anchor.diff:      libgee
       libgphoto2
       libgudev
  +    libhandy
       libraw
       librest
       libsoup
  
positive.code:     owner = "elementary";
      repo = repoName;
      rev = version;
      sha256 = "sha256-bTk4shryAWWMrKX3mza6xQ05qpBPf80Ey7fmYgKLUiY=";
    };
  
    patches = [
      # Fix build with latest Vala.
      (fetchpatch {
        url = "https://github.com/elementary/photos/commit/27e529fc96da828982563e2e19a6f0cef883a29e.patch";
        sha256 = "w39wh45VHggCs62TN6wpUEyz/hJ1y7qL1Ox+sp0Pt2s=";
      })
    ];
  
    passthru = {
      updateScript = nix-update-script {
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "elementary-photos";
    version = "2.7.1";
  
    repoName = "photos";
  
  