emacs: use nix-community overlay

flake.lock

@@ -1,5 +1,26 @@
 {
   "nodes": {
+    "emacs-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1659638214,
+        "narHash": "sha256-lXa01G06Ey9qgj+rYN7Nzc53FP3p2UMMnAuxpWXu9Ko=",
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "rev": "a151f9ff5b9fa813ac8918f3a3a67c643e7e2edc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "type": "github"
+      }
+    },
     "fenix": {
       "inputs": {
         "nixpkgs": [
@@ -22,6 +43,21 @@
       }
     },
     "flake-utils": {
+      "locked": {
+        "lastModified": 1656928814,
+        "narHash": "sha256-RIFfgBuKz6Hp89yRr7+NR5tzIAbn52h8vT6vXkYjZoM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "7e2a3b3dfd9af950a856d66b0a7d01e3c18aa249",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
       "locked": {
         "lastModified": 1653893745,
         "narHash": "sha256-0jntwV3Z8//YwuOjzhV2sgJJPt+HY6KhU7VZUL0fKZQ=",
@@ -38,7 +74,7 @@
     },
     "microvm": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "flake-utils": "flake-utils_2",
         "nixpkgs": [
           "nixpkgs"
         ]
@@ -107,6 +143,7 @@
     },
     "root": {
       "inputs": {
+        "emacs-overlay": "emacs-overlay",
         "fenix": "fenix",
         "microvm": "microvm",
         "nixpkgs": "nixpkgs",

flake.nix

@@ -14,10 +14,15 @@
       url = github:nix-community/fenix;
       inputs.nixpkgs.follows = "nixpkgs-unstable";
     };
+    emacs-overlay = {
+      url = github:nix-community/emacs-overlay;
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+    };
   };
 
   outputs =
     inputs@{ self
+    , emacs-overlay
     , nixpkgs
     , nixpkgs-unstable
     , sops-nix
@@ -35,6 +40,7 @@
             ./modules/basic-tools.nix
             ./modules/binary-caches.nix
             ./modules/chromium.nix
+            ./modules/emacs.nix
             ./modules/gnupg.nix
             ./modules/graphical.nix
             ./modules/hw-accel-intel.nix
@@ -42,6 +48,9 @@
             ./modules/radio.nix
             ./modules/science.nix
             ./modules/tlp.nix
+            {
+              nixpkgs.overlays = [ emacs-overlay.overlay ];
+            }
             ({ pkgs, ... }: {
               nixpkgs.overlays = [ fenix.overlay ];
               environment.systemPackages = with pkgs; [

modules/emacs.nix

@@ -1,20 +1,24 @@
-{ lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   environment.systemPackages = with pkgs; [
-    # language servers
+    direnv
-    clang-tools
-    clang
-
-    sqlite
-    graphviz
   ];
 
+  programs.zsh.shellInit = ''
+    eval "$(direnv hook zsh)"
+  '';
+  programs.bash.shellInit = ''
+    eval "$(direnv hook bash)"
+  '';
+
+
   services.emacs = {
     install = true;
     enable = false;
-    # pure gtk, native compiled emacs with vterm and pdf-tools
+    package = with pkgs; ((emacsPackagesFor emacsPgtkNativeComp).emacsWithPackages (epkgs: with epkgs; [
-    package = with pkgs; ((emacsPackagesFor emacs).emacsWithPackages (epkgs: [ epkgs.vterm ]));
+      vterm
+    ]));
     defaultEditor = false;
   };