anchor.diff:          outputHash
           outputHashAlgo
           urls;
  -      sha256Url = "https://download.gnome.org/sources/gssdp/${major}/"
  -        + "${name}.sha256sum";
  +      fullOpts = {
  +        sha256Urls =
  +          map (u: lib.replaceStrings ["tar.xz"] ["sha256sum"] u) src.urls;
  +      };
         failEarly = true;
       };
     };
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       description = "GObject-based API for resource discovery over SSDP";
       homepage = https://wiki.gnome.org/Projects/GUPnP;
       license = licenses.lgpl2;
  
positive.code: { stdenv
  , fetchurl
  
  , glib
  , gobject-introspection
  
negative.code:     libsoup
    ];
  
    mesonFlags = [
      "-Dexamples=false"
    ];
  
    setVapidirInstallFlag = false;
  
    passthru = {
      srcVerification = fetchurl {
  