pkgs:
(pkgs.matrix-synapse.override {
  extras = [
    "redis"
    "cache-memory"
    "postgres"
    "url-preview"
    "user-search"
  ];
  matrix-synapse-unwrapped =
    pkgs.matrix-synapse-unwrapped.overridePythonAttrs (old: {
      patches = (old.patches or []) ++ [
        ((pkgs.fetchurl {
          url = "https://patch-diff.githubusercontent.com/raw/matrix-org/synapse/pull/16504.patch";
          hash = "sha256-hjUOmsl06gVPewRdg/DyO9E5bSkIRNBAFJIrWqUsT6Y=";
        }) // {
          requiredSystemFeatures = [ "local" ];
        })
      ];
    });
})