This repository provides nightly automated builds of Emacs from HEAD for macOS Nix environments with the following additions:

• Native Compilation (gccemacs)
• X Widgets (Webkit) support
• libvterm
• Patched window role to work nicely with yabai

The no-titlebar frame patch has been removed, as it can be implemented with pure Emacs Lisp by putting the following early on during initialization (e.g. in early-init.el):

(add-to-list 'default-frame-alist '(undecorated . t))

See d12frosted/homebrew-emacs-plus#433 (comment) for further background.

To use this flake on your system, add it to your configuration inputs & overlays.
It overlays the pkgs.emacs package.
There is a complimentary binary cache available which is pushed to nightly.

{
  inputs.darwin.url = "github:lnl7/nix-darwin";
  inputs.emacs.url = "github:cmacrae/emacs";

  outputs = { self, darwin, emacs }: {
    darwinConfigurations.example = darwin.lib.darwinSystem {
      modules = [
        {
          nix.binaryCaches = [
            "https://cachix.org/api/v1/cache/emacs"
          ];

          nix.binaryCachePublicKeys = [
            "emacs.cachix.org-1:b1SMJNLY/mZF6GxQE+eDBeps7WnkT0Po55TAyzwOxTY="
          ];

          nixpkgs.overlays = [
            emacs.overlay
          ];
        }
      ];
    };
  };
}