anchor.diff:    };
     glib_0_13_0_5 = callPackage ../development/libraries/haskell/glib/0.13.0.5.nix {
       glib = pkgs.glib;
  -    libc = pkgs.stdenv.cc.libc;
  +    libc = pkgs.stdenv.gcc.libc;
     };
     glib = self.glib_0_13_0_5;
   
  
positive.code: 
    pango_0_12_5_3 = callPackage ../development/libraries/haskell/pango/0.12.5.3.nix {
      inherit (pkgs) pango;
      libc = pkgs.stdenv.cc.libc;
      glib = self.glib_0_12_5_4;
      cairo = self.cairo_0_12_5_3;
    };
  
negative.code:   };
    cairo_0_13_0_4 = callPackage ../development/libraries/haskell/cairo/0.13.0.4.nix {
      inherit (pkgs) cairo zlib;
      libc = pkgs.stdenv.gcc.libc;
    };
    cairo = self.cairo_0_13_0_4;
  
  