Making GPL Ghostscript use the system libraries (libjpeg, libpng, ...) so

the previous troubles with a mixture of libpng versions fade away.

I also enable back GPL Ghostscript as the default.

I checked that 'awesome' builds fine (it calls imagemagick for some pictures in
its build script), as a proof that imagemagick does not crash anymore.


svn path=/nixpkgs/trunk/; revision=32958

pkgs/misc/ghostscript/default.nix

@@ -48,6 +48,10 @@ let
       homepage = http://www.ghostscript.com/;
       description = "GPL Ghostscript, a PostScript interpreter";
     };
+
+    preConfigure = ''
+      rm -R libpng jpeg lcms tiff freetype
+    '';
     patches = [ ./purity-9.05.patch ];
   };
 
@@ -85,7 +89,7 @@ stdenv.mkDerivation rec {
 
     # Don't install stuff in the Cups store path.
     makeFlagsArray=(CUPSSERVERBIN=$out/lib/cups CUPSSERVERROOT=$out/etc/cups CUPSDATA=$out/share/cups)
-  '';
+  '' + stdenv.lib.optionalString (variant ? preConfigure) variant.preConfigure;
 
   configureFlags =
     (if x11Support then [ "--with-x" ] else [ "--without-x" ]) ++

pkgs/top-level/all-packages.nix

@@ -8392,7 +8392,7 @@ let
   ghostscript = callPackage ../misc/ghostscript {
     x11Support = false;
     cupsSupport = getConfig [ "ghostscript" "cups" ] true;
-    gnuFork = getConfig [ "ghostscript" "gnu" ] true;
+    gnuFork = getConfig [ "ghostscript" "gnu" ] false;
   };
 
   ghostscriptX = appendToName "with-X" (ghostscript.override {