anchor.diff:  
   edk2 = buildStdenv.mkDerivation {
     pname = "edk2";
  -  version = "202108";
  +  version = "202202";
   
     # submodules
     src = fetchFromGitHub {
  
positive.code: 
    meta = with lib; {
      description = "Intel EFI development kit";
      homepage = "https://sourceforge.net/projects/edk2/";
      license = licenses.bsd2;
      platforms = [ "x86_64-linux" "i686-linux" "aarch64-linux" "x86_64-darwin" ];
    };
  
negative.code:     repo = "edk2";
      rev = "edk2-stable${edk2.version}";
      fetchSubmodules = true;
      sha256 = "0srmhi6c27n5vyl01nhh0fq8k4vngbwn79siyjvcacjbj2ivhh8d";
    };
  
    buildInputs = [ libuuid pythonEnv ];
  
  