gistfile1.txt

  config = {
    # Override packages.
    nixpkgs.config = {
      packageOverrides = super: let self = super.pkgs; in
      {
        # Haskell packages.
        haskell = super.haskell // {
          packages = super.haskell.packages // {
            ghc7103 = super.haskell.packages.ghc7103.override {
              overrides = self: super: {
                # overrides
                amazonka             = pkgs.haskell.lib.dontCheck (self.callPackage ./overrides/amazonka.nix {});
                amazonka-core        = pkgs.haskell.lib.dontCheck (self.callPackage ./overrides/amazonka-core.nix {});
                amazonka-s3          = pkgs.haskell.lib.dontCheck (self.callPackage ./overrides/amazonka-s3.nix {});
                amazonka-ses         = pkgs.haskell.lib.dontCheck (self.callPackage ./overrides/amazonka-ses.nix {});
                amazonka-swf         = pkgs.haskell.lib.dontCheck (self.callPackage ./overrides/amazonka-swf.nix {});
                amazonka-test        = pkgs.haskell.lib.dontCheck (self.callPackage ./overrides/amazonka-test.nix {});
                ini                  = pkgs.haskell.lib.dontCheck (self.callPackage ./overrides/ini.nix {});