anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "libxmlb";
  -  version = "0.3.7";
  +  version = "0.3.8";
   
     outputs = [ "out" "lib" "dev" "devdoc" "installedTests" ];
   
  
positive.code:     owner = "hughsie";
      repo = "libxmlb";
      rev = version;
      sha256 = "sha256-ZzA1YJYxTR91X79NU9dWd11Ze+PX2wuZeumuEuNdC48=";
    };
  
    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 = [
      docbook_xml_dtd_43
      docbook_xsl
      gobject-introspection
      gtk-doc
      meson
  
negative.code: { stdenv
  , lib
  , fetchFromGitHub
  , docbook_xml_dtd_43
  , docbook-xsl-nons
  , glib
  , gobject-introspection
  , gtk-doc
  