Adding GAP discrete algebra system

svn path=/nixpkgs/trunk/; revision=32908

pkgs/applications/science/math/gap/default.nix

@@ -0,0 +1,54 @@
+x@{builderDefsPackage
+  
+  , ...}:
+builderDefsPackage
+(a :  
+let 
+  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
+    [];
+
+  buildInputs = map (n: builtins.getAttr n x)
+    (builtins.attrNames (builtins.removeAttrs x helperArgNames));
+  sourceInfo = rec {
+    baseName="gap";
+    version="4r4p12";
+    name="${baseName}-${version}";
+    url="ftp://ftp.gap-system.org/pub/gap/gap4/tar.gz/${baseName}${version}.tar.gz";
+    hash="0flap5lbkvpms3zznq1zwxyxyj0ax3fk7m24f3bvhvr37vyxnf40";
+  };
+in
+rec {
+  src = a.fetchurl {
+    url = sourceInfo.url;
+    sha256 = sourceInfo.hash;
+  };
+
+  inherit (sourceInfo) name version;
+  inherit buildInputs;
+
+  /* doConfigure should be removed if not needed */
+  phaseNames = ["doConfigure" "doMake" "doDeploy"];
+
+  doDeploy = a.fullDepEntry ''
+    ensureDir "$out/bin" "$out/share/gap/"
+
+    cp -r . "$out/share/gap/build-dir"
+
+    sed -e "/GAP_DIR=/aGAP_DIR='$out/share/gap/build-dir/'" -i "$out/share/gap/build-dir/bin/gap.sh" 
+
+    ln -s "$out/share/gap/build-dir/bin/gap.sh" "$out/bin"
+  '' ["doMake" "minInit" "defEnsureDir"];
+      
+  meta = {
+    description = "Computational discrete algebra system";
+    maintainers = with a.lib.maintainers;
+    [
+      raskin
+    ];
+    platforms = with a.lib.platforms;
+      linux;
+    license = "GPLv2+";
+    homepage = "http://gap-system.org/";
+  };
+}) x
+

pkgs/top-level/all-packages.nix

@@ -8292,6 +8292,8 @@ let
 
   eukleides = callPackage ../applications/science/math/eukleides { };
 
+  gap = callPackage ../applications/science/math/gap { };
+
   maxima = callPackage ../applications/science/math/maxima { };
 
   wxmaxima = callPackage ../applications/science/math/wxmaxima { };