Minor build improvements

Not sure if the features come from the new nixos-rebuild but good this
simplifies things.

hm/rebuild/default.nix

@@ -5,6 +5,9 @@
     (pkgs.writeShellApplication {
       name = "rb";
       text = ''
+        info() {
+            echo -e '\033[1;34m'"$*"'\033[0m'
+        }
         verb="switch"
         if [ "$#" -ge 1 ]
         then
@@ -14,7 +17,9 @@
         nixos_flake="$(readlink -f /etc/nixos)"
         if [ -f "$nixos_flake/flake.nix" ]
         then
+          info "Updating local flakes"
           update-local-flakes "$nixos_flake"
+          info "Starting script"
           nix run "$nixos_flake#nixosRebuild" -- "$verb" "$@"
         fi
         # TODO Fix nix-on-droid and home-manager