anchor.diff:  { stdenv
   , lib
   , fetchFromGitLab
  -, fetchpatch
   , pkg-config
   , vala
   , glib
  
positive.code:     owner = "GNOME";
      repo = "gnome-online-accounts";
      rev = version;
      sha256 = "sha256-1FqOJ+nKQdK5r2fP7oAvh1LfG+T1S1NSJ+9kNZ5I76Q=";
    };
  
    patches = [
      # https://gitlab.gnome.org/GNOME/gnome-online-accounts/-/merge_requests/95
      (fetchpatch {
        url = "https://gitlab.gnome.org/GNOME/gnome-online-accounts/-/commit/2da899c48795e9941661f3eb06fc4fc04ec7b0fa.patch";
        sha256 = "5qDiKnX9gx7eo//Qxa0+M9rsFKpg8dplA3IUZHuacmA=";
      })
    ];
  
    mesonFlags = [
      "-Dfedora=false" # not useful in NixOS or for NixOS users.
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-online-accounts";
    version = "3.45.2";
  
    outputs = [ "out" "man" "dev" "devdoc" ];
  
  