We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
[Feature Request] Allow @hydra.main() to take a config object and pass it through
# 🚀 Feature Request

Allow @hydra.main() to take a config and pass it through

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `hydra/main.py`
Content:
```
1 # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
2 import functools
3 from typing import Callable, Optional
4 
5 from ._internal.utils import get_args_parser, run_hydra
6 from .types import TaskFunction
7 
8 
9 def main(
10     config_path: Optional[str] = None,
11     config_name: Optional[str] = None,
12     strict: Optional[bool] = None,
13 ) -> Callable[[TaskFunction], Callable[[], None]]:
14     """
15     :param config_path: the config path, a directory relative to the declaring python file.
16     :param config_name: the name of the config (usually the file name without the .yaml extension)
17     :param strict: (Deprecated) strict mode, will throw an error if command line overrides are not changing an
18     existing key or if the code is accessing a non existent key
19     """
20 
21     def main_decorator(task_function: TaskFunction) -> Callable[[], None]:
22         @functools.wraps(task_function)
23         def decorated_main() -> None:
24             run_hydra(
25                 args_parser=get_args_parser(),
26                 task_function=task_function,
27                 config_path=config_path,
28                 config_name=config_name,
29                 strict=strict,
30             )
31 
32         return decorated_main
33 
34     return main_decorator
35
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/hydra/main.py b/hydra/main.py
--- a/hydra/main.py
+++ b/hydra/main.py
@@ -1,6 +1,8 @@
 # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
 import functools
-from typing import Callable, Optional
+from typing import Any, Callable, Optional
+
+from omegaconf import DictConfig
 
 from ._internal.utils import get_args_parser, run_hydra
 from .types import TaskFunction
@@ -10,7 +12,7 @@
     config_path: Optional[str] = None,
     config_name: Optional[str] = None,
     strict: Optional[bool] = None,
-) -> Callable[[TaskFunction], Callable[[], None]]:
+) -> Callable[[TaskFunction], Any]:
     """
     :param config_path: the config path, a directory relative to the declaring python file.
     :param config_name: the name of the config (usually the file name without the .yaml extension)
@@ -20,14 +22,20 @@
 
     def main_decorator(task_function: TaskFunction) -> Callable[[], None]:
         @functools.wraps(task_function)
-        def decorated_main() -> None:
-            run_hydra(
-                args_parser=get_args_parser(),
-                task_function=task_function,
-                config_path=config_path,
-                config_name=config_name,
-                strict=strict,
-            )
+        def decorated_main(cfg_passthrough: Optional[DictConfig] = None) -> Any:
+            if cfg_passthrough is not None:
+                return task_function(cfg_passthrough)
+            else:
+                args = get_args_parser()
+                # no return value from run_hydra() as it may sometime actually run the task_function
+                # multiple times (--multirun)
+                run_hydra(
+                    args_parser=args,
+                    task_function=task_function,
+                    config_path=config_path,
+                    config_name=config_name,
+                    strict=strict,
+                )
 
         return decorated_main

{"golden_diff": "diff --git a/hydra/main.py b/hydra/main.py\n--- a/hydra/main.py\n+++ b/hydra/main.py\n@@ -1,6 +1,8 @@\n # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved\n import functools\n-from typing import Callable, Optional\n+from typing import Any, Callable, Optional\n+\n+from omegaconf import DictConfig\n \n from ._internal.utils import get_args_parser, run_hydra\n from .types import TaskFunction\n@@ -10,7 +12,7 @@\n     config_path: Optional[str] = None,\n     config_name: Optional[str] = None,\n     strict: Optional[bool] = None,\n-) -> Callable[[TaskFunction], Callable[[], None]]:\n+) -> Callable[[TaskFunction], Any]:\n     \"\"\"\n     :param config_path: the config path, a directory relative to the declaring python file.\n     :param config_name: the name of the config (usually the file name without the .yaml extension)\n@@ -20,14 +22,20 @@\n \n     def main_decorator(task_function: TaskFunction) -> Callable[[], None]:\n         @functools.wraps(task_function)\n-        def decorated_main() -> None:\n-            run_hydra(\n-                args_parser=get_args_parser(),\n-                task_function=task_function,\n-                config_path=config_path,\n-                config_name=config_name,\n-                strict=strict,\n-            )\n+        def decorated_main(cfg_passthrough: Optional[DictConfig] = None) -> Any:\n+            if cfg_passthrough is not None:\n+                return task_function(cfg_passthrough)\n+            else:\n+                args = get_args_parser()\n+                # no return value from run_hydra() as it may sometime actually run the task_function\n+                # multiple times (--multirun)\n+                run_hydra(\n+                    args_parser=args,\n+                    task_function=task_function,\n+                    config_path=config_path,\n+                    config_name=config_name,\n+                    strict=strict,\n+                )\n \n         return decorated_main\n", "issue": "[Feature Request] Allow @hydra.main() to take a config object and pass it through\n# \ud83d\ude80 Feature Request\r\n\r\nAllow @hydra.main() to take a config and pass it through\n", "before_files": [{"content": "# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved\nimport functools\nfrom typing import Callable, Optional\n\nfrom ._internal.utils import get_args_parser, run_hydra\nfrom .types import TaskFunction\n\n\ndef main(\n    config_path: Optional[str] = None,\n    config_name: Optional[str] = None,\n    strict: Optional[bool] = None,\n) -> Callable[[TaskFunction], Callable[[], None]]:\n    \"\"\"\n    :param config_path: the config path, a directory relative to the declaring python file.\n    :param config_name: the name of the config (usually the file name without the .yaml extension)\n    :param strict: (Deprecated) strict mode, will throw an error if command line overrides are not changing an\n    existing key or if the code is accessing a non existent key\n    \"\"\"\n\n    def main_decorator(task_function: TaskFunction) -> Callable[[], None]:\n        @functools.wraps(task_function)\n        def decorated_main() -> None:\n            run_hydra(\n                args_parser=get_args_parser(),\n                task_function=task_function,\n                config_path=config_path,\n                config_name=config_name,\n                strict=strict,\n            )\n\n        return decorated_main\n\n    return main_decorator\n", "path": "hydra/main.py"}], "after_files": [{"content": "# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved\nimport functools\nfrom typing import Any, Callable, Optional\n\nfrom omegaconf import DictConfig\n\nfrom ._internal.utils import get_args_parser, run_hydra\nfrom .types import TaskFunction\n\n\ndef main(\n    config_path: Optional[str] = None,\n    config_name: Optional[str] = None,\n    strict: Optional[bool] = None,\n) -> Callable[[TaskFunction], Any]:\n    \"\"\"\n    :param config_path: the config path, a directory relative to the declaring python file.\n    :param config_name: the name of the config (usually the file name without the .yaml extension)\n    :param strict: (Deprecated) strict mode, will throw an error if command line overrides are not changing an\n    existing key or if the code is accessing a non existent key\n    \"\"\"\n\n    def main_decorator(task_function: TaskFunction) -> Callable[[], None]:\n        @functools.wraps(task_function)\n        def decorated_main(cfg_passthrough: Optional[DictConfig] = None) -> Any:\n            if cfg_passthrough is not None:\n                return task_function(cfg_passthrough)\n            else:\n                args = get_args_parser()\n                # no return value from run_hydra() as it may sometime actually run the task_function\n                # multiple times (--multirun)\n                run_hydra(\n                    args_parser=args,\n                    task_function=task_function,\n                    config_path=config_path,\n                    config_name=config_name,\n                    strict=strict,\n                )\n\n        return decorated_main\n\n    return main_decorator\n", "path": "hydra/main.py"}]}