diff --git a/pkgs/clan-cli/clan_cli/machines/install.py b/pkgs/clan-cli/clan_cli/machines/install.py
index 14644705..07098adb 100644
--- a/pkgs/clan-cli/clan_cli/machines/install.py
+++ b/pkgs/clan-cli/clan_cli/machines/install.py
@@ -38,6 +38,8 @@ def install_nixos(
 
         cmd = [
             "nixos-anywhere",
+            "--debug",
+            "--copy-password",
             "--flake",
             f"{machine.flake}#{machine.name}",
             "--no-reboot",
@@ -54,7 +56,7 @@ def install_nixos(
 
         run(
             nix_shell(
-                ["nixpkgs#nixos-anywhere"],
+                ["nixpkgs#sshpass", "/home/kenji/git/nix-projects/nixos-anywhere"],
                 cmd,
             ),
             log=Log.BOTH,
@@ -117,6 +119,18 @@ def register_install_parser(parser: argparse.ArgumentParser) -> None:
     parser.add_argument(
         "target_host",
         type=str,
+        nargs="?",
         help="ssh address to install to in the form of user@host:2222",
     )
+    group = parser.add_mutually_exclusive_group(required=False)
+    group.add_argument(
+        "-j",
+        "--json",
+        help="specify the json file for ssh data (generated by starting the clan installer)",
+    )
+    group.add_argument(
+        "-P",
+        "--png",
+        help="specify the json file for ssh data as the qrcode image (generated by starting the clan installer)",
+    )
     parser.set_defaults(func=install_command)