* Install the package config files under

$out/lib/ghc-pkgs/ghc-<version>/<package>.conf instead of under
  $out/nix-support/ghc-package.conf.  This makes them visible in the
  user's profile when installed with nix-env.

svn path=/nixpkgs/trunk/; revision=15135

pkgs/development/libraries/haskell/cabal/cabal.nix

@@ -79,8 +79,9 @@ attrs :
 
               ./Setup copy
 
-              ensureDir $out/nix-support              
-              ./Setup register --gen-pkg-config=$out/nix-support/ghc-package.conf
+              local confDir=$out/lib/ghc-pkgs/ghc-${attrs.ghc.ghc.version}
+              ensureDir $confDir
+              ./Setup register --gen-pkg-config=$confDir/${self.fname}.conf
               
               eval "$postInstall"
             '';