anchor.diff:        };
       };
     });
  +  */
   
     haskellPackages_ghc6101 = import ./haskell-packages.nix {
       inherit pkgs;
  
positive.code: 
    #ghc = haskellPackages.ghc;
  
    ghc642Binary = lowPrio (import ../development/compilers/ghc/6.4.2-binary.nix {
      inherit fetchurl stdenv ncurses gmp;
      readline = if stdenv.system == "i686-linux" then readline4 else readline5;
      perl = perl58;
    });
  
    ghc6101Binary = lowPrio (import ../development/compilers/ghc/6.10.1-binary.nix {
      inherit fetchurl stdenv perl ncurses gmp libedit;
  
negative.code: 
    haskellPackages = haskellPackages_ghc6104;
  
    /*
    haskellPackages_ghc642 = import ./haskell-packages.nix {
      inherit pkgs;
      ghc = import ../development/compilers/ghc/6.4.2.nix {
  