anchor.diff:    postPatch = ''
       chmod +x meson/meson_post_install.py
       patchShebangs meson/meson_post_install.py
  +    patchShebangs data/gen_locations_variant.py
     '';
   
     passthru = {
  
positive.code:     docbook_xml_dtd_43
      gobject-introspection
      python3
    ];
  
    buildInputs = [
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "libgweather";
    version = "40.0";
  
    outputs = [ "out" "dev" "devdoc" ];
  
    src = fetchurl {
      url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
      sha256 = "1rkf4yv43qcahyx7bismdv6z2vh5azdnm1fqfmnzrada9cm8ykna";
    };
  
    nativeBuildInputs = [
  