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/'

28 files changed, 28 insertions, 28 deletions

diff --git a/pkgs/applications/science/math/4ti2/default.nix b/pkgs/applications/science/math/4ti2/default.nix
index 9424612c7587a..940e2e45d5acf 100644
--- a/pkgs/applications/science/math/4ti2/default.nix
+++ b/pkgs/applications/science/math/4ti2/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec{
 
   meta = with lib;{
     homepage = "https://4ti2.github.io/";
-    description = "A software package for algebraic, geometric and combinatorial problems on linear spaces";
+    description = "Software package for algebraic, geometric and combinatorial problems on linear spaces";
     license = with licenses; [ gpl2Plus ];
     maintainers = with maintainers; [ AndersonTorres ];
     platforms = platforms.all;
diff --git a/pkgs/applications/science/math/LiE/default.nix b/pkgs/applications/science/math/LiE/default.nix
index 7eb9edbb3b192..dbc66fe2a05fe 100644
--- a/pkgs/applications/science/math/LiE/default.nix
+++ b/pkgs/applications/science/math/LiE/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
   pname = "lie";
 
   meta = {
-    description = "A Computer algebra package for Lie group computations";
+    description = "Computer algebra package for Lie group computations";
     mainProgram = "lie";
     homepage = "http://wwwmathlabo.univ-poitiers.fr/~maavl/LiE/";
     license = lib.licenses.lgpl3; # see the website
diff --git a/pkgs/applications/science/math/bliss/default.nix b/pkgs/applications/science/math/bliss/default.nix
index 33969c705d05d..5673fcc34d959 100644
--- a/pkgs/applications/science/math/bliss/default.nix
+++ b/pkgs/applications/science/math/bliss/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "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";
+    description = "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";
     mainProgram = "bliss";
     homepage = "http://www.tcs.hut.fi/Software/bliss/";
     license = licenses.lgpl3;
diff --git a/pkgs/applications/science/math/cbc/default.nix b/pkgs/applications/science/math/cbc/default.nix
index fb92b1cc98fbb..aa979a78cb485 100644
--- a/pkgs/applications/science/math/cbc/default.nix
+++ b/pkgs/applications/science/math/cbc/default.nix
@@ -29,6 +29,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.epl10;
     maintainers = [ lib.maintainers.eelco ];
     platforms = lib.platforms.linux ++ lib.platforms.darwin;
-    description = "A mixed integer programming solver";
+    description = "Mixed integer programming solver";
   };
 }
diff --git a/pkgs/applications/science/math/clp/default.nix b/pkgs/applications/science/math/clp/default.nix
index 06032b4a3182e..f1c2c53638adf 100644
--- a/pkgs/applications/science/math/clp/default.nix
+++ b/pkgs/applications/science/math/clp/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     license = licenses.epl20;
     homepage = "https://github.com/coin-or/Clp";
-    description = "An open-source linear programming solver written in C++";
+    description = "Open-source linear programming solver written in C++";
     mainProgram = "clp";
     platforms = platforms.darwin ++ platforms.linux;
     maintainers = [ maintainers.vbgl ];
diff --git a/pkgs/applications/science/math/colpack/default.nix b/pkgs/applications/science/math/colpack/default.nix
index d5ab38ff75149..768366cc5d7a5 100644
--- a/pkgs/applications/science/math/colpack/default.nix
+++ b/pkgs/applications/science/math/colpack/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "A package comprising of implementations of algorithms for
+    description = "Package comprising of implementations of algorithms for
     vertex coloring and derivative computation";
     homepage = "https://cscapes.cs.purdue.edu/coloringpage/software.htm#functionalities";
     license = licenses.lgpl3Plus;
diff --git a/pkgs/applications/science/math/csdp/default.nix b/pkgs/applications/science/math/csdp/default.nix
index 6ce03008d3a98..c0f863a6d26b5 100644
--- a/pkgs/applications/science/math/csdp/default.nix
+++ b/pkgs/applications/science/math/csdp/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     homepage = "https://projects.coin-or.org/Csdp";
     license = lib.licenses.cpl10;
     maintainers = [ lib.maintainers.roconnor ];
-    description = "A C Library for Semidefinite Programming";
+    description = "C Library for Semidefinite Programming";
     platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/applications/science/math/dap/default.nix b/pkgs/applications/science/math/dap/default.nix
index ed3290f6c27d8..40ce12f66ebd0 100644
--- a/pkgs/applications/science/math/dap/default.nix
+++ b/pkgs/applications/science/math/dap/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     homepage = "https://www.gnu.org/software/dap";
-    description = "A small statistics and graphics package based on C";
+    description = "Small statistics and graphics package based on C";
     longDescription = ''
       Dap is a small statistics and graphics package based on C. Version 3.0 and
       later of Dap can read SBS programs (based on the utterly famous, industry
diff --git a/pkgs/applications/science/math/fricas/default.nix b/pkgs/applications/science/math/fricas/default.nix
index 41dc9d66b8a74..9f0b87f011a10 100644
--- a/pkgs/applications/science/math/fricas/default.nix
+++ b/pkgs/applications/science/math/fricas/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = "https://fricas.github.io";
-    description = "An advanced computer algebra system";
+    description = "Advanced computer algebra system";
     license = lib.licenses.bsd3;
 
     platforms = lib.platforms.linux;
diff --git a/pkgs/applications/science/math/getdp/default.nix b/pkgs/applications/science/math/getdp/default.nix
index 5df35cce8e231..8accf9d76725a 100644
--- a/pkgs/applications/science/math/getdp/default.nix
+++ b/pkgs/applications/science/math/getdp/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = lib.optional mpiSupport "-DENABLE_MPI=1";
 
   meta = with lib; {
-    description = "A General Environment for the Treatment of Discrete Problems";
+    description = "General Environment for the Treatment of Discrete Problems";
     mainProgram = "getdp";
     longDescription = ''
       GetDP is a free finite element solver using mixed elements to discretize
diff --git a/pkgs/applications/science/math/gfan/default.nix b/pkgs/applications/science/math/gfan/default.nix
index 8fa6da16e336b..ee1fce783d265 100644
--- a/pkgs/applications/science/math/gfan/default.nix
+++ b/pkgs/applications/science/math/gfan/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ gmp mpir cddlib ];
 
   meta = {
-    description = "A software package for computing Gröbner fans and tropical varieties";
+    description = "Software package for computing Gröbner fans and tropical varieties";
     license = lib.licenses.gpl2 ;
     maintainers = [lib.maintainers.raskin];
     platforms = lib.platforms.unix;
diff --git a/pkgs/applications/science/math/giac/default.nix b/pkgs/applications/science/math/giac/default.nix
index 0dc12b6dcb050..834ae7b3d61f3 100644
--- a/pkgs/applications/science/math/giac/default.nix
+++ b/pkgs/applications/science/math/giac/default.nix
@@ -125,7 +125,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "A free computer algebra system (CAS)";
+    description = "Free computer algebra system (CAS)";
     homepage = "https://www-fourier.ujf-grenoble.fr/~parisse/giac.html";
     license = licenses.gpl3Plus;
     platforms = platforms.linux ++ (optionals (!enableGUI) platforms.darwin);
diff --git a/pkgs/applications/science/math/glsurf/default.nix b/pkgs/applications/science/math/glsurf/default.nix
index d2ebba75638b9..38caee5805b43 100644
--- a/pkgs/applications/science/math/glsurf/default.nix
+++ b/pkgs/applications/science/math/glsurf/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = "https://raffalli.eu/~christophe/glsurf/";
-    description = "A program to draw implicit surfaces and curves";
+    description = "Program to draw implicit surfaces and curves";
     mainProgram = "glsurf";
     license = lib.licenses.gpl2Plus;
     platforms = lib.platforms.all;
diff --git a/pkgs/applications/science/math/gmsh/default.nix b/pkgs/applications/science/math/gmsh/default.nix
index 0037b722a8fda..3e88e7f94bbe6 100644
--- a/pkgs/applications/science/math/gmsh/default.nix
+++ b/pkgs/applications/science/math/gmsh/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   meta = {
-    description = "A three-dimensional finite element mesh generator";
+    description = "Three-dimensional finite element mesh generator";
     mainProgram = "gmsh";
     homepage = "https://gmsh.info/";
     license = lib.licenses.gpl2Plus;
diff --git a/pkgs/applications/science/math/gretl/default.nix b/pkgs/applications/science/math/gretl/default.nix
index d99a49acd9c62..dc2c62b8ad64c 100644
--- a/pkgs/applications/science/math/gretl/default.nix
+++ b/pkgs/applications/science/math/gretl/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
   enableParallelInstalling = false;
 
   meta = {
-    description = "A software package for econometric analysis";
+    description = "Software package for econometric analysis";
     homepage = "https://gretl.sourceforge.net";
     license = lib.licenses.gpl3;
     longDescription = ''
diff --git a/pkgs/applications/science/math/lp_solve/default.nix b/pkgs/applications/science/math/lp_solve/default.nix
index fdabc8896a582..773f1f3c089e4 100644
--- a/pkgs/applications/science/math/lp_solve/default.nix
+++ b/pkgs/applications/science/math/lp_solve/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "A Mixed Integer Linear Programming (MILP) solver";
+    description = "Mixed Integer Linear Programming (MILP) solver";
     mainProgram = "lp_solve";
     homepage = "https://lpsolve.sourceforge.net";
     license = licenses.gpl2Plus;
diff --git a/pkgs/applications/science/math/mathmod/default.nix b/pkgs/applications/science/math/mathmod/default.nix
index 01dab1dedea2e..dd85d06784922 100644
--- a/pkgs/applications/science/math/mathmod/default.nix
+++ b/pkgs/applications/science/math/mathmod/default.nix
@@ -24,7 +24,7 @@ mkDerivation {
   nativeBuildInputs = [ qmake ];
 
   meta = {
-    description = "A mathematical modelling software";
+    description = "Mathematical modelling software";
     homepage = "https://github.com/parisolab/mathmod";
     license = lib.licenses.gpl2Plus;
     mainProgram = "MathMod";
diff --git a/pkgs/applications/science/math/msieve/default.nix b/pkgs/applications/science/math/msieve/default.nix
index 1de6d416a0e64..bda3e5b3a040a 100644
--- a/pkgs/applications/science/math/msieve/default.nix
+++ b/pkgs/applications/science/math/msieve/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    description = "A C library implementing a suite of algorithms to factor large integers";
+    description = "C library implementing a suite of algorithms to factor large integers";
     mainProgram = "msieve";
     license = lib.licenses.publicDomain;
     homepage = "http://msieve.sourceforge.net/";
diff --git a/pkgs/applications/science/math/palp/default.nix b/pkgs/applications/science/math/palp/default.nix
index 2fe77aa14a650..a3b54b78f99bc 100644
--- a/pkgs/applications/science/math/palp/default.nix
+++ b/pkgs/applications/science/math/palp/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "A Package for Analyzing Lattice Polytopes";
+    description = "Package for Analyzing Lattice Polytopes";
     longDescription = ''
       A Package for Analyzing Lattice Polytopes (PALP) is a set of C
       programs for calculations with lattice polytopes and applications to
diff --git a/pkgs/applications/science/math/pari/gp2c.nix b/pkgs/applications/science/math/pari/gp2c.nix
index 512aaba78d54b..c99c2fed2bd16 100644
--- a/pkgs/applications/science/math/pari/gp2c.nix
+++ b/pkgs/applications/science/math/pari/gp2c.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     homepage = "http://pari.math.u-bordeaux.fr/";
-    description =  "A compiler to translate GP scripts to PARI programs";
+    description =  "Compiler to translate GP scripts to PARI programs";
     downloadPage = "http://pari.math.u-bordeaux.fr/download.html";
     inherit (pari.meta) license maintainers platforms broken;
   };
diff --git a/pkgs/applications/science/math/programmer-calculator/default.nix b/pkgs/applications/science/math/programmer-calculator/default.nix
index 9cb220ceca6a5..cc418feb763dd 100644
--- a/pkgs/applications/science/math/programmer-calculator/default.nix
+++ b/pkgs/applications/science/math/programmer-calculator/default.nix
@@ -20,7 +20,7 @@ gccStdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "A terminal calculator for programmers";
+    description = "Terminal calculator for programmers";
     mainProgram = "pcalc";
     longDescription = ''
       Terminal calculator made for programmers working with multiple number
diff --git a/pkgs/applications/science/math/pspp/default.nix b/pkgs/applications/science/math/pspp/default.nix
index 420b495e736e6..100cb5b9bc056 100644
--- a/pkgs/applications/science/math/pspp/default.nix
+++ b/pkgs/applications/science/math/pspp/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = "https://www.gnu.org/software/pspp/";
-    description = "A free replacement for SPSS, a program for statistical analysis of sampled data";
+    description = "Free replacement for SPSS, a program for statistical analysis of sampled data";
     license = lib.licenses.gpl3Plus;
 
     longDescription = ''
diff --git a/pkgs/applications/science/math/ratpoints/default.nix b/pkgs/applications/science/math/ratpoints/default.nix
index 69b972fe97907..f2aa1aac26079 100644
--- a/pkgs/applications/science/math/ratpoints/default.nix
+++ b/pkgs/applications/science/math/ratpoints/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   preInstall = ''mkdir -p "$out"/{bin,share,lib,include}'';
 
   meta = {
-    description = "A program to find rational points on hyperelliptic curves";
+    description = "Program to find rational points on hyperelliptic curves";
     mainProgram = "ratpoints";
     license = lib.licenses.gpl2Plus;
     maintainers = [lib.maintainers.raskin];
diff --git a/pkgs/applications/science/math/ripser/default.nix b/pkgs/applications/science/math/ripser/default.nix
index 83cf6bc51aa40..3f536f25aa115 100644
--- a/pkgs/applications/science/math/ripser/default.nix
+++ b/pkgs/applications/science/math/ripser/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    description = "A lean C++ code for the computation of Vietoris–Rips persistence barcodes";
+    description = "Lean C++ code for the computation of Vietoris–Rips persistence barcodes";
     mainProgram = "ripser";
     homepage = "https://github.com/Ripser/ripser";
     license = lib.licenses.lgpl3;
diff --git a/pkgs/applications/science/math/singular/default.nix b/pkgs/applications/science/math/singular/default.nix
index d079134aec76d..d1b17eccee23b 100644
--- a/pkgs/applications/science/math/singular/default.nix
+++ b/pkgs/applications/science/math/singular/default.nix
@@ -156,7 +156,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    description = "A CAS for polynomial computations";
+    description = "CAS for polynomial computations";
     maintainers = teams.sage.members;
     # 32 bit x86 fails with some link error: `undefined reference to `__divmoddi4@GCC_7.0.0'`
     # https://www.singular.uni-kl.de:8002/trac/ticket/837
diff --git a/pkgs/applications/science/math/speedcrunch/default.nix b/pkgs/applications/science/math/speedcrunch/default.nix
index a77474b86ffaa..021c1bedc348a 100644
--- a/pkgs/applications/science/math/speedcrunch/default.nix
+++ b/pkgs/applications/science/math/speedcrunch/default.nix
@@ -22,7 +22,7 @@ mkDerivation rec {
   meta = with lib; {
     homepage    = "http://speedcrunch.org";
     license     = licenses.gpl2Plus;
-    description = "A fast power user calculator";
+    description = "Fast power user calculator";
     mainProgram = "speedcrunch";
     longDescription = ''
       SpeedCrunch is a fast, high precision and powerful desktop calculator.
diff --git a/pkgs/applications/science/math/symmetrica/default.nix b/pkgs/applications/science/math/symmetrica/default.nix
index eea34fb778850..d6ec352d32a2f 100644
--- a/pkgs/applications/science/math/symmetrica/default.nix
+++ b/pkgs/applications/science/math/symmetrica/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    description = "A collection of routines for representation theory and combinatorics";
+    description = "Collection of routines for representation theory and combinatorics";
     license = licenses.isc;
     maintainers = teams.sage.members;
     platforms = platforms.unix;
diff --git a/pkgs/applications/science/math/zegrapher/default.nix b/pkgs/applications/science/math/zegrapher/default.nix
index 2beaf5757a550..ffe337efd7db5 100644
--- a/pkgs/applications/science/math/zegrapher/default.nix
+++ b/pkgs/applications/science/math/zegrapher/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     homepage = "https://zegrapher.com/";
-    description = "An open source math plotter";
+    description = "Open source math plotter";
     mainProgram = "ZeGrapher";
     longDescription = ''
       An open source, free and easy to use math plotter. It can plot functions,