home/natto/emacs: add direnv and misc changes

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

home/natto/services.nix

@@ -6,7 +6,9 @@ in
   services = {
     baremacs = {
       enable = true;
-      package = pkgs.mymacs ./config/emacs/config.org;
+      package = pkgs.mymacs.override {
+        config = ./config/emacs/config.org;
+      };
       defaultEditor = {
         enable = false;
         editor = "emacsclient";