anchor.diff: -{ lib, stdenv
  +{ stdenv
  +, lib
   , fetchFromGitHub
   , nixosTests
   , substituteAll
  
positive.code:     owner = "flatpak";
      repo = pname;
      rev = version;
      sha256 = "sha256-tuRKCBj9ELC7yFPs/Sut/EdO+L8nwW3S8NWU+XedAF8=";
    };
  
    patches = [
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "xdg-desktop-portal";
    version = "1.10.1";
  
    outputs = [ "out" "installedTests" ];
  
  