anchor.diff:      libsoup
     ];
   
  -  configureFlags = [
  -    "--disable-maintainer-mode"
  +  mesonFlags = [
  +    "-Dexamples=false"
     ];
  +
  +  setVapidirInstallFlag = false;
   
     passthru = {
       srcVerification = fetchurl {
  
positive.code: , vala
  }:
  
  let
    major = "1.0";
    version = "${major}.2";
  in
  stdenv.mkDerivation rec {
    name = "gssdp-${version}";
  
    src = fetchurl {
      url = "mirror://gnome/sources/gssdp/${major}/${name}.tar.xz";
      hashOutput = false;
      sha256 = "a1e17c09c7e1a185b0bd84fd6ff3794045a3cd729b707c23e422ff66471535dc";
    };
  
    nativeBuildInputs = [
      vala
    ];
  
  
negative.code: { stdenv
  , fetchurl
  , lib
  , meson
  , ninja
  
  , glib
  , gobject-introspection
  