{
  callPackage,
  mastodon,
  patches ? [],
}:
let 
  src = callPackage ./source.nix {
    inherit patches;
  };

  yarn-deps = callPackage ./yarn.nix {
    inherit src;
    hash = src.yarnHash;
  };

  nyastodon = mastodon.override {
    pname = "nyastodon";
    srcOverride = src;
    gemset = ./gemset.nix;
  };

  modules = callPackage ./modules.nix {
    inherit nyastodon yarn-deps;
  };
in
  nyastodon.overrideAttrs (_: {
    mastodonModules = modules;
  })