emacs-flake/flake.nix

{
  description = "My emacs Flake";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    emacs-overlay.url = "github:nix-community/emacs-overlay";
    emacs-config = {
      url = "github:larstvei/dot-emacs";
      flake = false;
    };
    emacs-plus = {
      url = "github:d12frosted/homebrew-emacs-plus";
      flake = false;
    };
  };

  outputs =
    { self, nixpkgs, flake-utils, emacs-overlay, emacs-plus, emacs-config }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays =
            [ emacs-overlay.overlays.emacs emacs-overlay.overlays.package ];
        };
        patched-emacs = (pkgs.emacs-git).overrideAttrs (o: {
          patches = [
            "${emacs-plus}/patches/emacs-31/fix-window-role.patch"
            "${emacs-plus}/patches/emacs-31/poll.patch"
            "${emacs-plus}/patches/emacs-31/round-undecorated-frame.patch"
            "${emacs-plus}/patches/emacs-31/system-appearance.patch"
          ];
        });

      in {
        defaultPackage = pkgs.emacsWithPackagesFromUsePackage {
          config = "${emacs-config}/init.org";
          package = patched-emacs;
          defaultInitFile = true;
          alwaysEnsure = true;
          alwaysTangle = true;
          extraEmacsPackages = epkgs:
            [ epkgs.treesit-grammars.with-all-grammars ];
        };
      });
}