nixos-rebuild, nixos-rebuild-ng: print the store path that was built

pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/__init__.py

@@ -502,6 +502,9 @@ def execute(argv: list[str]) -> None:
                         specialisation=args.specialisation,
                         install_bootloader=args.install_bootloader,
                     )
+                    print_result("Done. The new configuration is", path_to_config)
+                case Action.BUILD:
+                    print_result("Done. The new configuration is", path_to_config)
                 case Action.BUILD_VM | Action.BUILD_VM_WITH_BOOTLOADER:
                     # If you get `not-found`, please open an issue
                     vm_path = next(path_to_config.glob("bin/run-*-vm"), "not-found")

pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh

@@ -949,7 +949,13 @@ if [[ "$action" = switch || "$action" = boot || "$action" = test || "$action" =
     if ! targetHostSudoCmd "${cmd[@]}" "$action"; then
         log "warning: error(s) occurred while switching to the new configuration"
         exit 1
+    else
+        echo -n "Done. The new configuration is " >&2
+        echo "$pathToConfig"
     fi
+elif [[ "$action" = build ]]; then
+    echo -n "Done. The new configuration is " >&2
+    echo "$pathToConfig"
 fi