final: prev: {
  widevine-installer = prev.callPackage ./widevine-installer.nix {};
  widevine = prev.callPackage ./widevine.nix {};
  firefox-wv = prev.firefox.override (old: {
    extraPrefsFiles = ["${final.widevine-installer}/conf/gmpwidevine.js"];
  });
  # Thanks https://github.com/auvred/nixos-config/blob/df45668785adb931641a48121e554d3b45c3f7bd/overlays/lemurs/default.nix
  # The latest published version (0.3.2) doesn't contain a following patches:
  # - https://github.com/coastalwhite/lemurs/commit/ef4b42de1391f3d35d7827130d20bc57d06198f9
  # - https://github.com/coastalwhite/lemurs/commit/849e7cea87f3567be7cec403a2a603b8370e351c
  lemurs = prev.lemurs.override {
    rustPlatform.buildRustPackage = args:
      final.rustPlatform.buildRustPackage (args
        // {
          patches = [];
          src = prev.fetchFromGitHub {
            owner = "coastalwhite";
            repo = "lemurs";
            rev = "1d4be7d0c3f528a0c1e9326ac77f1e8a17161c83";
            hash = "sha256-t/riJpgy0bD5CU8Zkzket4Gks2JXXSLRreMlrxlok0c=";
          };
          cargoHash = "sha256-hKeJaIGUZpbuca3IPN1Uq4bamgImfYNvCRiVDbriHPA=";
        });
  };
}