Initial commit

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system/modules/emacs.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+with lib;
+{
+  options.programs.emacs.useGit = mkOption {
+    description = "Use emacs from git";
+    type = types.bool;
+    default = false;
+  };
+
+  config = {
+    nixpkgs.overlays = if config.programs.emacs.useGit then [] else [
+      (import (builtins.fetchTarball https://github.com/nix-community/emacs-overlay/archive/master.tar.gz))
+    ];
+
+    environment.systemPackages = with pkgs; [
+      (if config.programs.emacs.useGit then emacsGit else emacs)
+      ripgrep
+      coreutils
+      fd
+      clang
+    ];
+  };
+}