anchor.diff:  
     patches = [
       ./installed-tests-path.patch
  +    # Fix darwin build, can be removed on next release
  +    # `--version-script` isn't supported by the macOS linker
  +    # https://github.com/hughsie/libxmlb/pull/119
  +    (fetchpatch {
  +      url = "https://github.com/hughsie/libxmlb/commit/d83aac5bd78cfbbfa2ecd428ff54b811071dfe4d.patch";
  +      sha256 = "sha256-UNRMbyNzdxfTZ8xV6J8a622hPnr3mowooP1q8Dg19yw=";
  +    })
     ];
   
     nativeBuildInputs = [
  
positive.code: { stdenv
  , lib
  , fetchFromGitHub
  , docbook_xml_dtd_43
  , docbook_xsl
  , glib
  
negative.code:     homepage = "https://github.com/hughsie/libxmlb";
      license = licenses.lgpl21Plus;
      maintainers = with maintainers; [ jtojnar ];
      platforms = platforms.unix;
    };
  }
  