Add initial installer

nixos/modules/server.nix

@@ -0,0 +1,22 @@
+{ config, lib, ... }:
+let
+  inherit (lib) mkIf;
+  inherit (lib.my) mkBoolOpt';
+
+  cfg = config.my.server;
+in
+{
+  options.my.server.enable = mkBoolOpt' false "Whether to enable common configuration for servers.";
+  config = mkIf cfg.enable {
+    services = {
+      getty.autologinUser = config.my.user.name;
+      kmscon.autologinUser = config.my.user.name;
+    };
+
+    my.homeConfig = {
+      my.gui.enable = false;
+    };
+  };
+
+  meta.buildDocsInSandbox = false;
+}