anchor.diff:  , pkg-config
   , meson
   , ninja
  -, git
   , vala
   , glib
   , zlib
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "gcab";
    version = "1.4";
  
    outputs = [ "bin" "out" "dev" "devdoc" "installedTests" ];
  
    src = fetchurl {
      url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
      sha256 = "13q43iqld4l50yra45lhvkd376pn6qpk7rkx374zn8y9wsdzm9b7";
    };
  
    patches = [
  
negative.code:   nativeBuildInputs = [
      meson
      ninja
      pkg-config
      vala
      gettext
  