Use emacs-overlay to install Emacs

- we use the bleeding edge emacs master branch so beware when updating

- revision fb1cdbb0a12d7f0e0e50022c405aca7c856dd233 of emacs-overlay
  seems to work quite well.

home/cli.nix

@@ -43,7 +43,6 @@
     #haskellPackages.patat # terminal based presentations using pandoc
 
     # editors
-    emacs28NativeComp
     sqlite
 
     # c/c++
@@ -101,6 +100,12 @@
       enableBashIntegration = true;
     };
 
+    emacs = {
+      enable = true;
+      package = pkgs.emacsGit;
+      #package = pkgs.emacsUnstable;
+    };
+
     gh = {
       enable = true;
       settings.git_protocol = "ssh";