self: super: {
  cgit = self.callPackage ./cgit { inherit (super) cgit; };

  dino = self.callPackage ./dino { inherit (super) dino; };

  firefoxPackages = self.callPackage ./firefox/packages.nix {
    inherit (super) firefoxPackages;
  };

  public-inbox = self.callPackage ./public-inbox {
    inherit (super) public-inbox;
  };

  python3 = self.callPackage ./python { python = super.python3; };

  tmux = self.callPackage ./tmux { inherit (super) tmux; };
}