diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 228a68f4d23..5a4a849df42 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1003,6 +1003,8 @@ rec {
     profiledCompiler = true;
   });
 
+  /* doesn't work yet
+
   # This new ghc stuff is under heavy development and might change ! 
 
   # usage: see ghcPkgUtil.sh - use setup-new2 because of PATH_DELIMITER
@@ -1031,7 +1033,7 @@ rec {
     ghc : let
     deriv = name : goSrcDir : deps : 
       let bd = builderDefs {
-          goSrcDir = "ghc-*/libraries";
+          goSrcDir = "ghc-* /libraries";
           src = ghc.extra_src;
         } null; in
       stdenv.mkDerivation rec {
@@ -1066,6 +1068,8 @@ rec {
       inherit ghc;
   };
 
+  */
+
   # ghc66boot = import ../development/compilers/ghc-6.6-boot {
   #  inherit fetchurl stdenv perl readline;
   #  m4 = gnum4;