anchor.diff:  stdenv.mkDerivation rec {
     pname = "rest";
     version = "0.8.1";
  +
  +  outputs = [ "out" "dev" ];
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  
positive.code:     gobject-introspection
    ];
  
    buildInputs = [
      glib
      libsoup
    ];
  
    configureFlags = [
  
negative.code: , pkg-config
  , glib
  , libsoup
  , libxml2
  , gobject-introspection
  , gnome
  }:
  