feat: init exwm

machines/arcadia/default.nix

@@ -1,9 +1,19 @@
 {
   pkgs,
   inputs,
+  lib,
   ...
 }:
+let
+  emacs-from-overlay = pkgs.emacsWithPackagesFromUsePackage {
+    config = ../../../emacs-config/ReadMe.org;
+    package = pkgs.emacs-igc;
+    alwaysEnsure = true;
+    alwaysTangle = true;
+    extraEmacsPackages = epkgs: [ epkgs.exwm ];
+  };
 
+in
 {
   imports = [
     ./hardware.nix
@@ -82,8 +92,16 @@
 
   programs.ssh.startAgent = true;
 
-  services.xserver.desktopManager.gnome.enable = true;
-  services.xserver.displayManager.gdm.enable = true;
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.xterm.enable = true;
+  services.xserver.enable = true;
+
+  services.xserver.windowManager.session = lib.singleton {
+    name = "exwm";
+    start = ''
+      ${emacs-from-overlay}/bin/emacs -l /home/julien/.emacs.d/exwm-config.el
+    '';
+  };
 
   services.gnome.gnome-keyring.enable = true;
   system.stateVersion = "25.05";

machines/arcadia/home-julien.nix

@@ -38,7 +38,7 @@
         fira-code
         feh
         meld
-        emacs
+        emacs-igc
         vlc
         jftui
         libreoffice
@@ -58,6 +58,10 @@
         signal-desktop
         scli
         texlive.combined.scheme-full
+        unstable.nixd
+        emacs-lsp-booster
+        hunspellDicts.en_US
+        hunspellDicts.fr-moderne
       ]
       ++ builtins.filter lib.attrsets.isDerivation (builtins.attrValues pkgs.nerd-fonts);
     fonts.fontconfig.enable = true;
@@ -68,7 +72,6 @@
 
     home.persistence."/persistent/home/julien" = {
       files = [
-        ".config/gnome-initial-setup-done"
         ".config/background"
         ".cert/nm-openvpn/telecom-paris-ca.pem"
       ];