default.nix
+++ b/pkgs/applications/science/logic/why3/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   version = "1.2.1";
 
   src = fetchurl {
-    url = https://gforge.inria.fr/frs/download.php/file/38185/why3-1.2.1.tar.gz;
+    url = "https://gforge.inria.fr/frs/download.php/file/38185/why3-1.2.1.tar.gz";
     sha256 = "014gkwisjp05x3342zxkryb729p02ngx1hcjjsrplpa53jzgz647";
   };
 
diff --git a/pkgs/applications/science/machine-learning/fasttext/default.nix b/pkgs/applications/science/machine-learning/fasttext/default.nix
index 0de54572862b2..2ae5e0eeddcd9 100644
--- a/pkgs/applications/science/machine-learning/fasttext/default.nix
+++ b/pkgs/applications/science/machine-learning/fasttext/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Library for text classification and representation learning";
-    homepage = https://fasttext.cc/;
+    homepage = "https://fasttext.cc/";
     license = licenses.mit;
     platforms = platforms.unix;
     maintainers = [ maintainers.danieldk ];
diff --git a/pkgs/applications/science/machine-learning/labelimg/default.nix b/pkgs/applications/science/machine-learning/labelimg/default.nix
index b1c89d299508e..a952fb559ce6a 100644
--- a/pkgs/applications/science/machine-learning/labelimg/default.nix
+++ b/pkgs/applications/science/machine-learning/labelimg/default.nix
@@ -18,7 +18,7 @@
     '';
     meta = with stdenv.lib; {
       description = "LabelImg is a graphical image annotation tool and label object bounding boxes in images";
-      homepage = https://github.com/tzutalin/labelImg;
+      homepage = "https://github.com/tzutalin/labelImg";
       license = licenses.mit;
       platforms = platforms.linux;
       maintainers = [ maintainers.cmcdragonkai ];
diff --git a/pkgs/applications/science/machine-learning/streamlit/default.nix b/pkgs/applications/science/machine-learning/streamlit/default.nix
index c7bdf0f12a404..3856b8ec841ac 100644
--- a/pkgs/applications/science/machine-learning/streamlit/default.nix
+++ b/pkgs/applications/science/machine-learning/streamlit/default.nix
@@ -25,7 +25,7 @@ buildPythonApplication rec {
   '';
 
   meta = with lib; {
-    homepage = https://streamlit.io/;
+    homepage = "https://streamlit.io/";
     description = "The fastest way to build custom ML tools";
     maintainers = with maintainers; [ yrashk ];
     license = licenses.asl20;
diff --git a/pkgs/applications/science/math/LiE/default.nix b/pkgs/applications/science/math/LiE/default.nix
index d59ec57c1a859..f5f3bb0a42b18 100644
--- a/pkgs/applications/science/math/LiE/default.nix
+++ b/pkgs/applications/science/math/LiE/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "A Computer algebra package for Lie group computations";
-    homepage = http://wwwmathlabo.univ-poitiers.fr/~maavl/LiE/;
+    homepage = "http://wwwmathlabo.univ-poitiers.fr/~maavl/LiE/";
     license = stdenv.lib.licenses.lgpl3; # see the website
 
     longDescription = ''
diff --git a/pkgs/applications/science/math/almonds/default.nix b/pkgs/applications/science/math/almonds/default.nix
index b5d9632c551d0..9edb0747b31e4 100644
--- a/pkgs/applications/science/math/almonds/default.nix
+++ b/pkgs/applications/science/math/almonds/default.nix
@@ -19,7 +19,7 @@ with python3.pkgs; buildPythonApplication rec {
 
   meta = with stdenv.lib; {
     description = "Terminal Mandelbrot fractal viewer";
-    homepage = https://github.com/Tenchi2xh/Almonds;
+    homepage = "https://github.com/Tenchi2xh/Almonds";
     license = licenses.mit;
     maintainers = with maintainers; [ infinisil ];
   };
diff --git a/pkgs/applications/science/math/bcal/default.nix b/pkgs/applications/science/math/bcal/default.nix
index 74adcab4e7059..18b6e051b3f26 100644
--- a/pkgs/applications/science/math/bcal/default.nix
+++ b/pkgs/applications/science/math/bcal/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Storage conversion and expression calculator";
-    homepage = https://github.com/jarun/bcal;
+    homepage = "https://github.com/jarun/bcal";
     license = licenses.gpl3;
     platforms = [ "aarch64-linux" "x86_64-darwin" "x86_64-linux" ];
     maintainers = with maintainers; [ jfrankenau ];
diff --git a/pkgs/applications/science/math/bliss/default.nix b/pkgs/applications/science/math/bliss/default.nix
index 37504fceb1416..361b088466265 100644
--- a/pkgs/applications/science/math/bliss/default.nix
+++ b/pkgs/applications/science/math/bliss/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "bliss is an open source tool for computing automorphism groups and canonical forms of graphs. It has both a command line user interface as well as C++ and C programming language APIs.";
-    homepage = http://www.tcs.hut.fi/Software/bliss/;
+    homepage = "http://www.tcs.hut.fi/Software/bliss/";
     license = licenses.lgpl3;
     platforms = [ "i686-linux" "x86_64-linux" ];
   };
diff --git a/pkgs/applications/science/math/caffe/default.nix b/pkgs/applications/science/math/caffe/default.nix
index 5068abbf30767..ea87c4953eebb 100644
--- a/pkgs/applications/science/math/caffe/default.nix
+++ b/pkgs/applications/science/math/caffe/default.nix
@@ -134,7 +134,7 @@ stdenv.mkDerivation rec {
       modularity in mind. It is developed by the Berkeley Vision and Learning
       Center (BVLC) and by community contributors.
     '';
-    homepage = http://caffe.berkeleyvision.org/;
+    homepage = "http://caffe.berkeleyvision.org/";
     maintainers = with maintainers; [ jb55 ];
     license = licenses.bsd2;
     platforms = platforms.linux ++ platforms.darwin;
diff --git a/pkgs/applications/science/math/calc/default.nix b/pkgs/applications/science/math/calc/default.nix
index 0d149eca3b631..8e50f48b286b4 100644
--- a/pkgs/applications/science/math/calc/default.nix
+++ b/pkgs/applications/science/math/calc/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "C-style arbitrary precision calculator";
-    homepage = http://www.isthe.com/chongo/tech/comp/calc/;
+    homepage = "http://www.isthe.com/chongo/tech/comp/calc/";
     license = licenses.lgpl21;
     maintainers = with maintainers; [ matthewbauer ];
     platforms = platforms.all;
diff --git a/pkgs/applications/science/math/cbc/default.nix b/pkgs/applications/science/math/cbc/default.nix
index e68ceb379b049..b75f3d3f78688 100644
--- a/pkgs/applications/science/math/cbc/default.nix
+++ b/pkgs/applications/science/math/cbc/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   # FIXME: move share/coin/Data to a separate output?
 
   meta = {
-    homepage = https://projects.coin-or.org/Cbc;
+    homepage = "https://projects.coin-or.org/Cbc";
     license = lib.licenses.epl10;
     maintainers = [ lib.maintainers.eelco ];
     platforms = lib.platforms.linux ++ lib.platforms.darwin;
diff --git a/pkgs/applications/science/math/cntk/default.nix b/pkgs/applications/science/math/cntk/default.nix
index ceb87b25ba85c..e2db40a402e0c 100644
--- a/pkgs/applications/science/math/cntk/default.nix
+++ b/pkgs/applications/science/math/cntk/default.nix
@@ -95,7 +95,7 @@ in stdenv.mkDerivation rec {
     # Newer cub is included with cudatoolkit now and it breaks the build.
     # https://github.com/Microsoft/CNTK/issues/3191
     broken = cudaSupport;
-    homepage = https://github.com/Microsoft/CNTK;
+    homepage = "https://github.com/Microsoft/CNTK";
     description = "An open source deep-learning toolkit";
     license = if onebitSGDSupport then licenses.unfreeRedistributable else licenses.mit;
     platforms = [ "x86_64-linux" ];
diff --git a/pkgs/applications/science/math/csdp/default.nix b/pkgs/applications/science/math/csdp/default.nix
index 9b402fe0ac941..eef60829f8e08 100644
--- a/pkgs/applications/science/math/csdp/default.nix
+++ b/pkgs/applications/science/math/csdp/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    homepage = https://projects.coin-or.org/Csdp;
+    homepage = "https://projects.coin-or.org/Csdp";
     license = lib.licenses.cpl10;
     maintainers = [ lib.maintainers.roconnor ];
     description = "A C Library for Semidefinite Programming";
diff --git a/pkgs/applications/science/math/ecm/default.nix b/pkgs/applications/science/math/ecm/default.nix
index 7b768f7077e70..3e8e5879950b2 100644
--- a/pkgs/applications/science/math/ecm/default.nix
+++ b/pkgs/applications/science/math/ecm/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation {
   meta = {
     description = "Elliptic Curve Method for Integer Factorization";
     license = stdenv.lib.licenses.gpl2Plus;
-    homepage = http://ecm.gforge.inria.fr/;
+    homepage = "http://ecm.gforge.inria.fr/";
     maintainers = [ stdenv.lib.maintainers.roconnor ];
     platforms = with stdenv.lib.platforms; linux ++ darwin;
   };
diff --git a/pkgs/applications/science/math/eukleides/default.nix b/pkgs/applications/science/math/eukleides/default.nix
index 6d1c778d1e0ee..879ad96a93675 100644
--- a/pkgs/applications/science/math/eukleides/default.nix
+++ b/pkgs/applications/science/math/eukleides/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Geometry Drawing Language";
-    homepage = http://www.eukleides.org/;
+    homepage = "http://www.eukleides.org/";
     license = stdenv.lib.licenses.gpl2;
 
     longDescription = ''
diff --git a/pkgs/applications/science/math/form/default.nix b/pkgs/applications/science/math/form/default.nix
index 0dbafebf2c06a..091372792901c 100644
--- a/pkgs/applications/science/math/form/default.nix
+++ b/pkgs/applications/science/math/form/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "The FORM project for symbolic manipulation of very big expressions";
-    homepage = https://www.nikhef.nl/~form/;
+    homepage = "https://www.nikhef.nl/~form/";
     license = licenses.gpl3;
     maintainers = [ maintainers.veprbl ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/math/fricas/default.nix b/pkgs/applications/science/math/fricas/default.nix
index 7d1f738641a6d..39ca53c47e6e6 100644
--- a/pkgs/applications/science/math/fricas/default.nix
+++ b/pkgs/applications/science/math/fricas/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
   dontStrip = true;
 
   meta = {
-    homepage = http://fricas.sourceforge.net/;
+    homepage = "http://fricas.sourceforge.net/";
     description = "An advanced computer algebra system";
     license = stdenv.lib.licenses.bsd3;
 
diff --git a/pkgs/applications/science/math/gap/default.nix b/pkgs/applications/science/math/gap/default.nix
index 7eb10d1f95250..87f4fa1203875 100644
--- a/pkgs/applications/science/math/gap/default.nix
+++ b/pkgs/applications/science/math/gap/default.nix
@@ -175,6 +175,6 @@ stdenv.mkDerivation rec {
     # is reasonable and that way the binary cache doesn't get overloaded.
     hydraPlatforms = lib.optionals (!keepAllPackages) meta.platforms;
     license = licenses.gpl2;
-    homepage = http://gap-system.org/;
+    homepage = "http://gap-system.org/";
   };
 }
diff --git a/pkgs/applications/science/math/geogebra/default.nix b/pkgs/applications/science/math/geogebra/default.nix
index bba26610a079a..1dd92267a837f 100644
--- a/pkgs/applications/science/math/geogebra/default.nix
+++ b/pkgs/applications/science/math/geogebra/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
       together geometry, algebra, spreadsheets, graphing, statistics and
       calculus in one easy-to-use package.
     '';
-    homepage = https://www.geogebra.org/;
+    homepage = "https://www.geogebra.org/";
     maintainers = with maintainers; [ ma27 ];
     license = with licenses; [ gpl3 cc-by-nc-sa-30 geogebra ];
     platforms = platforms.all;
diff --git a/pkgs/applications/science/math/gfan/default.nix b/pkgs/applications/science/math/gfan/default.nix
index 33b003b2b5625..72d1a548c530c 100644
--- a/pkgs/applications/science/math/gfan/default.nix
+++ b/pkgs/applications/science/math/gfan/default.nix
@@ -22,6 +22,6 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.gpl2 ;
     maintainers = [stdenv.lib.maintainers.raskin];
     platforms = stdenv.lib.platforms.unix;
-    homepage = http://home.math.au.dk/jensen/software/gfan/gfan.html;
+    homepage = "http://home.math.au.dk/jensen/software/gfan/gfan.html";
   };
 }
diff --git a/pkgs/applications/science/math/ginac/default.nix b/pkgs/applications/science/math/ginac/default.nix
index 79f20f06b2955..1e4fd6288ce32 100644
--- a/pkgs/applications/science/math/ginac/default.nix
+++ b/pkgs/applications/science/math/ginac/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "GiNaC is Not a CAS";
-    homepage    = http://www.ginac.de/;
+    homepage    = "http://www.ginac.de/";
     maintainers = with maintainers; [ lovek323 ];
     license = licenses.gpl2;
     platforms   = platforms.all;
diff --git a/pkgs/applications/science/math/glsurf/default.nix b/pkgs/applications/science/math/glsurf/default.nix
index c11110e4bc499..09d0d5241687f 100644
--- a/pkgs/applications/science/math/glsurf/default.nix
+++ b/pkgs/applications/science/math/glsurf/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    homepage = https://raffalli.eu/~christophe/glsurf/;
+    homepage = "https://raffalli.eu/~christophe/glsurf/";
     description = "A program to draw implicit surfaces and curves";
     license = stdenv.lib.licenses.lgpl21;
   };
diff --git a/pkgs/applications/science/math/gurobi/default.nix b/pkgs/applications/science/math/gurobi/default.nix
index 4ac7c411c2dc2..1aa7bce07c5dc 100644
--- a/pkgs/applications/science/math/gurobi/default.nix
+++ b/pkgs/applications/science/math/gurobi/default.nix
@@ -50,7 +50,7 @@ in stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Optimization solver for mathematical programming";
-    homepage = https://www.gurobi.com;
+    homepage = "https://www.gurobi.com";
     license = licenses.unfree;
     platforms = [ "x86_64-linux" ];
     maintainers = with maintainers; [ jfrankenau ];
diff --git a/pkgs/applications/science/math/hmetis/default.nix b/pkgs/applications/science/math/hmetis/default.nix
index 45a13d0288949..b5e99a8dd75be 100644
--- a/pkgs/applications/science/math/hmetis/default.nix
+++ b/pkgs/applications/science/math/hmetis/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "hMETIS is a set of programs for partitioning hypergraphs";
-    homepage = http://glaros.dtc.umn.edu/gkhome/metis/hmetis/overview;
+    homepage = "http://glaros.dtc.umn.edu/gkhome/metis/hmetis/overview";
     license = licenses.unfree;
     platforms = [ "i686-linux" "x86_64-linux" ];
   };
diff --git a/pkgs/applications/science/math/jags/default.nix b/pkgs/applications/science/math/jags/default.nix
index 1d1fb96a47393..5ac1594e19aaf 100644
--- a/pkgs/applications/science/math/jags/default.nix
+++ b/pkgs/applications/science/math/jags/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Just Another Gibbs Sampler";
     license     = licenses.gpl2;
-    homepage    = http://mcmc-jags.sourceforge.net;
+    homepage    = "http://mcmc-jags.sourceforge.net";
     maintainers = [ maintainers.andres ];
     platforms = platforms.unix;
   };
diff --git a/pkgs/applications/science/math/lrcalc/default.nix b/pkgs/applications/science/math/lrcalc/default.nix
index f407358d8f266..438a84c0e0be9 100644
--- a/pkgs/applications/science/math/lrcalc/default.nix
+++ b/pkgs/applications/science/math/lrcalc/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Littlewood-Richardson calculator";
-    homepage = http://math.rutgers.edu/~asbuch/lrcalc/;
+    homepage = "http://math.rutgers.edu/~asbuch/lrcalc/";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ timokau ];
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/math/mathematica/10.nix b/pkgs/applications/science/math/mathematica/10.nix
index 4204b1399137e..c7da7b16da8f9 100644
--- a/pkgs/applications/science/math/mathematica/10.nix
+++ b/pkgs/applications/science/math/mathematica/10.nix
@@ -130,7 +130,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Wolfram Mathematica computational software system";
-    homepage = http://www.wolfram.com/mathematica/;
+    homepage = "http://www.wolfram.com/mathematica/";
     license = stdenv.lib.licenses.unfree;
   };
 }
diff --git a/pkgs/applications/science/math/mathematica/11.nix b/pkgs/applications/science/math/mathematica/11.nix
index 521cb70099b9f..898d6a4863515 100644
--- a/pkgs/applications/science/math/mathematica/11.nix
+++ b/pkgs/applications/science/math/mathematica/11.nix
@@ -144,7 +144,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Wolfram Mathematica computational software system";
-    homepage = http://www.wolfram.com/mathematica/;
+    homepage = "http://www.wolfram.com/mathematica/";
     license = stdenv.lib.licenses.unfree;
   };
 }
diff --git a/pkgs/applications/science/math/mathematica/9.nix b/pkgs/applications/science/math/mathematica/9.nix
index aaa1c02ec0a0a..617ac86571329 100644
--- a/pkgs/applications/science/math/mathematica/9.nix
+++ b/pkgs/applications/science/math/mathematica/9.nix
@@ -116,7 +116,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Wolfram Mathematica computational software system";
-    homepage = http://www.wolfram.com/mathematica/;
+    homepage = "http://www.wolfram.com/mathematica/";
     license = stdenv.lib.licenses.unfree;
   };
 }
diff --git a/pkgs/applications/science/math/mathematica/default.nix b/pkgs/applications/science/math/mathematica/default.nix
index 5553bb0505fac..7831640b12445 100644
--- a/pkgs/applications/science/math/mathematica/default.nix
+++ b/pkgs/applications/science/math/mathematica/default.nix
@@ -148,7 +148,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Wolfram Mathematica computational software system";
-    homepage = http://www.wolfram.com/mathematica/;
+    homepage = "http://www.wolfram.com/mathematica/";
     license = licenses.unfree;
     maintainers = with maintainers; [ herberteuler ];
     platforms = [ "x86_64-linux" ];
diff --git a/pkgs/applications/science/math/maxima/5.41.nix b/pkgs/applications/science/math/maxima/5.41.nix
index 583391d08ddeb..829dffc6116ec 100644
--- a/pkgs/applications/science/math/maxima/5.41.nix
+++ b/pkgs/applications/science/math/maxima/5.41.nix
@@ -86,7 +86,7 @@ stdenv.mkDerivation ({
 
   meta = {
     description = "Computer algebra system";
-    homepage = http://maxima.sourceforge.net;
+    homepage = "http://maxima.sourceforge.net";
     license = stdenv.lib.licenses.gpl2;
 
     longDescription = ''
diff --git a/pkgs/applications/science/math/maxima/default.nix b/pkgs/applications/science/math/maxima/default.nix
index 5843f38a74a88..49ff0d5d5a050 100644
--- a/pkgs/applications/science/math/maxima/default.nix
+++ b/pkgs/applications/science/math/maxima/default.nix
@@ -88,7 +88,7 @@ stdenv.mkDerivation ({
 
   meta = {
     description = "Computer algebra system";
-    homepage = http://maxima.sourceforge.net;
+    homepage = "http://maxima.sourceforge.net";
     license = stdenv.lib.licenses.gpl2;
 
     longDescription = ''
diff --git a/pkgs/applications/science/math/msieve/default.nix b/pkgs/applications/science/math/msieve/default.nix
index 643d990feb8db..db7a1c1490680 100644
--- a/pkgs/applications/science/math/msieve/default.nix
+++ b/pkgs/applications/science/math/msieve/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "msieve-1.53";
 
   src = fetchurl {
-    url = mirror://sourceforge/msieve/msieve/Msieve%20v1.53/msieve153_src.tar.gz;
+    url = "mirror://sourceforge/msieve/msieve/Msieve%20v1.53/msieve153_src.tar.gz";
     sha256 = "1d1vv7j4rh3nnxsmvafi73qy7lw7n3akjlm5pjl3m936yapvmz65";
   };
 
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
   meta = {
     description = "A C library implementing a suite of algorithms to factor large integers";
     license = stdenv.lib.licenses.publicDomain;
-    homepage = http://msieve.sourceforge.net/;
+    homepage = "http://msieve.sourceforge.net/";
     maintainers = [ stdenv.lib.maintainers.roconnor ];
     platforms = [ "x86_64-linux" ] ++ stdenv.lib.platforms.darwin;
   };
diff --git a/pkgs/applications/science/math/mxnet/default.nix b/pkgs/applications/science/math/mxnet/default.nix
index bd4725ce73c62..5b7688f605194 100644
--- a/pkgs/applications/science/math/mxnet/default.nix
+++ b/pkgs/applications/science/math/mxnet/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Lightweight, Portable, Flexible Distributed/Mobile Deep Learning with Dynamic, Mutation-aware Dataflow Dep Scheduler";
-    homepage = https://mxnet.incubator.apache.org/;
+    homepage = "https://mxnet.incubator.apache.org/";
     maintainers = with maintainers; [ abbradar ];
     license = licenses.asl20;
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/math/nasc/default.nix b/pkgs/applications/science/math/nasc/default.nix
index a492178595681..3fbcfecab06e6 100644
--- a/pkgs/applications/science/math/nasc/default.nix
+++ b/pkgs/applications/science/math/nasc/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
       answers in to future equations and if that answer changes, so does
       the equations it’s used in.
     '';
-    homepage = https://github.com/parnold-x/nasc;
+    homepage = "https://github.com/parnold-x/nasc";
     maintainers = with maintainers; [ samdroid-apps ];
     platforms = platforms.linux;
     license = licenses.gpl3Plus;
diff --git a/pkgs/applications/science/math/nauty/default.nix b/pkgs/applications/science/math/nauty/default.nix
index 986610eea60d7..64cc4a9aa0034 100644
--- a/pkgs/applications/science/math/nauty/default.nix
+++ b/pkgs/applications/science/math/nauty/default.nix
@@ -37,6 +37,6 @@ stdenv.mkDerivation rec {
     license = licenses.asl20;
     maintainers = with maintainers; [ raskin timokau ];
     platforms = platforms.unix;
-    homepage = http://pallini.di.uniroma1.it/;
+    homepage = "http://pallini.di.uniroma1.it/";
   };
 }
diff --git a/pkgs/applications/science/math/pari/default.nix b/pkgs/applications/science/math/pari/default.nix
index 8f2f740f24830..8b5176c94f693 100644
--- a/pkgs/applications/science/math/pari/default.nix
+++ b/pkgs/applications/science/math/pari/default.nix
@@ -81,8 +81,8 @@ stdenv.mkDerivation rec {
           run 3 or 4 times faster.) gp2c currently only understands a subset
            of the GP language.
     '';
-    homepage    = http://pari.math.u-bordeaux.fr;
-    downloadPage = http://pari.math.u-bordeaux.fr/download.html;
+    homepage    = "http://pari.math.u-bordeaux.fr";
+    downloadPage = "http://pari.math.u-bordeaux.fr/download.html";
     license     = licenses.gpl2Plus;
     maintainers = with maintainers; [ ertes raskin AndersonTorres timokau ];
     platforms   = platforms.linux ++ platforms.darwin;
diff --git a/pkgs/applications/science/math/pcalc/default.nix b/pkgs/applications/science/math/pcalc/default.nix
index 51c93f197e4f8..f372357fe7d8e 100644
--- a/pkgs/applications/science/math/pcalc/default.nix
+++ b/pkgs/applications/science/math/pcalc/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
   version = "20141224";
 
   src = fetchgit {
-    url = git://git.code.sf.net/p/pcalc/code;
+    url = "git://git.code.sf.net/p/pcalc/code";
     rev = "181d60d3c880da4344fef7138065943eb3b9255f";
     sha256 = "1hd5bh20j5xzvv6qa0fmzmv0h8sf38r7zgi7y0b6nk17pjq33v90";
   };
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ bison flex ];
 
   meta = {
-    homepage = http://pcalc.sourceforge.net/;
+    homepage = "http://pcalc.sourceforge.net/";
     description = "Programmer's calculator";
     license = licenses.gpl2;
     maintainers = with stdenv.lib.maintainers; [ ftrvxmtrx ];
diff --git a/pkgs/applications/science/math/perseus/default.nix b/pkgs/applications/science/math/perseus/default.nix
index 2d150d0c30e95..55293e6c8a79a 100644
--- a/pkgs/applications/science/math/perseus/default.nix
+++ b/pkgs/applications/science/math/perseus/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation {
       around datasets arising from point samples, images, distance
       matrices and so forth.
     '';
-    homepage = http://www.sas.upenn.edu/~vnanda/perseus/index.html;
+    homepage = "http://www.sas.upenn.edu/~vnanda/perseus/index.html";
     license = stdenv.lib.licenses.gpl3;
     maintainers = with stdenv.lib.maintainers; [erikryb];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/math/pspp/default.nix b/pkgs/applications/science/math/pspp/default.nix
index af338c74fd41b..95c2c3931b3cc 100644
--- a/pkgs/applications/science/math/pspp/default.nix
+++ b/pkgs/applications/science/math/pspp/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = https://www.gnu.org/software/pspp/;
+    homepage = "https://www.gnu.org/software/pspp/";
     description = "A free replacement for SPSS, a program for statistical analysis of sampled data";
     license = stdenv.lib.licenses.gpl3Plus;
 
diff --git a/pkgs/applications/science/math/pynac/default.nix b/pkgs/applications/science/math/pynac/default.nix
index 4022383dbc7db..82e331216712d 100644
--- a/pkgs/applications/science/math/pynac/default.nix
+++ b/pkgs/applications/science/math/pynac/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
       It is a lite version of GiNaC as well, not implementing all the features
       of the full GiNaC, and it is *only* meant to be used as a Python library.
     '';
-    homepage    = http://pynac.org;
+    homepage    = "http://pynac.org";
     license = licenses.gpl3;
     maintainers = with maintainers; [ timokau ];
     platforms   = platforms.unix;
diff --git a/pkgs/applications/science/math/ratpoints/default.nix b/pkgs/applications/science/math/ratpoints/default.nix
index 71d16fb626cd2..fb205a69f0385 100644
--- a/pkgs/applications/science/math/ratpoints/default.nix
+++ b/pkgs/applications/science/math/ratpoints/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = [stdenv.lib.maintainers.raskin];
     platforms = stdenv.lib.platforms.unix;
-    homepage = http://www.mathe2.uni-bayreuth.de/stoll/programs/;
+    homepage = "http://www.mathe2.uni-bayreuth.de/stoll/programs/";
     updateWalker = true;
   };
 }
diff --git a/pkgs/applications/science/math/ries/default.nix b/pkgs/applications/science/math/ries/default.nix
index b244ee75b304a..4adf3ef2096e0 100644
--- a/pkgs/applications/science/math/ries/default.nix
+++ b/pkgs/applications/science/math/ries/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
   makeFlags = [ "PREFIX=$(out)" ];
 
   meta = with stdenv.lib; {
-    homepage = https://mrob.com/pub/ries/;
+    homepage = "https://mrob.com/pub/ries/";
     description = "Tool to produce a list of equations that approximately solve to a given number";
     platforms = platforms.all;
     maintainers = with maintainers; [ symphorien ];
diff --git a/pkgs/applications/science/math/ripser/default.nix b/pkgs/applications/science/math/ripser/default.nix
index a42a5b710ce06..1c8ced5ed222c 100644
--- a/pkgs/applications/science/math/ripser/default.nix
+++ b/pkgs/applications/science/math/ripser/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation {
   #Patch from dev branch to make compilation work.
   #Will be removed when it gets merged into master.
   patches = [(fetchurl {
-    url = https://github.com/Ripser/ripser/commit/dc78d8ce73ee35f3828f0aad67a4e53620277ebf.patch;
+    url = "https://github.com/Ripser/ripser/commit/dc78d8ce73ee35f3828f0aad67a4e53620277ebf.patch";
     sha256 = "1y93aqpqz8fm1cxxrf90dhh67im3ndkr8dnxgbw5y96296n4r924";
   })];
 
@@ -59,7 +59,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "A lean C++ code for the computation of Vietoris–Rips persistence barcodes";
-    homepage = https://github.com/Ripser/ripser;
+    homepage = "https://github.com/Ripser/ripser";
     license = stdenv.lib.licenses.lgpl3;
     maintainers = with stdenv.lib.maintainers; [erikryb];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/math/sage/flask-oldsessions.nix b/pkgs/applications/science/math/sage/flask-oldsessions.nix
index 0899c93602b93..403dc8708fabb 100644
--- a/pkgs/applications/science/math/sage/flask-oldsessions.nix
+++ b/pkgs/applications/science/math/sage/flask-oldsessions.nix
@@ -31,6 +31,6 @@ buildPythonPackage rec {
     description = "Provides a session class that works like the one in Flask before 0.10.";
     license = licenses.bsd2;
     maintainers = with maintainers; [ timokau ];
-    homepage = https://github.com/mitsuhiko/flask-oldsessions;
+    homepage = "https://github.com/mitsuhiko/flask-oldsessions";
   };
 }
diff --git a/pkgs/applications/science/math/sage/flask-openid.nix b/pkgs/applications/science/math/sage/flask-openid.nix
index 9043fabd9b4a9..527173dec80a0 100644
--- a/pkgs/applications/science/math/sage/flask-openid.nix
+++ b/pkgs/applications/science/math/sage/flask-openid.nix
@@ -23,6 +23,6 @@ buildPythonPackage rec {
     description = "Adds openid support to flask applications";
     license = licenses.bsd2;
     maintainers = with maintainers; [ timokau ];
-    homepage = https://pythonhosted.org/Flask-OpenID/;
+    homepage = "https://pythonhosted.org/Flask-OpenID/";
   };
 }
diff --git a/pkgs/applications/science/math/sage/python-openid.nix b/pkgs/applications/science/math/sage/python-openid.nix
index 1bfe02f50df18..4c7fdadadaf04 100644
--- a/pkgs/applications/science/math/sage/python-openid.nix
+++ b/pkgs/applications/science/math/sage/python-openid.nix
@@ -35,6 +35,6 @@ buildPythonPackage rec {
     description = "OpenID library for Python";
     license = licenses.asl20;
     maintainers = with maintainers; [ timokau ];
-    homepage = https://github.com/openid/python-openid/;
+    homepage = "https://github.com/openid/python-openid/";
   };
 }
diff --git a/pkgs/applications/science/math/scilab-bin/default.nix b/pkgs/applications/science/math/scilab-bin/default.nix
index 8e85cece9b286..f9abdee2d1486 100644
--- a/pkgs/applications/science/math/scilab-bin/default.nix
+++ b/pkgs/applications/science/math/scilab-bin/default.nix
@@ -96,7 +96,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    homepage = http://www.scilab.org/;
+    homepage = "http://www.scilab.org/";
     description = "Scientific software package for numerical computations (Matlab lookalike)";
     # see http://www.scilab.org/legal_notice
     license = "Scilab";
diff --git a/pkgs/applications/science/math/scilab/default.nix b/pkgs/applications/science/math/scilab/default.nix
index 02f1f4e58a9d2..24b3feef51e11 100644
--- a/pkgs/applications/science/math/scilab/default.nix
+++ b/pkgs/applications/science/math/scilab/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
   makeFlags = [ "all" ];
 
   meta = {
-    homepage = http://www.scilab.org/;
+    homepage = "http://www.scilab.org/";
     description = "Scientific software package for numerical computations (Matlab lookalike)";
     # see http://www.scilab.org/legal
     license = "SciLab";
diff --git a/pkgs/applications/science/math/scotch/default.nix b/pkgs/applications/science/math/scotch/default.nix
index 610f1ef05c0fe..75a6b2dba68c3 100644
--- a/pkgs/applications/science/math/scotch/default.nix
+++ b/pkgs/applications/science/math/scotch/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
       Scotch is a software package for graph and mesh/hypergraph partitioning, graph clustering, 
       and sparse matrix ordering.
     '';
-    homepage = http://www.labri.fr/perso/pelegrin/scotch;
+    homepage = "http://www.labri.fr/perso/pelegrin/scotch";
     license = stdenv.lib.licenses.cecill-c;
     maintainers = [ stdenv.lib.maintainers.bzizou ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/math/singular/default.nix b/pkgs/applications/science/math/singular/default.nix
index fccd1489e11ca..a8c4f6bb9a09d 100644
--- a/pkgs/applications/science/math/singular/default.nix
+++ b/pkgs/applications/science/math/singular/default.nix
@@ -112,7 +112,7 @@ stdenv.mkDerivation rec {
     # 32 bit x86 fails with some link error: `undefined reference to `__divmoddi4@GCC_7.0.0'`
     platforms = subtractLists platforms.i686 platforms.unix;
     license = licenses.gpl3; # Or GPLv2 at your option - but not GPLv4
-    homepage = http://www.singular.uni-kl.de;
+    homepage = "http://www.singular.uni-kl.de";
     downloadPage = "http://www.mathematik.uni-kl.de/ftp/pub/Math/Singular/SOURCES/";
   };
 }
diff --git a/pkgs/applications/science/math/speedcrunch/default.nix b/pkgs/applications/science/math/speedcrunch/default.nix
index 67561658eb256..4bb39ab73f5fe 100644
--- a/pkgs/applications/science/math/speedcrunch/default.nix
+++ b/pkgs/applications/science/math/speedcrunch/default.nix
@@ -20,7 +20,7 @@ mkDerivation rec {
   '';
 
   meta = with lib; {
-    homepage    = http://speedcrunch.org;
+    homepage    = "http://speedcrunch.org";
     license     = licenses.gpl2Plus;
     description = "A fast power user calculator";
     longDescription = ''
diff --git a/pkgs/applications/science/math/weka/default.nix b/pkgs/applications/science/math/weka/default.nix
index ec9ea0b85331a..c4fc19d6c6b71 100644
--- a/pkgs/applications/science/math/weka/default.nix
+++ b/pkgs/applications/science/math/weka/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://www.cs.waikato.ac.nz/ml/weka/;
+    homepage = "http://www.cs.waikato.ac.nz/ml/weka/";
     description = "Collection of machine learning algorithms for data mining tasks";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = [ stdenv.lib.maintainers.mimame ];
diff --git a/pkgs/applications/science/math/yacas/default.nix b/pkgs/applications/science/math/yacas/default.nix
index ed680b1b4cde1..c19d8f0fbc17c 100644
--- a/pkgs/applications/science/math/yacas/default.nix
+++ b/pkgs/applications/science/math/yacas/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Easy to use, general purpose Computer Algebra System";
-    homepage = http://www.yacas.org/;
+    homepage = "http://www.yacas.org/";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = with stdenv.lib.platforms; linux;
diff --git a/pkgs/applications/science/medicine/aliza/default.nix b/pkgs/applications/science/medicine/aliza/default.nix
index e135534d1acf0..279f602e3fd5d 100644
--- a/pkgs/applications/science/medicine/aliza/default.nix
+++ b/pkgs/applications/science/medicine/aliza/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Medical imaging software with 2D, 3D and 4D capabilities";
-    homepage = https://www.aliza-dicom-viewer.com;
+    homepage = "https://www.aliza-dicom-viewer.com";
     license = licenses.unfreeRedistributable;
     maintainers = with maintainers; [ mounium ];
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/misc/boinc/default.nix b/pkgs/applications/science/misc/boinc/default.nix
index 38b9b8ec66d1a..802abae80e1d8 100644
--- a/pkgs/applications/science/misc/boinc/default.nix
+++ b/pkgs/applications/science/misc/boinc/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Free software for distributed and grid computing";
-    homepage = https://boinc.berkeley.edu/;
+    homepage = "https://boinc.berkeley.edu/";
     license = stdenv.lib.licenses.lgpl2Plus;
     platforms = stdenv.lib.platforms.linux;  # arbitrary choice
   };
diff --git a/pkgs/applications/science/misc/colmap/default.nix b/pkgs/applications/science/misc/colmap/default.nix
index da118f6bca57f..02adb689e20b4 100644
--- a/pkgs/applications/science/misc/colmap/default.nix
+++ b/pkgs/applications/science/misc/colmap/default.nix
@@ -36,7 +36,7 @@ mkDerivation rec {
        COLMAP is a general-purpose Structure-from-Motion (SfM) and Multi-View Stereo (MVS) pipeline
        with a graphical and command-line interface.
     '';
-    homepage = https://colmap.github.io/index.html;
+    homepage = "https://colmap.github.io/index.html";
     license = licenses.bsd2;
     platforms = platforms.linux;
     maintainers = with maintainers; [ lebastr ];
diff --git a/pkgs/applications/science/misc/cytoscape/default.nix b/pkgs/applications/science/misc/cytoscape/default.nix
index 8ed3deed804c9..b4e4adbfa6f24 100644
--- a/pkgs/applications/science/misc/cytoscape/default.nix
+++ b/pkgs/applications/science/misc/cytoscape/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://www.cytoscape.org;
+    homepage = "http://www.cytoscape.org";
     description = "A general platform for complex network analysis and visualization";
     license = stdenv.lib.licenses.lgpl21;
     maintainers = [stdenv.lib.maintainers.mimame];
diff --git a/pkgs/applications/science/misc/fityk/default.nix b/pkgs/applications/science/misc/fityk/default.nix
index 8d0336f582827..18def1d24e2fd 100644
--- a/pkgs/applications/science/misc/fityk/default.nix
+++ b/pkgs/applications/science/misc/fityk/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   meta = {
     description = "Curve fitting and peak fitting software";
     license = stdenv.lib.licenses.gpl2;
-    homepage = http://fityk.nieto.pl/;
+    homepage = "http://fityk.nieto.pl/";
     platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/applications/science/misc/gephi/default.nix b/pkgs/applications/science/misc/gephi/default.nix
index 577c8ecfa0586..b6b53013cb4be 100644
--- a/pkgs/applications/science/misc/gephi/default.nix
+++ b/pkgs/applications/science/misc/gephi/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A platform for visualizing and manipulating large graphs";
-    homepage = https://gephi.org;
+    homepage = "https://gephi.org";
     license = licenses.gpl3;
     maintainers = [ maintainers.taeer ];
     platforms = [ "x86_64-linux" ];
diff --git a/pkgs/applications/science/misc/gplates/default.nix b/pkgs/applications/science/misc/gplates/default.nix
index 9b510d432fb30..592e36370e0f4 100644
--- a/pkgs/applications/science/misc/gplates/default.nix
+++ b/pkgs/applications/science/misc/gplates/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Desktop software for the interactive visualisation of plate-tectonics";
-    homepage = https://www.gplates.org;
+    homepage = "https://www.gplates.org";
     license = licenses.gpl2;
     platforms = platforms.all;
     broken = true;
diff --git a/pkgs/applications/science/misc/megam/default.nix b/pkgs/applications/science/misc/megam/default.nix
index 6cdc86d20eb28..8bb64932f20ee 100644
--- a/pkgs/applications/science/misc/megam/default.nix
+++ b/pkgs/applications/science/misc/megam/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation {
           than the iterative scaling techniques used in almost every
           other maxent package out there.  '';
 
-    homepage = http://www.umiacs.umd.edu/~hal/megam;
+    homepage = "http://www.umiacs.umd.edu/~hal/megam";
 
     license = "non-commercial";
 
diff --git a/pkgs/applications/science/misc/netlogo/default.nix b/pkgs/applications/science/misc/netlogo/default.nix
index 9b0279bd4d099..af892441a4723 100644
--- a/pkgs/applications/science/misc/netlogo/default.nix
+++ b/pkgs/applications/science/misc/netlogo/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
       NetLogo is a multi-agent programmable modeling environment. It is used by
       many tens of thousands of students, teachers and researchers worldwide.
     '';
-    homepage = https://ccl.northwestern.edu/netlogo/index.shtml;
+    homepage = "https://ccl.northwestern.edu/netlogo/index.shtml";
     license = licenses.gpl2;
     maintainers = [ maintainers.dpaetzel ];
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/misc/openmvg/default.nix b/pkgs/applications/science/misc/openmvg/default.nix
index 121e953f43af9..aea376301abd7 100644
--- a/pkgs/applications/science/misc/openmvg/default.nix
+++ b/pkgs/applications/science/misc/openmvg/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A library for computer-vision scientists and targeted for the Multiple View Geometry community";
-    homepage = https://openmvg.readthedocs.io/en/latest/;
+    homepage = "https://openmvg.readthedocs.io/en/latest/";
     license = stdenv.lib.licenses.mpl20;
     platforms = stdenv.lib.platforms.linux;
     maintainers = with stdenv.lib.maintainers; [ mdaiter ];
diff --git a/pkgs/applications/science/misc/openmvs/default.nix b/pkgs/applications/science/misc/openmvs/default.nix
index bb067fbca7a9c..efdd86f0ab2dc 100644
--- a/pkgs/applications/science/misc/openmvs/default.nix
+++ b/pkgs/applications/science/misc/openmvs/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A library for computer-vision scientists and especially targeted to the Multi-View Stereo reconstruction community";
-    homepage = http://cdcseacave.github.io/openMVS/;
+    homepage = "http://cdcseacave.github.io/openMVS/";
     license = licenses.agpl3;
     platforms = platforms.linux;
     maintainers = with maintainers; [ mdaiter ];
diff --git a/pkgs/applications/science/misc/root/5.nix b/pkgs/applications/science/misc/root/5.nix
index 8422eb8752b11..fd06d721ebd1c 100644
--- a/pkgs/applications/science/misc/root/5.nix
+++ b/pkgs/applications/science/misc/root/5.nix
@@ -88,7 +88,7 @@ stdenv.mkDerivation rec {
   setupHook = ./setup-hook.sh;
 
   meta = with stdenv.lib; {
-    homepage = https://root.cern.ch/;
+    homepage = "https://root.cern.ch/";
     description = "A data analysis framework";
     platforms = platforms.unix;
     maintainers = with maintainers; [ veprbl ];
diff --git a/pkgs/applications/science/misc/root/default.nix b/pkgs/applications/science/misc/root/default.nix
index b901e40a194a9..990952e21acac 100644
--- a/pkgs/applications/science/misc/root/default.nix
+++ b/pkgs/applications/science/misc/root/default.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
   setupHook = ./setup-hook.sh;
 
   meta = with stdenv.lib; {
-    homepage = https://root.cern.ch/;
+    homepage = "https://root.cern.ch/";
     description = "A data analysis framework";
     platforms = platforms.unix;
     maintainers = [ maintainers.veprbl ];
diff --git a/pkgs/applications/science/misc/sasview/default.nix b/pkgs/applications/science/misc/sasview/default.nix
index ed6fa3ae886b1..bbbe80eb65686 100644
--- a/pkgs/applications/science/misc/sasview/default.nix
+++ b/pkgs/applications/science/misc/sasview/default.nix
@@ -67,7 +67,7 @@ python.pkgs.buildPythonApplication rec {
   patches = [ ./pyparsing-fix.patch ./local_config.patch ];
 
   meta = with lib; {
-    homepage = https://www.sasview.org;
+    homepage = "https://www.sasview.org";
     description = "Fitting and data analysis for small angle scattering data";
     maintainers = with maintainers; [ rprospero ];
     license = licenses.bsd3;
diff --git a/pkgs/applications/science/misc/sasview/xhtml2pdf.nix b/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
index 8eff2057928aa..42b9560d9b8d7 100644
--- a/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
+++ b/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
@@ -26,7 +26,7 @@ buildPythonPackage rec {
 
   meta = {
     description = "A pdf converter for the ReportLab Toolkit";
-    homepage = https://github.com/xhtml2pdf/xhtml2pdf;
+    homepage = "https://github.com/xhtml2pdf/xhtml2pdf";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ rprospero ];
   };
diff --git a/pkgs/applications/science/misc/simgrid/default.nix b/pkgs/applications/science/misc/simgrid/default.nix
index b8aef4bd53fe6..0ba1cd0d2faf4 100644
--- a/pkgs/applications/science/misc/simgrid/default.nix
+++ b/pkgs/applications/science/misc/simgrid/default.nix
@@ -104,7 +104,7 @@ stdenv.mkDerivation rec {
       scheduling on distributed computing platforms ranging from simple
       network of workstations to Computational Grids.
     '';
-    homepage = https://simgrid.org/;
+    homepage = "https://simgrid.org/";
     license = licenses.lgpl2Plus;
     maintainers = with maintainers; [ mickours mpoquet ];
     platforms = ["x86_64-linux"];
diff --git a/pkgs/applications/science/misc/tulip/default.nix b/pkgs/applications/science/misc/tulip/default.nix
index 3f83f2f30a674..f29cd41169d44 100644
--- a/pkgs/applications/science/misc/tulip/default.nix
+++ b/pkgs/applications/science/misc/tulip/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
          data that can be tailored to the problems he or she is addressing.
       '';
 
-    homepage = http://tulip.labri.fr/;
+    homepage = "http://tulip.labri.fr/";
 
     license = stdenv.lib.licenses.gpl3Plus;
 
diff --git a/pkgs/applications/science/misc/vite/default.nix b/pkgs/applications/science/misc/vite/default.nix
index 3e7c7a42eb826..0d749bb9be4fc 100644
--- a/pkgs/applications/science/misc/vite/default.nix
+++ b/pkgs/applications/science/misc/vite/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
       parallel or distributed applications.
     '';
 
-    homepage = http://vite.gforge.inria.fr/;
+    homepage = "http://vite.gforge.inria.fr/";
     license = stdenv.lib.licenses.cecill20;
     maintainers = with stdenv.lib.maintainers; [ ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/science/molecular-dynamics/dl-poly-classic/default.nix b/pkgs/applications/science/molecular-dynamics/dl-poly-classic/default.nix
index b0ed5e9463790..51978e95766d7 100644
--- a/pkgs/applications/science/molecular-dynamics/dl-poly-classic/default.nix
+++ b/pkgs/applications/science/molecular-dynamics/dl-poly-classic/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://www.ccp5.ac.uk/DL_POLY_C;
+    homepage = "https://www.ccp5.ac.uk/DL_POLY_C";
     description = "DL_POLY Classic is a general purpose molecular dynamics simulation package";
     license = licenses.bsdOriginal;
     platforms = [ "x86_64-linux" ];
diff --git a/pkgs/applications/science/molecular-dynamics/lammps/default.nix b/pkgs/applications/science/molecular-dynamics/lammps/default.nix
index 234bbdab31586..ab706a8893104 100644
--- a/pkgs/applications/science/molecular-dynamics/lammps/default.nix
+++ b/pkgs/applications/science/molecular-dynamics/lammps/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
       funding from the DOE. It is an open-source code, distributed freely
       under the terms of the GNU Public License (GPL).
       '';
-    homepage = http://lammps.sandia.gov;
+    homepage = "http://lammps.sandia.gov";
     license = licenses.gpl2;
     platforms = platforms.linux;
     maintainers = [ maintainers.costrouc ];
diff --git a/pkgs/applications/science/physics/quantomatic/default.nix b/pkgs/applications/science/physics/quantomatic/default.nix
index b22b9d412fdc3..a9c83310b2ff4 100644
--- a/pkgs/applications/science/physics/quantomatic/default.nix
+++ b/pkgs/applications/science/physics/quantomatic/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "A piece of software for reasoning about monoidal theories; in particular, quantum information processing";
     license = licenses.gpl3;
-    homepage = https://quantomatic.github.io/;
+    homepage = "https://quantomatic.github.io/";
     maintainers = with maintainers; [ nickhu ];
     platforms = platforms.all;
   };
diff --git a/pkgs/applications/science/physics/sacrifice/default.nix b/pkgs/applications/science/physics/sacrifice/default.nix
index 80417f0fcc184..609fea9f7dca5 100644
--- a/pkgs/applications/science/physics/sacrifice/default.nix
+++ b/pkgs/applications/science/physics/sacrifice/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation {
   meta = {
     description = "A standalone contribution to AGILe for steering Pythia 8";
     license     = stdenv.lib.licenses.gpl2;
-    homepage    = https://agile.hepforge.org/trac/wiki/Sacrifice;
+    homepage    = "https://agile.hepforge.org/trac/wiki/Sacrifice";
     platforms   = stdenv.lib.platforms.unix;
     maintainers = with stdenv.lib.maintainers; [ veprbl ];
   };
diff --git a/pkgs/applications/science/physics/sherpa/default.nix b/pkgs/applications/science/physics/sherpa/default.nix
index 04115399c1a7a..85b2ddd4d07ac 100644
--- a/pkgs/applications/science/physics/sherpa/default.nix
+++ b/pkgs/applications/science/physics/sherpa/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Simulation of High-Energy Reactions of PArticles in lepton-lepton, lepton-photon, photon-photon, lepton-hadron and hadron-hadron collisions";
     license     = stdenv.lib.licenses.gpl2;
-    homepage    = https://gitlab.com/sherpa-team/sherpa;
+    homepage    = "https://gitlab.com/sherpa-team/sherpa";
     platforms   = stdenv.lib.platforms.unix;
     maintainers = with stdenv.lib.maintainers; [ veprbl ];
   };
diff --git a/pkgs/applications/science/physics/xfitter/default.nix b/pkgs/applications/science/physics/xfitter/default.nix
index 818bea7d0ff53..f4d70e790797a 100644
--- a/pkgs/applications/science/physics/xfitter/default.nix
+++ b/pkgs/applications/science/physics/xfitter/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "The xFitter project is an open source QCD fit framework ready to extract PDFs and assess the impact of new data";
     license     = licenses.gpl3;
-    homepage    = https://www.xfitter.org/xFitter;
+    homepage    = "https://www.xfitter.org/xFitter";
     platforms   = platforms.unix;
     maintainers = with maintainers; [ veprbl ];
   };
diff --git a/pkgs/applications/science/programming/fdr/default.nix b/pkgs/applications/science/programming/fdr/default.nix
index 2c0bb84c801f4..4eeca5c1759bc 100644
--- a/pkgs/applications/science/programming/fdr/default.nix
+++ b/pkgs/applications/science/programming/fdr/default.nix
@@ -2,7 +2,7 @@
 stdenv.mkDerivation {
   name = "fdr-4.2.3";
   src = fetchurl {
-    url = https://www.cs.ox.ac.uk/projects/fdr/downloads/fdr-3789-linux-x86_64.tar.gz;
+    url = "https://www.cs.ox.ac.uk/projects/fdr/downloads/fdr-3789-linux-x86_64.tar.gz";
     sha256 = "0n2yqichym5xdawlgk3r7yha88k7ycnx6585jfrcm7043sls1i88";
   };
 
@@ -59,7 +59,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://www.cs.ox.ac.uk/projects/fdr/;
+    homepage = "https://www.cs.ox.ac.uk/projects/fdr/";
     description = "The CSP refinement checker";
     license = licenses.unfreeRedistributable;
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/programming/groove/default.nix b/pkgs/applications/science/programming/groove/default.nix
index e854f20d39a3e..87b7b02317a27 100644
--- a/pkgs/applications/science/programming/groove/default.nix
+++ b/pkgs/applications/science/programming/groove/default.nix
@@ -46,7 +46,7 @@ in stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "GRaphs for Object-Oriented VErification";
-    homepage = http://groove.cs.utwente.nl/;
+    homepage = "http://groove.cs.utwente.nl/";
     license = licenses.asl20;
     platforms = platforms.all;
     maintainers = with maintainers; [ jfrankenau ];
diff --git a/pkgs/applications/science/programming/scyther/default.nix b/pkgs/applications/science/programming/scyther/default.nix
index b4daae1afc040..5cfe081072a4e 100644
--- a/pkgs/applications/science/programming/scyther/default.nix
+++ b/pkgs/applications/science/programming/scyther/default.nix
@@ -14,7 +14,7 @@ let
 
   meta = with lib; {
     description = "Scyther is a tool for the automatic verification of security protocols.";
-    homepage = https://www.cs.ox.ac.uk/people/cas.cremers/scyther/;
+    homepage = "https://www.cs.ox.ac.uk/people/cas.cremers/scyther/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ infinisil ];
     platforms = platforms.linux;
diff --git a/pkgs/applications/science/robotics/apmplanner2/default.nix b/pkgs/applications/science/robotics/apmplanner2/default.nix
index 0bc58c50335a0..ede698e2b0b4f 100644
--- a/pkgs/applications/science/robotics/apmplanner2/default.nix
+++ b/pkgs/applications/science/robotics/apmplanner2/default.nix
@@ -46,7 +46,7 @@ mkDerivation rec {
       A GUI ground control station for autonomous vehicles using the MAVLink protocol.
       Includes support for the APM and PX4 based controllers.
     '';
-    homepage = https://ardupilot.org/planner2/;
+    homepage = "https://ardupilot.org/planner2/";
     license = lib.licenses.gpl3;
     maintainers = with lib.maintainers; [ wucke13 ];
   };
diff --git a/pkgs/applications/science/robotics/betaflight-configurator/default.nix b/pkgs/applications/science/robotics/betaflight-configurator/default.nix
index 31295114375df..4684ba8c1937b 100644
--- a/pkgs/applications/science/robotics/betaflight-configurator/default.nix
+++ b/pkgs/applications/science/robotics/betaflight-configurator/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
       Various types of aircraft are supported by the tool and by Betaflight, e.g. 
       quadcopters, hexacopters, octocopters and fixed-wing aircraft.
     '';
-    homepage    = https://github.com/betaflight/betaflight/wiki;
+    homepage    = "https://github.com/betaflight/betaflight/wiki";
     license     = licenses.gpl3;
     maintainers = with maintainers; [ wucke13 ];
     platforms   = platforms.linux;
diff --git a/pkgs/applications/science/robotics/gazebo/default.nix b/pkgs/applications/science/robotics/gazebo/default.nix
index a3ebda463b913..aea298b654859 100644
--- a/pkgs/applications/science/robotics/gazebo/default.nix
+++ b/pkgs/applications/science/robotics/gazebo/default.nix
@@ -75,7 +75,7 @@ stdenv.mkDerivation rec {
     ++ optional withHdf5Support hdf5;
 
   meta = with stdenv.lib; {
-    homepage = http://gazebosim.org/;
+    homepage = "http://gazebosim.org/";
     description = "Multi-robot simulator for outdoor environments";
     license = licenses.asl20;
     maintainers = with maintainers; [ pxc ];
diff --git a/pkgs/applications/science/robotics/yarp/default.nix b/pkgs/applications/science/robotics/yarp/default.nix
index d14c0bb0fe81e..df2c569a31c75 100644
--- a/pkgs/applications/science/robotics/yarp/default.nix
+++ b/pkgs/applications/science/robotics/yarp/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Yet Another Robot Platform";
-    homepage = http://yarp.it;
+    homepage = "http://yarp.it";
     license = stdenv.lib.licenses.lgpl21;
     platforms = stdenv.lib.platforms.linux;
     maintainers = [ stdenv.lib.maintainers.nico202 ];
author	Michael Reilly <OmnipotentEntity@gmail.com>	2020-03-31 21:11:51 -0400
committer	Jörg Thalheim <joerg@thalheim.io>	2020-04-10 17:54:53 +0100
commit	84cf00f98031e93f389f1eb93c4a7374a33cc0a9 (patch)
tree	203c51a8740cb4893b8cfc4426d4cd49a97430e0 /pkgs/applications/science
parent	bf5eb87033cc6a5de5cc48da544c17a4dedc790b (diff)