config.nix

pkgs : {
    allowUnfree = true;
    packageOverrides = pkgs: rec {
        gccgo49 = pkgs.wrapGCC (pkgs.gcc49.gcc.override {
            name = "gccgo49";
            langCC = true;
            langC = true;
            langGo = true;
        });

        gccgoEnv = pkgs.myEnvFun {
            name = "gccgo";
            shell = "${pkgs.zsh}/bin/zsh";
            
            buildInputs = with pkgs; [
                gccgo49
                valgrind
                go_1_3

                # These packages specific for my go-gmime development
                pkgconfig
                glib
                gmime

            ];
        };
    };
}