add emacs to microwave

flake.lock

@@ -1,5 +1,28 @@
 {
   "nodes": {
+    "emacs-overlay": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1664390640,
+        "narHash": "sha256-oV7ERAZzzHh//ewzUliQAUpITg6z0BPQk6MrPo/U9bA=",
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "rev": "5a0d13e02555d20144d34fb8c9af4900fe55ce06",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "type": "github"
+      }
+    },
     "fenix": {
       "inputs": {
         "nixpkgs": [
@@ -122,6 +145,7 @@
     },
     "root": {
       "inputs": {
+        "emacs-overlay": "emacs-overlay",
         "fenix": "fenix",
         "flake-utils": "flake-utils",
         "microvm": "microvm",

flake.nix

@@ -20,6 +20,12 @@
       url = github:nix-community/fenix;
       inputs.nixpkgs.follows = "nixpkgs-unstable";
     };
+
+    emacs-overlay = {
+      url = github:nix-community/emacs-overlay;
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+      inputs.flake-utils.follows = "flake-utils";
+    };
   };
 
   outputs =
@@ -27,6 +33,7 @@
     , nixpkgs
     , nixpkgs-unstable
     , flake-utils
+    , emacs-overlay
     , sops-nix
     , microvm
     , fenix
@@ -56,6 +63,7 @@
             ./hosts/microwave
             ./modules/basic-tools.nix
             ./modules/binary-caches.nix
+            ./modules/emacs.nix
             ./modules/gnupg.nix
             ./modules/graphical.nix
             ./modules/hw-accel-intel.nix
@@ -68,6 +76,7 @@
               nixpkgs.overlays = [
                 fenix.overlay
                 self.overlays.default
+                emacs-overlay.overlay
               ];
               environment.systemPackages = with pkgs; [
                 (fenix.packages."x86_64-linux".stable.withComponents [