anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "elementary-photos";
  -  version = "2.7.2";
  +  version = "2.7.3";
   
     repoName = "photos";
   
  
positive.code: { lib, stdenv
  , fetchFromGitHub
  , fetchpatch
  , nix-update-script
  , pantheon
  , meson
  
negative.code:     owner = "elementary";
      repo = repoName;
      rev = version;
      sha256 = "sha256-ja4ElW0FNm9oNyn+00SdI2Cxep6LyWTYM8Blc6bnuiY=";
    };
  
    nativeBuildInputs = [
      appstream
  