jikespg: Cleanup

pkgs/development/tools/parsing/jikespg/builder.sh

···
-source $stdenv/setup
-
-set -e
-
-configurePhase() {
-  tar zxvf $src 
-  cd jikespg/src
-}
-
-installPhase() {
-  mkdir -p $out/bin
-  cp jikespg $out/bin
-}
-
-genericBuild

pkgs/development/tools/parsing/jikespg/default.nix

···
 
 stdenv.mkDerivation {
   name = "jikespg-1.3";
-  builder = ./builder.sh;
+
   src = fetchurl {
     url = mirror://sourceforge/jikes/jikespg-1.3.tar.gz;
     md5 = "eba183713d9ae61a887211be80eeb21f";
+  };
+
+  sourceRoot = "jikespg/src";
+
+  installPhase =
+    ''
+      mkdir -p $out/bin
+      cp jikespg $out/bin
+    '';
+
+  meta = {
+    homepage = http://jikes.sourceforge.net/;
+    description = "The Jikes Parser Generator";
   };
 }