emacs: move config to separate git repo

modules/home/emacs/default.nix

@@ -20,16 +20,55 @@ config, ... }:
 
 with lib;
 
-let cfg = config.modules.emacs;
+let
+  cfg = config.modules.emacs;
+  doomRepoUrl = "https://github.com/doomemacs/doomemacs";
+  configRepoUrl = "https://gitlab.julian-mutter.de/julian/emacs-config";
 in {
   options.modules.emacs = { enable = mkOption { default = false; }; };
 
   config = mkIf cfg.enable {
-    home.file = {
-      ".config/doom" = {
-        source = ./doom;
-        recursive = false;
-      };
+    home.packages = with pkgs; [
+      emacs
+      binutils # native-comp needs 'as', provided by this
+
+      ## Doom dependencies
+      git
+      (ripgrep.override { withPCRE2 = true; })
+
+      ## Optional dependencies
+      fd # faster projectile indexing
+      imagemagick # for image-dired
+      zstd # for undo-fu-session/undo-tree compression
+
+      ## Module dependencies
+      (aspellWithDicts (ds: with ds; [ en en-computers en-science de ]))
+      sqlite
+
+      # Code formatters for use with doom emacs
+      nixfmt # nix
+      dockfmt # docker
+      google-java-format # java
+      black # python
+      rustfmt # rust
+      shfmt
+
+      graphviz
+      # Lsps for use with doom emacs
+      # neocmakelsp # cmake
+
+      emacs-all-the-icons-fonts
+    ];
+
+    home.activation = {
+      installDoomEmacs = ''
+        if [ ! -d "~/.config/emacs" ]; then
+           ${pkgs.git}/bin/git clone --depth=1 --single-branch "${doomRepoUrl}" "~/.config/emacs"
+        fi
+        if [ ! -d "~/.config/doom" ]; then
+           ${pkgs.git}/bin/git clone "${configRepoUrl}" "~/.config/doom"
+        fi
+      '';
     };
   };
 }