treewide: Remove indefinite article from meta.description

nix run nixpkgs#silver-searcher -- -G '\.nix$' -0l 'description.*"[Aa]n?' pkgs \
  | xargs -0 nix run nixpkgs#gnused -- -i '' -Ee 's/(description.*")[Aa]n? (.)/\1\U\2/'

15 files changed, 15 insertions, 15 deletions

diff --git a/pkgs/applications/science/misc/bada-bib/default.nix b/pkgs/applications/science/misc/bada-bib/default.nix
index 1895315325747..83abd40030ee5 100644
--- a/pkgs/applications/science/misc/bada-bib/default.nix
+++ b/pkgs/applications/science/misc/bada-bib/default.nix
@@ -74,7 +74,7 @@ python3Packages.buildPythonApplication rec {
 
   meta = with lib; {
     homepage = "https://github.com/RogerCrocker/BadaBib";
-    description = "A simple BibTeX Viewer and Editor";
+    description = "Simple BibTeX Viewer and Editor";
     mainProgram = "badabib";
     maintainers = [ maintainers.Cogitri ];
     license = licenses.gpl3Plus;
diff --git a/pkgs/applications/science/misc/cytoscape/default.nix b/pkgs/applications/science/misc/cytoscape/default.nix
index 1d42600d9770d..392a529f0dedd 100644
--- a/pkgs/applications/science/misc/cytoscape/default.nix
+++ b/pkgs/applications/science/misc/cytoscape/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = "http://www.cytoscape.org";
-    description = "A general platform for complex network analysis and visualization";
+    description = "General platform for complex network analysis and visualization";
     mainProgram = "cytoscape";
     license = lib.licenses.lgpl21;
     maintainers = [lib.maintainers.mimame];
diff --git a/pkgs/applications/science/misc/gephi/default.nix b/pkgs/applications/science/misc/gephi/default.nix
index ab8134daf3aea..77b6584412a5a 100644
--- a/pkgs/applications/science/misc/gephi/default.nix
+++ b/pkgs/applications/science/misc/gephi/default.nix
@@ -36,7 +36,7 @@ mavenJdk11.buildMavenPackage rec {
   '';
 
   meta = with lib; {
-    description = "A platform for visualizing and manipulating large graphs";
+    description = "Platform for visualizing and manipulating large graphs";
     mainProgram = "gephi";
     homepage = "https://gephi.org";
     sourceProvenance = with sourceTypes; [
diff --git a/pkgs/applications/science/misc/graphia/default.nix b/pkgs/applications/science/misc/graphia/default.nix
index b6d33f0840611..a5055220e95fb 100644
--- a/pkgs/applications/science/misc/graphia/default.nix
+++ b/pkgs/applications/science/misc/graphia/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/graphia.x86_64-darwin
     broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
-    description = "A visualisation tool for the creation and analysis of graphs";
+    description = "Visualisation tool for the creation and analysis of graphs";
     homepage = "https://graphia.app";
     license = licenses.gpl3Only;
     mainProgram = "Graphia";
diff --git a/pkgs/applications/science/misc/netlogo/default.nix b/pkgs/applications/science/misc/netlogo/default.nix
index 13c3c36f90ae6..20d001d8dba23 100644
--- a/pkgs/applications/science/misc/netlogo/default.nix
+++ b/pkgs/applications/science/misc/netlogo/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "A multi-agent programmable modeling environment";
+    description = "Multi-agent programmable modeling environment";
     mainProgram = "netlogo";
     longDescription = ''
       NetLogo is a multi-agent programmable modeling environment. It is used by
diff --git a/pkgs/applications/science/misc/openmodelica/combined/default.nix b/pkgs/applications/science/misc/openmodelica/combined/default.nix
index bc6bc96202152..8d937dddac547 100644
--- a/pkgs/applications/science/misc/openmodelica/combined/default.nix
+++ b/pkgs/applications/science/misc/openmodelica/combined/default.nix
@@ -21,7 +21,7 @@ symlinkJoin {
   '';
 
   meta = with lib; {
-    description = "An open-source Modelica-based modeling and simulation environment intended for industrial and academic usage";
+    description = "Open-source Modelica-based modeling and simulation environment intended for industrial and academic usage";
     homepage = "https://openmodelica.org";
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ balodja smironov ];
diff --git a/pkgs/applications/science/misc/openmodelica/omedit/default.nix b/pkgs/applications/science/misc/openmodelica/omedit/default.nix
index 57863482fef65..731d64c41755b 100644
--- a/pkgs/applications/science/misc/openmodelica/omedit/default.nix
+++ b/pkgs/applications/science/misc/openmodelica/omedit/default.nix
@@ -30,7 +30,7 @@ mkOpenModelicaDerivation rec {
   QMAKESPEC = "linux-clang";
 
   meta = with lib; {
-    description = "A Modelica connection editor for OpenModelica";
+    description = "Modelica connection editor for OpenModelica";
     homepage = "https://openmodelica.org";
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ balodja smironov ];
diff --git a/pkgs/applications/science/misc/openmodelica/omlibrary/default.nix b/pkgs/applications/science/misc/openmodelica/omlibrary/default.nix
index 6821e33d1a629..dee5aacf66655 100644
--- a/pkgs/applications/science/misc/openmodelica/omlibrary/default.nix
+++ b/pkgs/applications/science/misc/openmodelica/omlibrary/default.nix
@@ -24,7 +24,7 @@ mkOpenModelicaDerivation {
   '';
 
   meta = with lib; {
-    description = "A collection of Modelica libraries to use with OpenModelica,
+    description = "Collection of Modelica libraries to use with OpenModelica,
 including Modelica Standard Library";
     homepage = "https://openmodelica.org";
     license = licenses.gpl3Only;
diff --git a/pkgs/applications/science/misc/openmodelica/omparser/default.nix b/pkgs/applications/science/misc/openmodelica/omparser/default.nix
index cbf8f2255e76c..03030de2cf486 100644
--- a/pkgs/applications/science/misc/openmodelica/omparser/default.nix
+++ b/pkgs/applications/science/misc/openmodelica/omparser/default.nix
@@ -18,7 +18,7 @@ mkOpenModelicaDerivation rec {
   patches = [ ./Makefile.in.patch ];
 
   meta = with lib; {
-    description = "An antlr4-based parser of Modelica files from OpenModelica
+    description = "Antlr4-based parser of Modelica files from OpenModelica
 suite";
     homepage = "https://openmodelica.org";
     license = licenses.gpl3Only;
diff --git a/pkgs/applications/science/misc/openmvg/default.nix b/pkgs/applications/science/misc/openmvg/default.nix
index 5cf4dc4377521..f622f87d2e412 100644
--- a/pkgs/applications/science/misc/openmvg/default.nix
+++ b/pkgs/applications/science/misc/openmvg/default.nix
@@ -74,7 +74,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     broken = stdenv.isDarwin && stdenv.isx86_64;
-    description = "A library for computer-vision scientists and targeted for the Multiple View Geometry community";
+    description = "Library for computer-vision scientists and targeted for the Multiple View Geometry community";
     homepage = "https://openmvg.readthedocs.io/en/latest/";
     license = lib.licenses.mpl20;
     platforms = lib.platforms.unix;
diff --git a/pkgs/applications/science/misc/reason-shell/default.nix b/pkgs/applications/science/misc/reason-shell/default.nix
index 848f31abe4c6b..5491593cc7f70 100644
--- a/pkgs/applications/science/misc/reason-shell/default.nix
+++ b/pkgs/applications/science/misc/reason-shell/default.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   meta = with lib; {
-    description = "A shell for research papers";
+    description = "Shell for research papers";
     mainProgram = "reason";
     homepage = "https://github.com/jaywonchung/reason";
     changelog = "https://github.com/jaywonchung/reason/releases/tag/${src.rev}";
diff --git a/pkgs/applications/science/misc/root/5.nix b/pkgs/applications/science/misc/root/5.nix
index dfe7b5eca97f3..80f2df0688da3 100644
--- a/pkgs/applications/science/misc/root/5.nix
+++ b/pkgs/applications/science/misc/root/5.nix
@@ -153,7 +153,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     homepage = "https://root.cern.ch/";
-    description = "A data analysis framework";
+    description = "Data analysis framework";
     platforms = platforms.unix;
     broken = !stdenv.isx86_64 || stdenv.cc.isClang or false;
     maintainers = with maintainers; [ veprbl ];
diff --git a/pkgs/applications/science/misc/root/default.nix b/pkgs/applications/science/misc/root/default.nix
index c369319bcc9e8..ded47a661a21a 100644
--- a/pkgs/applications/science/misc/root/default.nix
+++ b/pkgs/applications/science/misc/root/default.nix
@@ -235,7 +235,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     homepage = "https://root.cern/";
-    description = "A data analysis framework";
+    description = "Data analysis framework";
     platforms = platforms.unix;
     maintainers = [ maintainers.guitargeek maintainers.veprbl ];
     license = licenses.lgpl21;
diff --git a/pkgs/applications/science/misc/sasview/xhtml2pdf.nix b/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
index 41d15e2f1babc..b7ace57d74afc 100644
--- a/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
+++ b/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   };
 
   meta = {
-    description = "A pdf converter for the ReportLab Toolkit";
+    description = "Pdf converter for the ReportLab Toolkit";
     homepage = "https://github.com/xhtml2pdf/xhtml2pdf";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ rprospero ];
diff --git a/pkgs/applications/science/misc/tulip/default.nix b/pkgs/applications/science/misc/tulip/default.nix
index 474df80ace034..9808a572836d8 100644
--- a/pkgs/applications/science/misc/tulip/default.nix
+++ b/pkgs/applications/science/misc/tulip/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   doCheck = false;
 
   meta = {
-    description = "A visualization framework for the analysis and visualization of relational data";
+    description = "Visualization framework for the analysis and visualization of relational data";
 
     longDescription =
       '' Tulip is an information visualization framework dedicated to the