anchor.diff:      platforms = with platforms;
         x86_64-linux;
     };
  -}+}
  
positive.code:     version = 1;
      owner = "gnome-mpv";
      repo = "gnome-mpv";
      rev = "2b96f085038eadb45d57f122048d4c54a32fab5f";
      sha256 = "b5fa7402878566e9889dfb3dc1863a7e2af17986c2c8d8644a177c3d5a00b7f3";
    };
  
    nativeBuildInputs = [
  
negative.code:   inherit (stdenv.lib)
      boolEn;
  
    version = "2016-08-31";
  in
  stdenv.mkDerivation rec {
    name = "gnome-mpv-${version}";
  