config.nix

{
  stdenv = { pkgs }: pkgs.stdenv //
  {
    mkDerivation = args: pkgs.stdenv.mkDerivation (args //
    {
      makeFlags = (if ( args ? makeFlags && args.makeFlags != null )
      then args.makeFlags else []) ++ ["-j8" "-l8"];
    });
  };

  allowUnfree = true;
  packageOverrides = pkgs: with (import ./docker_compose.nix {inherit pkgs;}); rec {
    sqlite = pkgs.sqlite.override{interactive=true;};
    pythonOverride = pkgs.python.override{includeModules=true;};
    updateFile = pkgs.writeText "$out/bin/upd"
    ''
      #!/usr/bin/env bash
      nix-env -i all
    '';
    myVirtualBox = pkgs.stdenv.lib.overrideDerivation
                   pkgs.linuxPackages.virtualbox (oldAttrs: {
      extensionPack = pkgs.fetchurl {
        url = "http://download.virtualbox.org/virtualbox/${pkgs.linuxPackages.virtualbox.version}/Oracle_VM_VirtualBox_Extension_Pack-${pkgs.linuxPackages.virtualbox.version}-104815.vbox-extpack";
        sha256 = "0v933g6sk1akfm48xwdd0z61164by7llj8974lriipvz5d2wh6xc";
      };
    });
    all = pkgs.buildEnv {
      name = "all";
      paths = with pkgs; [
        pythonOverride sqlite lxappearance
        bundler_HEAD ruby docker wpsoffice
        imagemagick parallel python3 neovim
        myVirtualBox docker_compose
        scrot pythonPackages.udiskie udisks2
        i3lock
      ];
    };
  };
}