complete creating run command

src/argenta/_cli/commands/run.py

@@ -1,10 +1,10 @@
 __all__ = ["run_handler"]
 
 import importlib
+import sys
+from pathlib import Path
 from typing import Any
 
-from argenta import App, Orchestrator
-
 
 class ImportFromStringError(Exception):
     pass
@@ -20,9 +20,7 @@ def import_from_string(import_str: str) -> Any:
     try:
         module = importlib.import_module(module_str)
     except ModuleNotFoundError as exc:
-        if exc.name != module_str:
-            raise exc from None
-        raise ImportFromStringError(f'Could not import module "{module_str}".')
+        raise ImportFromStringError(f'Could not import module "{module_str}".') from exc
 
     instance = module
     try:
@@ -34,29 +32,13 @@ def import_from_string(import_str: str) -> Any:
     return instance
 
 
-def run_handler(orchestrator_str: str, app_str: str | None = None) -> Any:
-    orchestrator = import_from_string(orchestrator_str)
+def run_handler(entry_point: str) -> None:
+    if str(Path.cwd()) not in sys.path:
+        sys.path.insert(0, str(Path.cwd()))
 
-    if not isinstance(orchestrator, Orchestrator):
-        raise TypeError(f"Not an Orchestrator: {type(orchestrator).__name__}")
+    runner = import_from_string(entry_point)
 
-    if app_str is not None:
-        app = import_from_string(app_str)
-    else:
-        module_str = orchestrator_str.partition(":")[0]
-        module = importlib.import_module(module_str)
+    if not callable(runner):
+        raise TypeError(f'"{entry_point}" is not callable')
 
-        app = None
-        for attr_name in dir(module):
-            attr = getattr(module, attr_name)
-            if isinstance(attr, App):
-                app = attr
-                break
-
-        if app is None:
-            raise ValueError(f'No App instance found in module "{module_str}"')
-
-    if not isinstance(app, App):
-        raise TypeError(f"Not an App: {type(app).__name__}")
-
-    return orchestrator.start_polling(app)
+    runner()

src/argenta/orchestrator/entity.py

@@ -13,7 +13,7 @@ DEFAULT_ARGPARSER: ArgParser = ArgParser(processed_args=[])
 class Orchestrator:
     def __init__(
         self,
-        arg_parser: ArgParser = DEFAULT_ARGPARSER,
+        arg_parser: ArgParser | None = None,
         custom_providers: list[Provider] | None = None,
         auto_inject_handlers: bool = True,
     ):
@@ -22,11 +22,12 @@ class Orchestrator:
         :param arg_parser: Cmd argument parser and configurator at startup
         :return: None
         """
-        self._arg_parser: ArgParser = arg_parser
+        self._arg_parser: ArgParser | None = arg_parser
         self._custom_providers: list[Provider] = custom_providers or []
         self._auto_inject_handlers: bool = auto_inject_handlers
 
-        self._arg_parser._parse_args()  # pyright: ignore[reportPrivateUsage]
+        if self._arg_parser is not None:
+            self._arg_parser._parse_args()
 
     def start_polling(self, app: App) -> None:
         """