pkgs/cli: Add completions to clan flakes create --template [TEMPLATE]

Add completions to `clan flakes create --template [TEMPLATE]`

pkgs/clan-cli/clan_cli/clan/create.py

@@ -6,11 +6,13 @@ from pathlib import Path
 from clan_lib.clan.create import CreateOptions, create_clan
 from clan_lib.errors import ClanError
 
+from clan_cli.completions import add_dynamic_completer, complete_templates_clan
+
 log = logging.getLogger(__name__)
 
 
 def register_create_parser(parser: argparse.ArgumentParser) -> None:
-    parser.add_argument(
+    template_action = parser.add_argument(
         "--template",
         type=str,
         help="""Reference to the template to use for the clan. default="default". In the format '<flake_ref>#template_name' Where <flake_ref> is a flake reference (e.g. github:org/repo) or a local path (e.g. '.' ).
@@ -18,6 +20,7 @@ def register_create_parser(parser: argparse.ArgumentParser) -> None:
         """,
         default="default",
     )
+    add_dynamic_completer(template_action, complete_templates_clan)
 
     parser.add_argument(
         "--no-git",

pkgs/clan-cli/clan_cli/completions.py

@@ -269,6 +269,26 @@ def complete_templates_disko(
     return []
 
 
+def complete_templates_clan(
+    prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
+) -> Iterable[str]:
+    """
+    Provides completion functionality for clan templates
+    """
+
+    from clan_lib.templates import list_templates
+
+    flake = clan_dir_result if (clan_dir_result := clan_dir(None)) is not None else "."
+
+    list_all_templates = list_templates(Flake(flake))
+    clan_template_list = list_all_templates.builtins.get("clan")
+    if clan_template_list:
+        clan_templates = list(clan_template_list)
+        clan_dict = dict.fromkeys(clan_templates, "clan")
+        return clan_dict
+    return []
+
+
 def complete_target_host(
     prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
 ) -> Iterable[str]: