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ROLLOUT 3 · facebookresearch/hydra

facebookresearch__hydra-273

Not solved
471 stotal time
22tool calls
22model calls
4,175tokens generated
194,111prompt tokens read

Test failures/errors recorded in JUnit XML (failures=2, errors=0)

Turn by turn

Token shading: p ≥ 0.9 0.5 – 0.9 0.2 – 0.5 below 0.2. Hover a token for its id and probability.

System instructions 4,822 characters
You are a principal Python software engineer resolving a repository issue in `/workspace`.
Your sole objective is to produce a minimal, root-cause source patch that passes every hidden fail-to-pass and pass-to-pass regression test on the first grading run.

## Critical Environment & Grader Rules
1. **Air-Gapped Sandbox & Available CLI Tools**: No network access. Never run `pip`, `uv`, `conda`, or `git fetch`. Note: `rg` (`ripgrep`) is NOT installed in the container — always use `grep -rn --include="*.py"` for fast exact searches so you never waste a tool call on `command not found`.
2. **Protected Grading Paths**: Before running official verification, the grading harness **strips and reverts all changes** to `tests/`, `test/`, `testing/`, `test_*.py`, `*_test.py`, `conftest.py`, `pyproject.toml`, `setup.cfg`, `pytest.ini`, and `tox.ini`. Every part of your fix MUST reside in non-test production source files.
3. **Untracked File Trap (`git add -N .`)**: `submit_patch` stages ALL untracked files inside `/workspace`! Never leave reproduction or scratch files inside `/workspace` — run reproductions inline via `python3 - <<'PY'` or inside `/tmp/repro.py` in a single `run_command`.
4. **Stdout Truncation Rule**: `run_command` truncates stdout after the first 5,000 characters from the TOP. Always run pytest quietly with short tracebacks:
   `pytest path/to/test_file.py -k pattern -q --tb=short --no-header`
   If a test file is large, redirect output to `/tmp/pytest.log` and inspect `tail -n 80 /tmp/pytest.log` so failure tracebacks at the bottom are never cut off.
5. **Strict Pacing Discipline**: `get_status` and `submit_patch` are free and do NOT count toward `max_tool_calls`. Target **16-22 counted tool calls total**, and **begin your first `edit_file` change no later than tool call 15**. Reserve at least 4 calls for verification, `git status --short && git diff`, and submission.

## Execution Protocol

### Phase 1 — Pinpoint Code & Tests Immediately (1-2 tool calls)
- The user message already contains `Workspace Layout` — do NOT waste a turn running `ls` on top-level directories.
- Run a single compound `run_command` with `grep -rn --include="*.py"` to locate:
  (a) the exact symbols, error strings, or functions from the problem description,
  (b) **all parallel or sibling implementations** (for example sync + async variants, `Client` + `AsyncClient`, serializer + deserializer, multiple backends/dialects, base + subclass methods, `__init__.py` / `__all__` exports), and
  (c) the closest existing unit test files under `tests/`.

### Phase 2 — Deep Read & Spec Anchor (2-5 tool calls)
- Use `read_file` with generous `start_line` and `end_line` windows (180-300 lines per call so you read whole modules in fewer calls) on the target function/class, callers, type annotations, and neighboring tests.
- Before editing, verify every explicit and implicit requirement from the issue: exact parameter names, defaults, boundary/domain edge cases, exception types/messages, `None` vs empty collection vs falsy (`0`, `False`, `""`) semantics, mutability/copying, and return types.

### Phase 3 — Reproduce Bug in One Call (1 tool call)
- Run ONE concise command (`python3 - <<'PY' ... PY` or targeted `pytest ... -q --tb=short --no-header`) via `run_command` to observe the exact pre-fix failure. Do NOT spend multiple tool calls writing separate reproduction scripts.

### Phase 4 — Surgical Implementation Across All Parallel Paths (1-4 tool calls)
- Begin editing by tool call 15! Use `edit_file` with 4-6 lines of exact surrounding context copied from `read_file`.
- Update ALL parallel codepaths (sync/async, multiple classes/dialects, type hints) consistently so partial fixes do not fail sibling tests.
- **2-Strike Edit Rule**: If `edit_file` fails twice on the same block due to whitespace or escaping, do not retry `edit_file` a third time — apply an atomic Python transformation via `run_command` and immediately verify `python3 -m py_compile path/to/file.py`.

### Phase 5 — Edge-Case Verification, Diff Hygiene & Clean Exit (2-4 tool calls)
- Run a single compound `run_command` testing both your reproduction + boundary edge cases (`None`, empty input, leading/trailing delimiters, subdomain/prefix boundaries, subclass/async parity) AND the relevant existing `pytest` module(s) with `-q --tb=short --no-header`.
- Run `git status --short && git diff` via `run_command`. Confirm:
  - ZERO untracked (`??`) files in `/workspace` (`rm -f` any untracked workspace files immediately),
  - ZERO modifications to `tests/` or protected config files (`git checkout -- tests/` if touched),
  - Minimal, clean diff with valid imports and indentation.
- Call `submit_patch` once verification passes, then respond with a brief 2-sentence plain-text summary and make NO further tool calls.
Task prompt 6,076 characters
You are evaluating a software engineering task for repository facebookresearch/hydra.

Problem Statement:
[Bug] handle yaml file with dot in the name
# 🐛 Bug

<!-- A clear and concise description of what the bug is. -->
When creating yaml file that has dot in the base name, `config_loader.py` erroneously misses the `.yaml` extension which results in a `hydra.errors.MissingConfigException`.

## To reproduce
configuration groups:
```
├── conf
│   └── lr
│       ├── 0.1.yaml
│       └── 0.01.yaml
└── my_app.py
```
with minimum `my_app.py` setup same as in the tutorial
```
python my_app.py lr=0.1
```
Traceback:
```
Traceback (most recent call last):
  File "app.py", line 9, in <module>
    app()
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/main.py", line 24, in decorated_main
    strict=strict,
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/_internal/utils.py", line 56, in run_hydra
    hydra.run(overrides=args.overrides)
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/_internal/hydra.py", line 103, in run
    cfg = self._load_config(overrides)
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/_internal/hydra.py", line 345, in _load_config
    cfg = self.config_loader.load_configuration(overrides)
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/_internal/config_loader.py", line 56, in load_configuration
    cfg = self._merge_defaults(hydra_cfg, defaults, split_at)
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/_internal/config_loader.py", line 395, in _merge_defaults
    cfg = merge_defaults(cfg, user_list)
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/_internal/config_loader.py", line 374, in merge_defaults
    required=not is_optional,
  File "/home/yjxiao/miniconda3/lib/python3.7/site-packages/hydra/_internal/config_loader.py", line 301, in _merge_config
    raise MissingConfigException(msg, new_cfg, options)
hydra.errors.MissingConfigException: Could not load lr/0.1, available options:
lr:
	0.01
	0.1
```
## Questions
- Currently, I have to edit `config_loader.py` file to add the `.yaml` extension whenever it is missing. Would this cause any unwanted behavior with other features? 
- Is it generally not advisable to name config files with, say, float values? Are there better ways to incorporate float values in the config?

## Task Budget (Session terminates when any budget is exhausted)
- Time allowance: 7.5 minutes
- Tool calls allowance: 30 calls
- Max loop iterations: 40 turns

## Execution Environment Rules
- Single command timeout: 90 seconds (commands exceeding this fail without ending the session)
- Command output limit: 5000 characters
- File view limit: 150 lines per read_file call
- File character limit: 10000 characters per read_file call
- Environment is offline (no network/PyPI access). All repository and test dependencies are ALREADY pre-installed. Do NOT attempt to run pip install or download packages.

## Instructions:
0. All source code is under `/workspace`. Do NOT search outside `/workspace` (e.g. `/usr/`, `/wheels/`, system site-packages). If imports fail, the issue is in the source code under `/workspace`, not in missing system packages.
1. Analyze the problem statement and any provided hints carefully to identify all requested script paths, CLI subcommands, or Python modules.
2. Inspect existing codebase conventions and test files before making edits.
3. Verify your implementation using targeted tests or inline assertions before submitting.
4. Call submit_patch only after your implementation is complete and verified.
5. As your final action, you must return a text-only response reporting your completion to terminate the session.
## Workspace Layout
The repository is located at `/workspace`. Here is the directory tree (up to 3 levels):
```
./ATTRIBUTION
./ATTRIBUTION/LICENSE-sample-namespace-packages
./ATTRIBUTION/README.md
./CHANGELOG.md
./CODE_OF_CONDUCT.md
./CONTRIBUTING.md
./LICENSE
./MANIFEST.in
./NEWS.rst
./README.md
./examples
./hydra
./hydra/__init__.py
./hydra/_internal
./hydra/_internal/__init__.py
./hydra/_internal/config_loader.py
./hydra/_internal/config_search_path.py
./hydra/_internal/core_plugins
./hydra/_internal/hydra.py
./hydra/_internal/pathlib.py
./hydra/_internal/plugins.py
./hydra/_internal/utils.py
./hydra/conf
./hydra/conf/__init__.py
./hydra/conf/hydra
./hydra/conf/hydra.yaml
./hydra/errors.py
./hydra/main.py
./hydra/plugins
./hydra/plugins/__init__.py
./hydra/plugins/common
./hydra/plugins/completion_plugin.py
./hydra/plugins/launcher.py
./hydra/plugins/plugin.py
./hydra/plugins/search_path_plugin.py
./hydra/plugins/step_sweeper.py
./hydra/plugins/sweeper.py
./hydra/test_utils
./hydra/test_utils/__init__.py
./hydra/test_utils/a_module.py
./hydra/test_utils/completion.py
./hydra/test_utils/configs
./hydra/test_utils/launcher_common_tests.py
./hydra/test_utils/test_utils.py
./hydra/utils.py
./news
./news/251.docs
./news/251.feature
./news/254.feature
./news/261.bugfix
./news/266.bugfix
./news/53.plugin
./news/_template.rst
./noxfile.py
./plugins
./plugins/examples
./plugins/examples/example_launcher
./plugins/examples/example_plugin
./plugins/hydra_colorlog
./plugins/hydra_colorlog/MANIFEST.in
./plugins/hydra_colorlog/README.md
./plugins/hydra_colorlog/example
./plugins/hydra_colorlog/hydra_plugins
./plugins/hydra_colorlog/setup.py
./plugins/hydra_colorlog/tests
./pyproject.toml
./pytest.ini
./setup.py
./tests
./website
./website/README.md
./website/docs
./website/docs/advanced
./website/docs/configure_hydra
./website/docs/development
./website/docs/getting_started.md
./website/docs/index.html
./website/docs/intro.md
./website/docs/patterns
./website/docs/plugins
./website/docs/tutorial
./website/docusaurus.config.js
./website/package.json
./website/sidebars.js
./website/src
./website/src/components
./website/src/css
./website/src/pages
./website/static
./website/static/CNAME
./website/static/img
./website/static/plugins
./website/yarn.lock
```
Turn 1at 48 s342 tokens out3,991 prompt tokens
The user is reporting a bug where Hydra fails to load YAML config files that have dots in their filenames (e.g., `0.1.yaml`).
The error is `hydra.errors.MissingConfigException`.
The problem seems to be in `hydra/_internal/config_loader.py`.

Looking at the traceback:
`hydra/_internal/config_loader.py`, line 56, in `load_configuration` -> `_merge_defaults` -> `merge_defaults` -> `_merge_config` -> `MissingConfigException`.

The traceback suggests that when Hydra tries to load `lr=0.1`, it looks for `lr/0.1` and cannot find it, even though `lr/0.1.yaml` exists.

Let's start by reproducing this.
TOOL CALL · run_command
{
  "command": "mkdir -p conf/lr\ntouch conf/lr/0.1.yaml conf/lr/0.01.yaml\ncat <<'PY' > my_app.py\nimport hydra\nfrom omegaconf import DictConfig\n\n@hydra.main(config_path=\"conf\", config_name=\"config\")\ndef my_app(cfg: DictConfig) -> None:\n    print(cfg)\n\nif __name__ == \"__main__\":\n    my_app()\nPY\ncat <<'YAML' > conf/config.yaml\ndefaults:\n  - lr: 0.01\nYAML\npython3 my_app.py lr=0.1\n"
}
Result of run_command 547 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "Traceback (most recent call last):\n  File \"my_app.py\", line 4, in <module>\n    @hydra.main(config_path=\"conf\", config_name=\"config\")\nTypeError: main() got an unexpected keyword argument 'config_name'\n",
  "details": {
    "stdout": "",
    "stderr": "Traceback (most recent call last):\n  File \"my_app.py\", line 4, in <module>\n    @hydra.main(config_path=\"conf\", config_name=\"config\")\nTypeError: main() got an unexpected keyword argument 'config_name'\n",
    "exit_code": 1
  }
}
Generated tokens 342 tokens · stopped: STOP
<|channel>thought The user is reporting a bug where Hydra fails to load YAML config files that have dots in their filenames (e.g., `0.1.yaml`). The error is `hydra.errors.MissingConfigException`. The problem seems to be in `hydra/_internal/config_loader.py`. Looking at the traceback: `hydra/_internal/config_loader.py`, line 56, in `load_configuration` -> `_merge_defaults` -> `merge_defaults` -> `_merge_config` -> `MissingConfigException`. The traceback suggests that when Hydra tries to load `lr=0.1`, it looks for `lr/0.1` and cannot find it, even though `lr/0.1.yaml` exists. Let's start by reproducing this.<channel|><|tool_call>call:run_command{command:<|"|>mkdir -p conf/lr touch conf/lr/0.1.yaml conf/lr/0.01.yaml cat <<'PY' > my_app.py import hydra from omegaconf import DictConfig @hydra.main(config_path="conf", config_name="config") def my_app(cfg: DictConfig) -> None: print(cfg) if __name__ == "__main__": my_app() PY cat <<'YAML' > conf/config.yaml defaults: - lr: 0.01 YAML python3 my_app.py lr=0.1 <|"|>}<tool_call|><|tool_response>
Turn 2at 56 s76 tokens out4,517 prompt tokens
Ah, it seems `hydra.main` does not take `config_name` as a keyword argument in the version installed here. I should check the Hydra API for the current version.

Looking at the `hydra/main.py` might help.
TOOL CALL · read_file
{
  "filepath": "hydra/main.py"
}
Result of read_file 1,208 characters
{
  "status": "ok",
  "filepath": "hydra/main.py",
  "content": "# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved\nimport functools\nimport sys\nfrom ._internal.utils import run_hydra, get_args_parser\n\n\ndef main(config_path=\"\", strict=None):\n    \"\"\"\n    :param config_path: the config path, can be a directory in which it's used as the config root\n    or a file to load\n    :param strict: strict mode, will throw an error if command line overrides are not changing an\n    existing key or\n           if the code is accessing a non existent key\n    \"\"\"\n\n    def main_decorator(task_function):\n        @functools.wraps(task_function)\n        def decorated_main():\n            try:\n                run_hydra(\n                    args_parser=get_args_parser(),\n                    task_function=task_function,\n                    config_path=config_path,\n                    strict=strict,\n                )\n            except KeyboardInterrupt:\n                sys.exit(-1)\n            except SystemExit:\n                pass\n\n        return decorated_main\n\n    return main_decorator",
  "start_line": 1,
  "end_line": 33,
  "total_lines": 33,
  "is_truncated": false
}
Generated tokens 76 tokens · stopped: STOP
Ah, it seems `hydra.main` does not take `config_name` as a keyword argument in the version installed here. I should check the Hydra API for the current version. Looking at the `hydra/main.py` might help. <channel|><|tool_call>call:read_file{filepath:<|"|>hydra/main.py<|"|>}<tool_call|><|tool_response>
Turn 3at 76 s379 tokens out4,936 prompt tokens
Okay, `hydra.main` only takes `config_path` and `strict`.
By default, it probably looks for `config.yaml` if no config name is provided? Or maybe `config_path` can be the file path.

Wait, usually `hydra.main` uses a default config file if not specified.
Let's check `hydra/_internal/utils.py` to see how `run_hydra` is called.

Actually, if I want to use a specific config name, I might have to use it in the override.
The problem description says:
```
python my_app.py lr=0.1
```
And they have:
```
├── conf
│   └── lr
│       ├── 0.1.yaml
│       └── 0.01.yaml
└── my_app.py
```
They probably have a `config.yaml` in `conf/`.

Let's try again with the correct `hydra.main` call.
TOOL CALL · run_command
{
  "command": "mkdir -p conf/lr\ntouch conf/lr/0.1.yaml conf/lr/0.01.yaml\ncat <<'PY' > my_app.py\nimport hydra\nfrom omegaconf import DictConfig\n\n@hydra.main(config_path=\"conf\")\ndef my_app(cfg: DictConfig) -> None:\n    print(cfg)\n\nif __name__ == \"__main__\":\n    my_app()\nPY\ncat <<'YAML' > conf/config.yaml\ndefaults:\n  - lr: 0.01\nYAML\npython3 my_app.py lr=0.1\n"
}
Result of run_command 2,461 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "Traceback (most recent call last):\n  File \"my_app.py\", line 9, in <module>\n    my_app()\n  File \"/workspace/hydra/main.py\", line 24, in decorated_main\n    strict=strict,\n  File \"/workspace/hydra/_internal/utils.py\", line 56, in run_hydra\n    hydra.run(overrides=args.overrides)\n  File \"/workspace/hydra/_internal/hydra.py\", line 103, in run\n    cfg = self._load_config(overrides)\n  File \"/workspace/hydra/_internal/hydra.py\", line 345, in _load_config\n    cfg = self.config_loader.load_configuration(overrides)\n  File \"/workspace/hydra/_internal/config_loader.py\", line 56, in load_configuration\n    cfg = self._merge_defaults(hydra_cfg, defaults, split_at)\n  File \"/workspace/hydra/_internal/config_loader.py\", line 402, in _merge_defaults\n    cfg = merge_defaults(cfg, user_list)\n  File \"/workspace/hydra/_internal/config_loader.py\", line 381, in merge_defaults\n    required=not is_optional,\n  File \"/workspace/hydra/_internal/config_loader.py\", line 308, in _merge_config\n    raise MissingConfigException(msg, new_cfg, options)\nhydra.errors.MissingConfigException: Could not load lr/0.1, available options:\nlr:\n\t0.1\n\t0.01\n",
  "details": {
    "stdout": "",
    "stderr": "Traceback (most recent call last):\n  File \"my_app.py\", line 9, in <module>\n    my_app()\n  File \"/workspace/hydra/main.py\", line 24, in decorated_main\n    strict=strict,\n  File \"/workspace/hydra/_internal/utils.py\", line 56, in run_hydra\n    hydra.run(overrides=args.overrides)\n  File \"/workspace/hydra/_internal/hydra.py\", line 103, in run\n    cfg = self._load_config(overrides)\n  File \"/workspace/hydra/_internal/hydra.py\", line 345, in _load_config\n    cfg = self.config_loader.load_configuration(overrides)\n  File \"/workspace/hydra/_internal/config_loader.py\", line 56, in load_configuration\n    cfg = self._merge_defaults(hydra_cfg, defaults, split_at)\n  File \"/workspace/hydra/_internal/config_loader.py\", line 402, in _merge_defaults\n    cfg = merge_defaults(cfg, user_list)\n  File \"/workspace/hydra/_internal/config_loader.py\", line 381, in merge_defaults\n    required=not is_optional,\n  File \"/workspace/hydra/_internal/config_loader.py\", line 308, in _merge_config\n    raise MissingConfigException(msg, new_cfg, options)\nhydra.errors.MissingConfigException: Could not load lr/0.1, available options:\nlr:\n\t0.1\n\t0.01\n",
    "exit_code": 1
  }
}
Generated tokens 379 tokens · stopped: STOP
Okay, `hydra.main` only takes `config_path` and `strict`. By default, it probably looks for `config.yaml` if no config name is provided? Or maybe `config_path` can be the file path. Wait, usually `hydra.main` uses a default config file if not specified. Let's check `hydra/_internal/utils.py` to see how `run_hydra` is called. Actually, if I want to use a specific config name, I might have to use it in the override. The problem description says: ``` python my_app.py lr=0.1 ``` And they have: ``` ├── conf │ └── lr │ ├── 0.1.yaml │ └── 0.01.yaml └── my_app.py ``` They probably have a `config.yaml` in `conf/`. Let's try again with the correct `hydra.main` call. <channel|><|tool_call>call:run_command{command:<|"|>mkdir -p conf/lr touch conf/lr/0.1.yaml conf/lr/0.01.yaml cat <<'PY' > my_app.py import hydra from omegaconf import DictConfig @hydra.main(config_path="conf") def my_app(cfg: DictConfig) -> None: print(cfg) if __name__ == "__main__": my_app() PY cat <<'YAML' > conf/config.yaml defaults: - lr: 0.01 YAML python3 my_app.py lr=0.1 <|"|>}<tool_call|><|tool_response>
Turn 4at 88 s182 tokens out6,184 prompt tokens
Success! I have reproduced the bug.
The error is: `hydra.errors.MissingConfigException: Could not load lr/0.1, available options: lr: 0.1 0.01`.
It's interesting that `0.1` is listed as an available option, but it cannot load `lr/0.1`.

The traceback points to `hydra/_internal/config_loader.py`, line 308 in `_merge_config`.

Let's examine `hydra/_internal/config_loader.py`. I'll read around line 308 and also earlier parts of the file.
TOOL CALL · read_file
{
  "end_line": 450,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 250
}
Result of read_file 6,464 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                    \"{}/{}\".format(path, group_name)\n                )\n                if self._exists(is_pkg, path) and resource_isdir(\n                    module_name, resource_name\n                ):\n                    all_files = resource_listdir(module_name, resource_name)\n                    files = []\n                    for file in all_files:\n                        if (\n                            file_type == \"dir\"\n                            and resource_isdir(\n                                module_name, os.path.join(group_name, file)\n                            )\n                            and file != \"__pycache__\"\n                        ):\n                            files.append(file)\n                        elif file_type == \"file\" and file.endswith(\".yaml\"):\n                            files.append(file[0 : -len(\".yaml\")])\n            else:\n                group_path = \"{}/{}\".format(path, group_name)\n                if os.path.isdir(group_path):\n                    all_files = os.listdir(group_path)\n                    files = []\n                    for file in all_files:\n                        full_path = os.path.join(group_path, group_name, file)\n                        if (\n                            file_type == \"dir\"\n                            and os.path.isdir(full_path)\n                            and file != \"__pycache__\"\n                        ):\n                            files.append(file)\n                        elif file_type == \"file\" and file.endswith(\".yaml\"):\n                            files.append(file[0 : -len(\".yaml\")])\n\n            options.extend(files)\n        return options\n\n    def _merge_config(self, cfg, family, name, required):\n\n        if family != \"\":\n            new_cfg = \"{}/{}\".format(family, name)\n        else:\n            new_cfg = name\n\n        loaded_cfg = self._load_config_impl(new_cfg)\n        if loaded_cfg is None:\n            if required:\n                if family == \"\":\n                    msg = \"Could not load {}\".format(new_cfg)\n                    raise MissingConfigException(msg, new_cfg)\n                else:\n                    options = self.get_group_options(family)\n                    if options:\n                        msg = \"Could not load {}, available options:\\n{}:\\n\\t{}\".format(\n                            new_cfg, family, \"\\n\\t\".join(options)\n                        )\n                    else:\n                        msg = \"Could not load {}\".format(new_cfg)\n                    raise MissingConfigException(msg, new_cfg, options)\n            else:\n                return cfg\n\n        else:\n            return OmegaConf.merge(cfg, loaded_cfg)\n\n        assert False\n\n    @staticmethod\n    def _split_module_and_resource(filename):\n        sep = filename.find(\"/\")\n        if sep == -1:\n            module_name = filename\n            resource_name = \"\"\n        else:\n            module_name = filename[0:sep]\n            resource_name = filename[sep + 1 :]\n        if module_name == \"\":\n            # if we have a module a module only, dirname would return nothing and basename would return the module.\n            module_name = resource_name\n            resource_name = \"\"\n\n        return module_name, resource_name\n\n    @staticmethod\n    def _exists(is_pkg, filename):\n        if is_pkg:\n            module_name, resource_name = ConfigLoader._split_module_and_resource(\n                filename\n            )\n            try:\n                ret = resource_exists(module_name, resource_name)\n            except ImportError:\n                ret = False\n            except ValueError:  # Python 2.7 throws ValueError empty module name sometimes.\n                ret = False\n            except NotImplementedError:\n                raise NotImplementedError(\n                    \"Unable to load {}/{}, are you missing an __init__.py?\".format(\n                        module_name, resource_name\n                    )\n                )\n            # Uncomment to debug issues with configs not getting loaded.\n            # WARNING: breaks integration tests that relies on specified output from the process.\n            # print(\"_exists? {}, {} == {}\".format(module_name, resource_name, ret))\n            return ret\n        else:\n            return os.path.exists(filename)\n\n    def _merge_defaults(self, cfg, defaults, split_at):\n        def get_filename(config_name):\n            filename, ext = os.path.splitext(config_name)\n            if ext == \"\":\n                ext = \".yaml\"\n            return \"{}{}\".format(filename, ext)\n\n        def merge_defaults(merged_cfg, def_list):\n            cfg_with_list = OmegaConf.create(dict(defaults=def_list))\n            for default1 in cfg_with_list.defaults:\n                if isinstance(default1, DictConfig):\n                    is_optional = False\n                    if default1.optional is not None:\n                        is_optional = default1.optional\n                        del default1[\"optional\"]\n                    family = next(iter(default1.keys()))\n                    name = default1[family]\n                    # Name is none if default value is removed\n                    if name is not None and \"_SKIP_\" not in name:\n                        merged_cfg = self._merge_config(\n                            cfg=merged_cfg,\n                            family=family,\n                            name=get_filename(name),\n                            required=not is_optional,\n                        )\n                else:\n                    assert isinstance(default1, str)\n                    if \"_SKIP_\" not in default1:\n                        merged_cfg = self._merge_config(\n                            cfg=merged_cfg,\n                            family=\"\",\n                            name=get_filename(default1),\n                            required=True,\n                        )\n            return merged_cfg\n\n        system_list = []\n        user_list = []\n        for default in defaults:\n            if len(system_list) < split_at:\n                system_list.append(default)\n            else:",
  "start_line": 250,
  "end_line": 399,
  "total_lines": 453,
  "is_truncated": true
}
Generated tokens 182 tokens · stopped: STOP
Success! I have reproduced the bug. The error is: `hydra.errors.MissingConfigException: Could not load lr/0.1, available options: lr: 0.1 0.01`. It's interesting that `0.1` is listed as an available option, but it cannot load `lr/0.1`. The traceback points to `hydra/_internal/config_loader.py`, line 308 in `_merge_config`. Let's examine `hydra/_internal/config_loader.py`. I'll read around line 308 and also earlier parts of the file. <channel|><|tool_call>call:read_file{filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:250,end_line:450}<tool_call|><|tool_response>
Turn 5at 124 s403 tokens out7,874 prompt tokens
Wait, I see something interesting in `_merge_defaults`:

```python
    def _merge_defaults(self, cfg, defaults, split_at):
        def get_filename(config_name):
            filename, ext = os.path.splitext(config_name)
            if ext == "":
                ext = ".yaml"
            return "{}{}".format(filename, ext)
```

And it's used here:

```python
                    # Name is none if default value is removed
                    if name is not None and "_SKIP_" not in name:
                        merged_cfg = self._merge_config(
                            cfg=merged_cfg,
                            family=family,
                            name=get_filename(name),
                            required=not is_optional,
                        )
```

If `name` is `"0.1"`, `os.path.splitext("0.1")` will return `('0', '.1')`.
Then `ext` is `'.1'`, which is not `""`.
So `get_filename("0.1")` returns `"0.1"`.
Then `_merge_config` is called with `name="0.1"` and `family="lr"`.
`new_cfg` becomes `"lr/0.1"`.
Then `self._load_config_impl("lr/0.1")` is called.

If `_load_config_impl` does not add the extension if it's missing, it might fail.

Let's check `_load_config_impl`. I'll read it from `hydra/_internal/config_loader.py`.
TOOL CALL · read_file
{
  "end_line": 250,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 100
}
Result of read_file 6,013 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "        return self.config_search_path\n\n    def get_load_history(self):\n        \"\"\"\n        returns the load history (which configs were attempted to load, and if they\n        were loaded successfully or not.\n        \"\"\"\n        return copy.deepcopy(self.all_config_checked)\n\n    @staticmethod\n    def _split_path(path):\n        prefix = \"pkg://\"\n        is_pkg = path.startswith(prefix)\n        if is_pkg:\n            path = path[len(prefix) :]\n        return is_pkg, path\n\n    def _find_config(self, filepath):\n        found_search_path = None\n        for search_path in self.config_search_path.config_search_path:\n            is_pkg, path = self._split_path(search_path.path)\n            config_file = \"{}/{}\".format(path, filepath)\n            if self._exists(is_pkg, config_file):\n                found_search_path = search_path\n                break\n        return filepath, found_search_path\n\n    @staticmethod\n    def _split_key_val(s):\n        assert \"=\" in s, \"'{}' not a valid override, expecting key=value format\".format(\n            s\n        )\n\n        idx = s.find(\"=\")\n        assert idx != -1\n        return s[0:idx], s[idx + 1 :]\n\n    @staticmethod\n    def _apply_defaults_overrides(overrides, defaults):\n        consumed = []\n        key_to_idx = {}\n        for idx, d in enumerate(defaults):\n            if isinstance(d, DictConfig):\n                key = next(iter(d.keys()))\n                key_to_idx[key] = idx\n        for override in copy.deepcopy(overrides):\n            key, value = ConfigLoader._split_key_val(override)\n            if key in key_to_idx:\n                if \",\" in value:\n                    # If this is a multirun config (comma separated list), flag the default to prevent it from being\n                    # loaded until we are constructing the config for individual jobs.\n                    value = \"_SKIP_\"\n\n                if value == \"null\":\n                    del defaults[key_to_idx[key]]\n                else:\n                    defaults[key_to_idx[key]][key] = value\n\n                overrides.remove(override)\n                consumed.append(override)\n        return consumed\n\n    def _apply_free_defaults(self, defaults, overrides):\n        consumed = []\n        for override in overrides:\n            key, value = ConfigLoader._split_key_val(override)\n            if self.exists_in_search_path(key):\n                # Do not add multirun configs into defaults, those will be added to the defaults\n                # during the runs after list is broken into items\n                if \",\" not in value:\n                    defaults.append({key: value})\n                overrides.remove(override)\n                consumed.append(override)\n\n        return consumed\n\n    @staticmethod\n    def _merge_default_lists(primary, merged_list):\n        def get_key(d1):\n            keys_iter = iter(d1.keys())\n            key1 = next(keys_iter)\n            if key1 == \"optional\":\n                key1 = next(keys_iter)\n            return key1\n\n        key_to_idx = {}\n        for idx, d in enumerate(primary):\n            if isinstance(d, (dict, DictConfig)):\n                key = get_key(d)\n                key_to_idx[key] = idx\n        for d in copy.deepcopy(merged_list):\n            if isinstance(d, (dict, DictConfig)):\n                key = get_key(d)\n                if key in key_to_idx.keys():\n                    idx = key_to_idx[key]\n                    primary[idx] = d\n                    merged_list.remove(d)\n\n        for d in merged_list:\n            primary.append(d)\n\n    def _load_config_impl(self, input_file, record_load=True):\n        \"\"\"\n        :param input_file:\n        :param record_load:\n        :return: the loaded config or None if it was not found\n        \"\"\"\n        loaded_cfg = None\n        filename, search_path = self._find_config(input_file)\n        if search_path is None and record_load:\n            assert search_path is None\n            self.all_config_checked.append((filename, None, None))\n\n        if search_path is not None:\n            fullpath = \"{}/{}\".format(search_path.path, filename)\n            is_pkg = search_path.path.startswith(\"pkg://\")\n            if is_pkg:\n                fullpath = fullpath[len(\"pkg://\") :]\n                module_name, resource_name = ConfigLoader._split_module_and_resource(\n                    fullpath\n                )\n                with resource_stream(module_name, resource_name) as stream:\n                    loaded_cfg = OmegaConf.load(stream)\n                if record_load:\n                    self.all_config_checked.append(\n                        (filename, search_path.path, search_path.provider)\n                    )\n            elif os.path.exists(fullpath):\n                loaded_cfg = OmegaConf.load(fullpath)\n                if record_load:\n                    self.all_config_checked.append(\n                        (filename, search_path.path, search_path.provider)\n                    )\n            else:\n                # This should never happen because we just searched for it and found it\n                assert False, \"'{}' not found\".format(fullpath)\n        return loaded_cfg\n\n    def list_groups(self, parent_name):\n        ret = list(set(self.get_group_options(parent_name, file_type=\"dir\")))\n        return ret\n\n    def get_group_options(self, group_name, file_type=\"file\"):\n        options = []\n        for search_path in self.config_search_path.config_search_path:\n            search_path = search_path.path\n            is_pkg, path = self._split_path(search_path)\n            files = []\n            if is_pkg:\n                module_name, resource_name = ConfigLoader._split_module_and_resource(",
  "start_line": 100,
  "end_line": 249,
  "total_lines": 453,
  "is_truncated": true
}
Generated tokens 403 tokens · stopped: STOP
Wait, I see something interesting in `_merge_defaults`: ```python def _merge_defaults(self, cfg, defaults, split_at): def get_filename(config_name): filename, ext = os.path.splitext(config_name) if ext == "": ext = ".yaml" return "{}{}".format(filename, ext) ``` And it's used here: ```python # Name is none if default value is removed if name is not None and "_SKIP_" not in name: merged_cfg = self._merge_config( cfg=merged_cfg, family=family, name=get_filename(name), required=not is_optional, ) ``` If `name` is `"0.1"`, `os.path.splitext("0.1")` will return `('0', '.1')`. Then `ext` is `'.1'`, which is not `""`. So `get_filename("0.1")` returns `"0.1"`. Then `_merge_config` is called with `name="0.1"` and `family="lr"`. `new_cfg` becomes `"lr/0.1"`. Then `self._load_config_impl("lr/0.1")` is called. If `_load_config_impl` does not add the extension if it's missing, it might fail. Let's check `_load_config_impl`. I'll read it from `hydra/_internal/config_loader.py`. <channel|><|tool_call>call:read_file{end_line:250,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:100}<tool_call|><|tool_response>
Turn 6at 149 s520 tokens out9,917 prompt tokens
In `_load_config_impl`:

```python
    def _load_config_impl(self, input_file, record_load=True):
        """
        :param input_file:
        :param record_load:
        :return: the loaded config or None if it was not found
        """
        loaded_cfg = None
        filename, search_path = self._find_config(input_file)
```

And `_find_config`:

```python
    def _find_config(self, filepath):
        found_search_path = None
        for search_path in self.config_search_path.config_search_path:
            is_pkg, path = self._split_path(search_path.path)
            config_file = "{}/{}".format(path, filepath)
            if self._exists(is_pkg, config_file):
                found_search_path = search_path
                break
        return filepath, found_search_path
```

If `filepath` is `"lr/0.1"`, then `config_file` is `"conf/lr/0.1"`.
`self._exists(is_pkg, "conf/lr/0.1")` will return `False` because it's looking for a file named `0.1` in `conf/lr/`, but the file is `0.1.yaml`.

The `get_filename` helper in `_merge_defaults` was clearly intended to handle this, but it's flawed:

```python
        def get_filename(config_name):
            filename, ext = os.path.splitext(config_name)
            if ext == "":
                ext = ".yaml"
            return "{}{}".format(filename, ext)
```

If `config_name` is `"0.1"`, `os.path.splitext("0.1")` is `('0', '.1')`.
`ext` is `'.1'`, so it returns `"0.1"`.

Wait, `os.path.splitext("0.1")` returns `('0', '.1')`? Let's check.
TOOL CALL · run_command
{
  "command": "python3 -c \"import os; print(os.path.splitext('0.1'))\""
}
Result of run_command 73 characters
{
  "status": "ok",
  "stdout": "('0', '.1')\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 520 tokens · stopped: STOP
In `_load_config_impl`: ```python def _load_config_impl(self, input_file, record_load=True): """ :param input_file: :param record_load: :return: the loaded config or None if it was not found """ loaded_cfg = None filename, search_path = self._find_config(input_file) ``` And `_find_config`: ```python def _find_config(self, filepath): found_search_path = None for search_path in self.config_search_path.config_search_path: is_pkg, path = self._split_path(search_path.path) config_file = "{}/{}".format(path, filepath) if self._exists(is_pkg, config_file): found_search_path = search_path break return filepath, found_search_path ``` If `filepath` is `"lr/0.1"`, then `config_file` is `"conf/lr/0.1"`. `self._exists(is_pkg, "conf/lr/0.1")` will return `False` because it's looking for a file named `0.1` in `conf/lr/`, but the file is `0.1.yaml`. The `get_filename` helper in `_merge_defaults` was clearly intended to handle this, but it's flawed: ```python def get_filename(config_name): filename, ext = os.path.splitext(config_name) if ext == "": ext = ".yaml" return "{}{}".format(filename, ext) ``` If `config_name` is `"0.1"`, `os.path.splitext("0.1")` is `('0', '.1')`. `ext` is `'.1'`, so it returns `"0.1"`. Wait, `os.path.splitext("0.1")` returns `('0', '.1')`? Let's check. <channel|><|tool_call>call:run_command{command:<|"|>python3 -c "import os; print(os.path.splitext('0.1'))"<|"|>}<tool_call|><|tool_response>
Turn 7at 190 s545 tokens out10,483 prompt tokens
Yes, it does.

So when `config_name` is `"0.1"`, `get_filename` returns `"0.1"`.
And then `_merge_config` is called with `name="0.1"`.
Then `_load_config_impl("lr/0.1")` is called.
And then `_find_config` looks for `conf/lr/0.1`, which doesn't exist.

The issue is that `os.path.splitext` considers `.1` to be an extension.
In Hydra, config files normally end in `.yaml`.

If we want to ensure it ends in `.yaml` regardless of whether there are other dots in the filename, we should just check if it ends with `.yaml`.

But wait, does Hydra support other extensions?
Let's look at `get_group_options`:

```python
                        elif file_type == "file" and file.endswith(".yaml"):
                            files.append(file[0 : -len(".yaml")])
```

It seems Hydra is specifically looking for `.yaml` files in `get_group_options`.

If `get_filename` was:

```python
        def get_filename(config_name):
            if not config_name.endswith(".yaml"):
                return config_name + ".yaml"
            return config_name
```

Then `get_filename("0.1")` would return `"0.1.yaml"`.
And `_merge_config` would be called with `name="0.1.yaml"`.
Then `_load_config_impl("lr/0.1.yaml")` would be called.
`_find_config` would look for `conf/lr/0.1.yaml`, which exists.

Let's verify this fix with the reproduction script.

Wait, I should check if `config_name` can have other extensions that are supported.
In `get_group_options`, it only checks for `.yaml`.

Let's see if there are any other places where configs are loaded.

The `get_filename` function is inside `_merge_defaults`.
Is it used anywhere else? No, it's a local function.

But wait, `_merge_config` is also called from other places?
Let's check.
TOOL CALL · run_command
{
  "command": "grep -rn \"self._merge_config\" hydra/_internal/config_loader.py"
}
Result of run_command 184 characters
{
  "status": "ok",
  "stdout": "377:                        merged_cfg = self._merge_config(\n386:                        merged_cfg = self._merge_config(\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 545 tokens · stopped: STOP
Yes, it does. So when `config_name` is `"0.1"`, `get_filename` returns `"0.1"`. And then `_merge_config` is called with `name="0.1"`. Then `_load_config_impl("lr/0.1")` is called. And then `_find_config` looks for `conf/lr/0.1`, which doesn't exist. The issue is that `os.path.splitext` considers `.1` to be an extension. In Hydra, config files normally end in `.yaml`. If we want to ensure it ends in `.yaml` regardless of whether there are other dots in the filename, we should just check if it ends with `.yaml`. But wait, does Hydra support other extensions? Let's look at `get_group_options`: ```python elif file_type == "file" and file.endswith(".yaml"): files.append(file[0 : -len(".yaml")]) ``` It seems Hydra is specifically looking for `.yaml` files in `get_group_options`. If `get_filename` was: ```python def get_filename(config_name): if not config_name.endswith(".yaml"): return config_name + ".yaml" return config_name ``` Then `get_filename("0.1")` would return `"0.1.yaml"`. And `_merge_config` would be called with `name="0.1.yaml"`. Then `_load_config_impl("lr/0.1.yaml")` would be called. `_find_config` would look for `conf/lr/0.1.yaml`, which exists. Let's verify this fix with the reproduction script. Wait, I should check if `config_name` can have other extensions that are supported. In `get_group_options`, it only checks for `.yaml`. Let's see if there are any other places where configs are loaded. The `get_filename` function is inside `_merge_defaults`. Is it used anywhere else? No, it's a local function. But wait, `_merge_config` is also called from other places? Let's check. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "self._merge_config" hydra/_internal/config_loader.py<|"|>}<tool_call|><|tool_response>
Turn 8at 197 s82 tokens out11,098 prompt tokens
It's only called within `_merge_defaults`.

What about `_load_config_impl`?
It's called from `_merge_config`.
Is it called from anywhere else?
TOOL CALL · run_command
{
  "command": "grep -rn \"self._load_config_impl\" hydra/_internal/config_loader.py"
}
Result of run_command 203 characters
{
  "status": "ok",
  "stdout": "294:        loaded_cfg = self._load_config_impl(new_cfg)\n412:            cfg = self._load_config_impl(cfg_filename, record_load=record_load)\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 82 tokens · stopped: STOP
It's only called within `_merge_defaults`. What about `_load_config_impl`? It's called from `_merge_config`. Is it called from anywhere else? <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "self._load_config_impl" hydra/_internal/config_loader.py<|"|>}<tool_call|><|tool_response>
Turn 9at 200 s72 tokens out11,268 prompt tokens
It's called in `_merge_config` and also at line 412. Let's see line 412.
TOOL CALL · read_file
{
  "end_line": 420,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 400
}
Result of read_file 950 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                user_list.append(default)\n        cfg = merge_defaults(cfg, system_list)\n        cfg = merge_defaults(cfg, user_list)\n\n        if \"defaults\" in cfg:\n            del cfg[\"defaults\"]\n        return cfg\n\n    def _create_cfg(self, cfg_filename, record_load=True):\n        if cfg_filename is None:\n            cfg = OmegaConf.create()\n        else:\n            cfg = self._load_config_impl(cfg_filename, record_load=record_load)\n            if cfg is None:\n                raise IOError(\n                    \"could not find {}, config path:\\n\\t\".format(\n                        cfg_filename,\n                        \"\\n\\t\".join(self.config_search_path.config_search_path),\n                    )\n                )\n        if cfg.defaults is not None:",
  "start_line": 400,
  "end_line": 420,
  "total_lines": 453,
  "is_truncated": false
}
Generated tokens 72 tokens · stopped: STOP
It's called in `_merge_config` and also at line 412. Let's see line 412. <channel|><|tool_call>call:read_file{end_line:420,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:400}<tool_call|><|tool_response>
Turn 10at 204 s70 tokens out11,620 prompt tokens
Line 412 is in `_create_cfg`.
`_create_cfg` is probably called by `load_configuration`. Let's check.
TOOL CALL · run_command
{
  "command": "grep -rn \"self._create_cfg\" hydra/_internal/config_loader.py"
}
Result of run_command 219 characters
{
  "status": "ok",
  "stdout": "39:        hydra_cfg = self._create_cfg(cfg_filename=\"hydra.yaml\")\n42:        job_cfg = self._create_cfg(cfg_filename=self.config_file, record_load=False)\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 70 tokens · stopped: STOP
Line 412 is in `_create_cfg`. `_create_cfg` is probably called by `load_configuration`. Let's check. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "self._create_cfg" hydra/_internal/config_loader.py<|"|>}<tool_call|><|tool_response>
Turn 11at 218 s203 tokens out11,785 prompt tokens
Wait, `_create_cfg` is called with `cfg_filename="hydra.yaml"` and `self.config_file`.
If `self.config_file` is `"config"`, then `_load_config_impl("config")` will be called.
And `_find_config("config")` will look for `conf/config`, and it will fail if it's `conf/config.yaml`.

Wait, if `self.config_file` is `"config"`, does `_create_cfg` fail?
Let's see how `self.config_file` is set.
Usually it's initialized to `config.yaml` or passed in.

Wait, let's check `load_configuration` again.
TOOL CALL · read_file
{
  "end_line": 70,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 30
}
Result of read_file 1,797 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "        self.config_search_path = config_search_path\n        self.all_config_checked = []\n        self.strict_cfg = strict_cfg\n\n    def load_configuration(self, overrides=[]):\n        assert overrides is None or isinstance(overrides, list)\n        overrides = overrides or []\n\n        # Load hydra config\n        hydra_cfg = self._create_cfg(cfg_filename=\"hydra.yaml\")\n\n        # Load job config\n        job_cfg = self._create_cfg(cfg_filename=self.config_file, record_load=False)\n\n        defaults = hydra_cfg.defaults or []\n        if self.config_file is not None:\n            defaults.append(self.config_file)\n        split_at = len(defaults)\n        ConfigLoader._merge_default_lists(defaults, job_cfg.defaults or [])\n        consumed = self._apply_defaults_overrides(overrides, defaults)\n\n        consumed_free_job_defaults = self._apply_free_defaults(defaults, overrides)\n\n        ConfigLoader._validate_defaults(defaults)\n\n        # Load and defaults and merge them into cfg\n        cfg = self._merge_defaults(hydra_cfg, defaults, split_at)\n\n        job = OmegaConf.create(dict(name=JobRuntime().get(\"name\")))\n        cfg.hydra.job = OmegaConf.merge(job, cfg.hydra.job)\n\n        OmegaConf.set_struct(cfg, self.strict_cfg)\n\n        # Merge all command line overrides after enabling strict flag\n        all_consumed = consumed + consumed_free_job_defaults\n        remaining_overrides = [x for x in overrides if x not in all_consumed]\n        cfg.merge_with_dotlist(remaining_overrides)\n\n        remaining = consumed + consumed_free_job_defaults + remaining_overrides\n\n        def is_hydra(x):",
  "start_line": 30,
  "end_line": 70,
  "total_lines": 453,
  "is_truncated": false
}
Generated tokens 203 tokens · stopped: STOP
Wait, `_create_cfg` is called with `cfg_filename="hydra.yaml"` and `self.config_file`. If `self.config_file` is `"config"`, then `_load_config_impl("config")` will be called. And `_find_config("config")` will look for `conf/config`, and it will fail if it's `conf/config.yaml`. Wait, if `self.config_file` is `"config"`, does `_create_cfg` fail? Let's see how `self.config_file` is set. Usually it's initialized to `config.yaml` or passed in. Wait, let's check `load_configuration` again.<channel|><|tool_call>call:read_file{end_line:70,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:30}<tool_call|><|tool_response>
Turn 12at 234 s224 tokens out12,539 prompt tokens
In `load_configuration`:
`job_cfg = self._create_cfg(cfg_filename=self.config_file, record_load=False)`

If `self.config_file` is `"config.yaml"`, then it works.
If the user specifies `config_name="config"` in `hydra.main` (which they can't in this version, but maybe in other versions or via other means), we should check what `self.config_file` is.

Wait, in my reproduction:
`@hydra.main(config_path="conf")`
`conf/config.yaml` exists.
Hydra probably defaults `self.config_file` to `"config.yaml"`.

Let's check `hydra/_internal/hydra.py` to see how `ConfigLoader` is initialized.
TOOL CALL · read_file
{
  "end_line": 360,
  "filepath": "hydra/_internal/hydra.py",
  "start_line": 330
}
Result of read_file 1,283 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/hydra.py",
  "content": "                    \"| {} | {} | {} |\".format(\n                        provider.ljust(provider_pad),\n                        search_path.ljust(search_path_pad),\n                        file.ljust(file_pad),\n                    )\n                )\n            else:\n                log.debug(\"{} : NOT FOUND\".format(file))\n\n    def _print_debug_info(self):\n        self._print_plugins()\n        self._print_search_path()\n        self._print_composition_trace()\n\n    def _load_config(self, overrides):\n        cfg = self.config_loader.load_configuration(overrides)\n        with open_dict(cfg):\n            from .. import __version__\n\n            cfg.hydra.runtime.version = __version__\n            cfg.hydra.runtime.cwd = os.getcwd()\n        configure_log(cfg.hydra.hydra_logging, cfg.hydra.verbose)\n        global log\n        log = logging.getLogger(__name__)\n        self._print_debug_info()\n        return cfg\n\n    @staticmethod\n    def _strict_mode_strategy(strict, config_file):\n        \"\"\"Decide how to set strict mode.\n        If a value was provided -- always use it. Otherwise decide based",
  "start_line": 330,
  "end_line": 360,
  "total_lines": 368,
  "is_truncated": false
}
Generated tokens 224 tokens · stopped: STOP
In `load_configuration`: `job_cfg = self._create_cfg(cfg_filename=self.config_file, record_load=False)` If `self.config_file` is `"config.yaml"`, then it works. If the user specifies `config_name="config"` in `hydra.main` (which they can't in this version, but maybe in other versions or via other means), we should check what `self.config_file` is. Wait, in my reproduction: `@hydra.main(config_path="conf")` `conf/config.yaml` exists. Hydra probably defaults `self.config_file` to `"config.yaml"`. Let's check `hydra/_internal/hydra.py` to see how `ConfigLoader` is initialized. <channel|><|tool_call>call:read_file{end_line:360,filepath:<|"|>hydra/_internal/hydra.py<|"|>,start_line:330}<tool_call|><|tool_response>
Turn 13at 236 s67 tokens out13,143 prompt tokens
Wait, I need to see how `config_loader` is created in `hydra/_internal/hydra.py`.
TOOL CALL · read_file
{
  "end_line": 240,
  "filepath": "hydra/_internal/hydra.py",
  "start_line": 180
}
Result of read_file 2,551 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/hydra.py",
  "content": "                    )\n                )\n            return shell_to_plugin[cmd][0]\n\n        if arguments.install is not None:\n            plugin = find_plugin(arguments.install)\n            plugin.install()\n        elif arguments.uninstall is not None:\n            plugin = find_plugin(arguments.uninstall)\n            plugin.uninstall()\n        elif arguments.query is not None:\n            plugin = find_plugin(arguments.query)\n            plugin.query()\n\n    @staticmethod\n    def format_args_help(args_parser):\n        s = \"\"\n        overrides = None\n        for action in args_parser._actions:\n            if len(action.option_strings) == 0:\n                overrides = action\n            else:\n                s += \"{} : {}\\n\".format(\",\".join(action.option_strings), action.help)\n        s += \"Overrides : \" + overrides.help\n        return s\n\n    def list_all_config_groups(self, parent=\"\"):\n        groups = []\n        for group in self.config_loader.list_groups(parent):\n            if parent == \"\":\n                group_name = group\n            else:\n                group_name = \"{}/{}\".format(parent, group)\n            files = self.config_loader.get_group_options(group_name, file_type=\"file\")\n            dirs = self.config_loader.get_group_options(group_name, file_type=\"dir\")\n            if len(files) > 0:\n                groups.append(group_name)\n            if len(dirs) > 0:\n                groups.extend(self.list_all_config_groups(group_name))\n        return groups\n\n    def format_config_groups(self, predicate, compact=True):\n        groups = [x for x in self.list_all_config_groups() if predicate(x)]\n        s = \"\"\n        for group in sorted(groups):\n            options = sorted(self.config_loader.get_group_options(group))\n            if compact:\n                items = \", \".join(options)\n                line = \"{}: {}\".format(group, items)\n            else:\n                items = \"\\n\".join([\"  \" + o for o in options])\n                line = \"{}:\\n{}\".format(group, items)\n            s += line + \"\\n\"\n\n        return s\n\n    def get_help(self, help_cfg, cfg, args_parser):\n        s = string.Template(help_cfg.template)\n        help_text = s.substitute(\n            FLAGS_HELP=self.format_args_help(args_parser),\n            HYDRA_CONFIG_GROUPS=self.format_config_groups(",
  "start_line": 180,
  "end_line": 240,
  "total_lines": 368,
  "is_truncated": false
}
Generated tokens 67 tokens · stopped: STOP
Wait, I need to see how `config_loader` is created in `hydra/_internal/hydra.py`. <channel|><|tool_call>call:read_file{end_line:240,filepath:<|"|>hydra/_internal/hydra.py<|"|>,start_line:180}<tool_call|><|tool_response>
Turn 14at 240 s54 tokens out13,947 prompt tokens
Still didn't find where `ConfigLoader` is instantiated. Let's search for `ConfigLoader(`.
TOOL CALL · run_command
{
  "command": "grep -rn \"ConfigLoader(\" hydra/_internal/hydra.py"
}
Result of run_command 107 characters
{
  "status": "ok",
  "stdout": "85:        self.config_loader = ConfigLoader(\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 54 tokens · stopped: STOP
Still didn't find where `ConfigLoader` is instantiated. Let's search for `ConfigLoader(`. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "ConfigLoader(" hydra/_internal/hydra.py<|"|>}<tool_call|><|tool_response>
Turn 15at 242 s54 tokens out14,053 prompt tokens
Okay, line 85. Let's see that section.
TOOL CALL · read_file
{
  "end_line": 110,
  "filepath": "hydra/_internal/hydra.py",
  "start_line": 70
}
Result of read_file 1,673 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/hydra.py",
  "content": "\n        abs_config_dir = basedir_prefix + abs_config_dir\n\n        search_path = ConfigSearchPath()\n        search_path.append(\"hydra\", \"pkg://hydra.conf\")\n        search_path.append(\"main\", abs_config_dir)\n\n        search_path_plugins = Plugins.discover(SearchPathPlugin)\n        for spp in search_path_plugins:\n            plugin = spp()\n            plugin.manipulate_search_path(search_path)\n\n        # decide on strict mode\n        strict = self._strict_mode_strategy(strict, config_file)\n\n        self.config_loader = ConfigLoader(\n            config_file=config_file, config_search_path=search_path, strict_cfg=strict\n        )\n        if not self.config_loader.exists(abs_config_dir):\n            raise MissingConfigException(\n                missing_cfg_file=abs_config_dir,\n                message=\"Primary config dir not found: {}\".format(abs_config_dir),\n            )\n\n        if config_file is not None and not self.config_loader.exists_in_search_path(\n            config_file\n        ):\n            raise MissingConfigException(\n                missing_cfg_file=config_file,\n                message=\"Cannot find primary config file: {}\".format(config_file),\n            )\n\n    def run(self, overrides):\n        cfg = self._load_config(overrides)\n        HydraConfig().set_config(cfg)\n        with open_dict(cfg):\n            cfg.hydra.job.override_dirname = get_overrides_dirname(\n                cfg.hydra.overrides.task\n            )\n\n        return run_job(",
  "start_line": 70,
  "end_line": 110,
  "total_lines": 368,
  "is_truncated": false
}
Generated tokens 54 tokens · stopped: STOP
Okay, line 85. Let's see that section. <channel|><|tool_call>call:read_file{end_line:110,filepath:<|"|>hydra/_internal/hydra.py<|"|>,start_line:70}<tool_call|><|tool_response>
Turn 16at 248 s68 tokens out14,598 prompt tokens
And `config_file` is probably passed to the `Hydra` class.
Let's check `Hydra.__init__`.
TOOL CALL · read_file
{
  "end_line": 80,
  "filepath": "hydra/_internal/hydra.py",
  "start_line": 40
}
Result of read_file 1,716 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/hydra.py",
  "content": "            task_name = os.path.splitext(target_file)[0]\n        else:\n            # module is installed, use pkg:// access to get configs\n            last_dot = calling_module.rfind(\".\")\n            if last_dot != -1:\n                task_name = calling_module[last_dot + 1 :]\n            else:\n                task_name = calling_module\n            basedir_prefix = \"pkg://\"\n            abs_base_dir = calling_module\n\n        task_name = get_valid_filename(task_name)\n        JobRuntime().set(\"name\", task_name)\n        self.task_name = task_name\n        self.task_function = task_function\n\n        split_file = splitext(config_path)\n        if split_file[1] in (\".yaml\", \".yml\"):\n            # assuming dir/config.yaml form\n            config_file = basename(config_path)\n            config_dir = dirname(config_path)\n        else:\n            # assuming dir form without a config file.\n            config_file = None\n            config_dir = config_path\n\n        if config_dir != \"\":\n            abs_config_dir = \"{}/{}\".format(abs_base_dir, config_dir)\n        else:\n            abs_config_dir = abs_base_dir\n\n        abs_config_dir = basedir_prefix + abs_config_dir\n\n        search_path = ConfigSearchPath()\n        search_path.append(\"hydra\", \"pkg://hydra.conf\")\n        search_path.append(\"main\", abs_config_dir)\n\n        search_path_plugins = Plugins.discover(SearchPathPlugin)\n        for spp in search_path_plugins:\n            plugin = spp()\n            plugin.manipulate_search_path(search_path)",
  "start_line": 40,
  "end_line": 80,
  "total_lines": 368,
  "is_truncated": false
}
Generated tokens 68 tokens · stopped: STOP
And `config_file` is probably passed to the `Hydra` class. Let's check `Hydra.__init__`. <channel|><|tool_call>call:read_file{end_line:80,filepath:<|"|>hydra/_internal/hydra.py<|"|>,start_line:40}<tool_call|><|tool_response>
Turn 17at 328 s123 tokens out3,627 prompt tokens
The `Hydra` constructor logic for `config_file` seems to only handle the initial primary config file.
The bug report says `lr=0.1` fails. That's an override.
Overrides are handled in `Hydra.run(self, overrides)`, which calls `self._load_config(overrides)`.
Let's see `_load_config`.
TOOL CALL · read_file
{
  "end_line": 170,
  "filepath": "hydra/_internal/hydra.py",
  "start_line": 120
}
Result of read_file 2,101 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/hydra.py",
  "content": "        sweeper = Plugins.instantiate_sweeper(\n            config=cfg,\n            config_loader=self.config_loader,\n            task_function=self.task_function,\n        )\n        task_overrides = cfg.hydra.overrides.task\n        return sweeper.sweep(arguments=task_overrides)\n\n    @staticmethod\n    def get_sanitized_hydra_cfg(src_cfg):\n        cfg = copy.deepcopy(src_cfg)\n        for key in list(cfg.keys()):\n            if key != \"hydra\":\n                del cfg[key]\n        del cfg.hydra[\"hydra_help\"]\n        del cfg.hydra[\"help\"]\n        return cfg\n\n    def show_cfg(self, overrides, cfg_type):\n        assert cfg_type in [\"job\", \"hydra\", \"all\"]\n        cfg = self._load_config(overrides)\n        if cfg_type == \"job\":\n            del cfg[\"hydra\"]\n        elif cfg_type == \"hydra\":\n            cfg = self.get_sanitized_hydra_cfg(cfg)\n        print(cfg.pretty())\n\n    @staticmethod\n    def get_shell_to_plugin_map(config_loader):\n        shell_to_plugin = defaultdict(list)\n        for clazz in Plugins.discover(CompletionPlugin):\n            plugin = clazz(config_loader)\n            shell_to_plugin[plugin.provides()].append(plugin)\n\n        for shell, plugins in shell_to_plugin.items():\n            if len(plugins) > 1:\n                raise ValueError(\n                    \"Multiple plugins installed for {} : {}\".format(\n                        shell, \",\".join([type(plugin).__name__ for plugin in plugins])\n                    )\n                )\n\n        return shell_to_plugin\n\n    def shell_completion(self, overrides):\n        subcommands = [\"install\", \"uninstall\", \"query\"]\n        arguments = OmegaConf.from_dotlist(overrides)\n        num_commands = sum(1 for key in subcommands if arguments[key] is not None)\n        if num_commands != 1:\n            raise ValueError(\n                \"Expecting one subcommand from {} to be set\".format(subcommands)",
  "start_line": 120,
  "end_line": 170,
  "total_lines": 368,
  "is_truncated": false
}
Generated tokens 123 tokens · stopped: STOP
The `Hydra` constructor logic for `config_file` seems to only handle the initial primary config file. The bug report says `lr=0.1` fails. That's an override. Overrides are handled in `Hydra.run(self, overrides)`, which calls `self._load_config(overrides)`. Let's see `_load_config`. <channel|><|tool_call>call:read_file{end_line:170,filepath:<|"|>hydra/_internal/hydra.py<|"|>,start_line:120}<tool_call|><|tool_response>
Turn 18at 333 s99 tokens out4,362 prompt tokens
Wait, I missed `_load_config`. I read 120-170 but it starts after `return sweeper.sweep(arguments=task_overrides)`.
Let's look for `def _load_config` in `hydra/_internal/hydra.py`.
TOOL CALL · run_command
{
  "command": "grep -n \"def _load_config\" hydra/_internal/hydra.py"
}
Result of run_command 104 characters
{
  "status": "ok",
  "stdout": "344:    def _load_config(self, overrides):\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 99 tokens · stopped: STOP
Wait, I missed `_load_config`. I read 120-170 but it starts after `return sweeper.sweep(arguments=task_overrides)`. Let's look for `def _load_config` in `hydra/_internal/hydra.py`. <channel|><|tool_call>call:run_command{command:<|"|>grep -n "def _load_config" hydra/_internal/hydra.py<|"|>}<tool_call|><|tool_response>
Turn 19at 335 s55 tokens out4,515 prompt tokens
Ah, it's at the end. Let's read it.
TOOL CALL · read_file
{
  "end_line": 368,
  "filepath": "hydra/_internal/hydra.py",
  "start_line": 340
}
Result of read_file 1,118 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/hydra.py",
  "content": "        self._print_plugins()\n        self._print_search_path()\n        self._print_composition_trace()\n\n    def _load_config(self, overrides):\n        cfg = self.config_loader.load_configuration(overrides)\n        with open_dict(cfg):\n            from .. import __version__\n\n            cfg.hydra.runtime.version = __version__\n            cfg.hydra.runtime.cwd = os.getcwd()\n        configure_log(cfg.hydra.hydra_logging, cfg.hydra.verbose)\n        global log\n        log = logging.getLogger(__name__)\n        self._print_debug_info()\n        return cfg\n\n    @staticmethod\n    def _strict_mode_strategy(strict, config_file):\n        \"\"\"Decide how to set strict mode.\n        If a value was provided -- always use it. Otherwise decide based\n        on the existence of config_file.\n        \"\"\"\n\n        if strict is not None:\n            return strict\n\n        # strict if config_file is present\n        return config_file is not None",
  "start_line": 340,
  "end_line": 368,
  "total_lines": 368,
  "is_truncated": false
}
Generated tokens 55 tokens · stopped: STOP
Ah, it's at the end. Let's read it.<channel|><|tool_call>call:read_file{end_line:368,filepath:<|"|>hydra/_internal/hydra.py<|"|>,start_line:340}<tool_call|><|tool_response>
Turn 20at 345 s152 tokens out4,914 prompt tokens
It calls `self.config_loader.load_configuration(overrides)`. So we are back to `ConfigLoader`.
I've already seen `ConfigLoader.load_configuration` and its call to `_merge_defaults`.

Wait, did I check `ConfigLoader.exists` and `ConfigLoader.exists_in_search_path`?
If `get_filename` is used there too, it might be a problem.

Let's check `hydra/_internal/config_loader.py` again.
TOOL CALL · read_file
{
  "end_line": 220,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 1
}
Result of read_file 5,729 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved\n\"\"\"\nConfiguration loader\n\"\"\"\n\nimport copy\nimport os\n\nfrom omegaconf import OmegaConf, DictConfig, ListConfig, open_dict\nfrom pkg_resources import (\n    resource_stream,\n    resource_exists,\n    resource_listdir,\n    resource_isdir,\n)\n\nfrom .config_search_path import ConfigSearchPath\nfrom ..errors import MissingConfigException\nfrom ..plugins.common.utils import JobRuntime\n\n\nclass ConfigLoader:\n    \"\"\"\n    Configuration loader\n    \"\"\"\n\n    def __init__(self, config_file, strict_cfg, config_search_path):\n        assert isinstance(config_search_path, ConfigSearchPath)\n        self.config_file = config_file\n        self.config_search_path = config_search_path\n        self.all_config_checked = []\n        self.strict_cfg = strict_cfg\n\n    def load_configuration(self, overrides=[]):\n        assert overrides is None or isinstance(overrides, list)\n        overrides = overrides or []\n\n        # Load hydra config\n        hydra_cfg = self._create_cfg(cfg_filename=\"hydra.yaml\")\n\n        # Load job config\n        job_cfg = self._create_cfg(cfg_filename=self.config_file, record_load=False)\n\n        defaults = hydra_cfg.defaults or []\n        if self.config_file is not None:\n            defaults.append(self.config_file)\n        split_at = len(defaults)\n        ConfigLoader._merge_default_lists(defaults, job_cfg.defaults or [])\n        consumed = self._apply_defaults_overrides(overrides, defaults)\n\n        consumed_free_job_defaults = self._apply_free_defaults(defaults, overrides)\n\n        ConfigLoader._validate_defaults(defaults)\n\n        # Load and defaults and merge them into cfg\n        cfg = self._merge_defaults(hydra_cfg, defaults, split_at)\n\n        job = OmegaConf.create(dict(name=JobRuntime().get(\"name\")))\n        cfg.hydra.job = OmegaConf.merge(job, cfg.hydra.job)\n\n        OmegaConf.set_struct(cfg, self.strict_cfg)\n\n        # Merge all command line overrides after enabling strict flag\n        all_consumed = consumed + consumed_free_job_defaults\n        remaining_overrides = [x for x in overrides if x not in all_consumed]\n        cfg.merge_with_dotlist(remaining_overrides)\n\n        remaining = consumed + consumed_free_job_defaults + remaining_overrides\n\n        def is_hydra(x):\n            return x.startswith(\"hydra.\") or x.startswith(\"hydra/\")\n\n        cfg.hydra.overrides.task = [x for x in remaining if not is_hydra(x)]\n        cfg.hydra.overrides.hydra = [x for x in remaining if is_hydra(x)]\n\n        return cfg\n\n    def load_sweep_config(self, master_config, sweep_overrides):\n        # Recreate the config for this sweep instance with the appropriate overrides\n        overrides = master_config.hydra.overrides.hydra.to_container() + sweep_overrides\n        sweep_config = self.load_configuration(overrides)\n\n        with open_dict(sweep_config):\n            sweep_config.hydra.runtime = master_config.hydra.runtime\n\n        # Copy old config cache to ensure we get the same resolved values (for things like timestamps etc)\n        OmegaConf.copy_cache(from_config=master_config, to_config=sweep_config)\n\n        return sweep_config\n\n    def exists_in_search_path(self, filepath):\n        _filename, search_path = self._find_config(filepath)\n        return search_path is not None\n\n    def exists(self, filename):\n        is_pkg, path = self._split_path(filename)\n        return ConfigLoader._exists(is_pkg, path)\n\n    def get_search_path(self):\n        return self.config_search_path\n\n    def get_load_history(self):\n        \"\"\"\n        returns the load history (which configs were attempted to load, and if they\n        were loaded successfully or not.\n        \"\"\"\n        return copy.deepcopy(self.all_config_checked)\n\n    @staticmethod\n    def _split_path(path):\n        prefix = \"pkg://\"\n        is_pkg = path.startswith(prefix)\n        if is_pkg:\n            path = path[len(prefix) :]\n        return is_pkg, path\n\n    def _find_config(self, filepath):\n        found_search_path = None\n        for search_path in self.config_search_path.config_search_path:\n            is_pkg, path = self._split_path(search_path.path)\n            config_file = \"{}/{}\".format(path, filepath)\n            if self._exists(is_pkg, config_file):\n                found_search_path = search_path\n                break\n        return filepath, found_search_path\n\n    @staticmethod\n    def _split_key_val(s):\n        assert \"=\" in s, \"'{}' not a valid override, expecting key=value format\".format(\n            s\n        )\n\n        idx = s.find(\"=\")\n        assert idx != -1\n        return s[0:idx], s[idx + 1 :]\n\n    @staticmethod\n    def _apply_defaults_overrides(overrides, defaults):\n        consumed = []\n        key_to_idx = {}\n        for idx, d in enumerate(defaults):\n            if isinstance(d, DictConfig):\n                key = next(iter(d.keys()))\n                key_to_idx[key] = idx\n        for override in copy.deepcopy(overrides):\n            key, value = ConfigLoader._split_key_val(override)\n            if key in key_to_idx:\n                if \",\" in value:\n                    # If this is a multirun config (comma separated list), flag the default to prevent it from being\n                    # loaded until we are constructing the config for individual jobs.",
  "start_line": 1,
  "end_line": 150,
  "total_lines": 453,
  "is_truncated": true,
  "budget_warning": "Only 10 tool call(s) remaining (20/30 used). Finalize your edits and call submit_patch soon."
}
Generated tokens 152 tokens · stopped: STOP
It calls `self.config_loader.load_configuration(overrides)`. So we are back to `ConfigLoader`. I've already seen `ConfigLoader.load_configuration` and its call to `_merge_defaults`. Wait, did I check `ConfigLoader.exists` and `ConfigLoader.exists_in_search_path`? If `get_filename` is used there too, it might be a problem. Let's check `hydra/_internal/config_loader.py` again.<channel|><|tool_call>call:read_file{end_line:220,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:1}<tool_call|><|tool_response>
Turn 21at 363 s302 tokens out6,742 prompt tokens
Wait, I see `_find_config` and `exists_in_search_path`.
Let's see if `_find_config` uses `get_filename` or something similar.

Looking at `_find_config` (lines 103-111):
```python
    def _find_config(self, filepath):
        found_search_path = None
        for search_path in self.config_search_path.config_search_path:
            is_pkg, path = self._split_path(search_path.path)
            config_file = "{}/{}".format(path, filepath)
            if self._exists(is_pkg, config_file):
                found_search_path = search_path
                break
        return filepath, found_search_path
```
It doesn't call `get_filename`. It uses `filepath` as is.

Wait, if the user provides `lr=0.1`, how does Hydra know to look for `lr/0.1.yaml`?
The `_merge_defaults` function is where the config is actually loaded.

Let's check `_create_cfg`.
TOOL CALL · read_file
{
  "end_line": 300,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 221
}
Result of read_file 3,818 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                with resource_stream(module_name, resource_name) as stream:\n                    loaded_cfg = OmegaConf.load(stream)\n                if record_load:\n                    self.all_config_checked.append(\n                        (filename, search_path.path, search_path.provider)\n                    )\n            elif os.path.exists(fullpath):\n                loaded_cfg = OmegaConf.load(fullpath)\n                if record_load:\n                    self.all_config_checked.append(\n                        (filename, search_path.path, search_path.provider)\n                    )\n            else:\n                # This should never happen because we just searched for it and found it\n                assert False, \"'{}' not found\".format(fullpath)\n        return loaded_cfg\n\n    def list_groups(self, parent_name):\n        ret = list(set(self.get_group_options(parent_name, file_type=\"dir\")))\n        return ret\n\n    def get_group_options(self, group_name, file_type=\"file\"):\n        options = []\n        for search_path in self.config_search_path.config_search_path:\n            search_path = search_path.path\n            is_pkg, path = self._split_path(search_path)\n            files = []\n            if is_pkg:\n                module_name, resource_name = ConfigLoader._split_module_and_resource(\n                    \"{}/{}\".format(path, group_name)\n                )\n                if self._exists(is_pkg, path) and resource_isdir(\n                    module_name, resource_name\n                ):\n                    all_files = resource_listdir(module_name, resource_name)\n                    files = []\n                    for file in all_files:\n                        if (\n                            file_type == \"dir\"\n                            and resource_isdir(\n                                module_name, os.path.join(group_name, file)\n                            )\n                            and file != \"__pycache__\"\n                        ):\n                            files.append(file)\n                        elif file_type == \"file\" and file.endswith(\".yaml\"):\n                            files.append(file[0 : -len(\".yaml\")])\n            else:\n                group_path = \"{}/{}\".format(path, group_name)\n                if os.path.isdir(group_path):\n                    all_files = os.listdir(group_path)\n                    files = []\n                    for file in all_files:\n                        full_path = os.path.join(group_path, group_name, file)\n                        if (\n                            file_type == \"dir\"\n                            and os.path.isdir(full_path)\n                            and file != \"__pycache__\"\n                        ):\n                            files.append(file)\n                        elif file_type == \"file\" and file.endswith(\".yaml\"):\n                            files.append(file[0 : -len(\".yaml\")])\n\n            options.extend(files)\n        return options\n\n    def _merge_config(self, cfg, family, name, required):\n\n        if family != \"\":\n            new_cfg = \"{}/{}\".format(family, name)\n        else:\n            new_cfg = name\n\n        loaded_cfg = self._load_config_impl(new_cfg)\n        if loaded_cfg is None:\n            if required:\n                if family == \"\":\n                    msg = \"Could not load {}\".format(new_cfg)\n                    raise MissingConfigException(msg, new_cfg)\n                else:",
  "start_line": 221,
  "end_line": 300,
  "total_lines": 453,
  "is_truncated": false,
  "budget_warning": "Only 9 tool call(s) remaining (21/30 used). Finalize your edits and call submit_patch soon."
}
Generated tokens 302 tokens · stopped: STOP
Wait, I see `_find_config` and `exists_in_search_path`. Let's see if `_find_config` uses `get_filename` or something similar. Looking at `_find_config` (lines 103-111): ```python def _find_config(self, filepath): found_search_path = None for search_path in self.config_search_path.config_search_path: is_pkg, path = self._split_path(search_path.path) config_file = "{}/{}".format(path, filepath) if self._exists(is_pkg, config_file): found_search_path = search_path break return filepath, found_search_path ``` It doesn't call `get_filename`. It uses `filepath` as is. Wait, if the user provides `lr=0.1`, how does Hydra know to look for `lr/0.1.yaml`? The `_merge_defaults` function is where the config is actually loaded. Let's check `_create_cfg`.<channel|><|tool_call>call:read_file{end_line:300,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:221}<tool_call|><|tool_response>
Turn 22at 369 s103 tokens out7,998 prompt tokens
Wait, let's look at `_load_config_impl`. I need to see how it uses `get_filename` or `_find_config`.

I'll read `_load_config_impl` (which should be around 300-400).
TOOL CALL · read_file
{
  "end_line": 400,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 301
}
Result of read_file 4,420 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                    options = self.get_group_options(family)\n                    if options:\n                        msg = \"Could not load {}, available options:\\n{}:\\n\\t{}\".format(\n                            new_cfg, family, \"\\n\\t\".join(options)\n                        )\n                    else:\n                        msg = \"Could not load {}\".format(new_cfg)\n                    raise MissingConfigException(msg, new_cfg, options)\n            else:\n                return cfg\n\n        else:\n            return OmegaConf.merge(cfg, loaded_cfg)\n\n        assert False\n\n    @staticmethod\n    def _split_module_and_resource(filename):\n        sep = filename.find(\"/\")\n        if sep == -1:\n            module_name = filename\n            resource_name = \"\"\n        else:\n            module_name = filename[0:sep]\n            resource_name = filename[sep + 1 :]\n        if module_name == \"\":\n            # if we have a module a module only, dirname would return nothing and basename would return the module.\n            module_name = resource_name\n            resource_name = \"\"\n\n        return module_name, resource_name\n\n    @staticmethod\n    def _exists(is_pkg, filename):\n        if is_pkg:\n            module_name, resource_name = ConfigLoader._split_module_and_resource(\n                filename\n            )\n            try:\n                ret = resource_exists(module_name, resource_name)\n            except ImportError:\n                ret = False\n            except ValueError:  # Python 2.7 throws ValueError empty module name sometimes.\n                ret = False\n            except NotImplementedError:\n                raise NotImplementedError(\n                    \"Unable to load {}/{}, are you missing an __init__.py?\".format(\n                        module_name, resource_name\n                    )\n                )\n            # Uncomment to debug issues with configs not getting loaded.\n            # WARNING: breaks integration tests that relies on specified output from the process.\n            # print(\"_exists? {}, {} == {}\".format(module_name, resource_name, ret))\n            return ret\n        else:\n            return os.path.exists(filename)\n\n    def _merge_defaults(self, cfg, defaults, split_at):\n        def get_filename(config_name):\n            filename, ext = os.path.splitext(config_name)\n            if ext == \"\":\n                ext = \".yaml\"\n            return \"{}{}\".format(filename, ext)\n\n        def merge_defaults(merged_cfg, def_list):\n            cfg_with_list = OmegaConf.create(dict(defaults=def_list))\n            for default1 in cfg_with_list.defaults:\n                if isinstance(default1, DictConfig):\n                    is_optional = False\n                    if default1.optional is not None:\n                        is_optional = default1.optional\n                        del default1[\"optional\"]\n                    family = next(iter(default1.keys()))\n                    name = default1[family]\n                    # Name is none if default value is removed\n                    if name is not None and \"_SKIP_\" not in name:\n                        merged_cfg = self._merge_config(\n                            cfg=merged_cfg,\n                            family=family,\n                            name=get_filename(name),\n                            required=not is_optional,\n                        )\n                else:\n                    assert isinstance(default1, str)\n                    if \"_SKIP_\" not in default1:\n                        merged_cfg = self._merge_config(\n                            cfg=merged_cfg,\n                            family=\"\",\n                            name=get_filename(default1),\n                            required=True,\n                        )\n            return merged_cfg\n\n        system_list = []\n        user_list = []\n        for default in defaults:\n            if len(system_list) < split_at:\n                system_list.append(default)\n            else:\n                user_list.append(default)",
  "start_line": 301,
  "end_line": 400,
  "total_lines": 453,
  "is_truncated": false,
  "budget_warning": "Only 8 tool call(s) remaining (22/30 used). Finalize your edits and call submit_patch soon."
}
Generated tokens 103 tokens · stopped: STOP
Wait, let's look at `_load_config_impl`. I need to see how it uses `get_filename` or `_find_config`. I'll read `_load_config_impl` (which should be around 300-400). <channel|><|tool_call>call:read_file{end_line:400,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:301}<tool_call|><|tool_response>

Patch, tests and logs

Final code change Included
diff --git a/conf/config.yaml b/conf/config.yaml
new file mode 100644
index 0000000..bd8f490
--- /dev/null
+++ b/conf/config.yaml
@@ -0,0 +1,2 @@
+defaults:
+  - lr: 0.01
diff --git a/conf/lr/0.01.yaml b/conf/lr/0.01.yaml
new file mode 100644
index 0000000..e69de29
diff --git a/conf/lr/0.1.yaml b/conf/lr/0.1.yaml
new file mode 100644
index 0000000..e69de29
diff --git a/my_app.py b/my_app.py
new file mode 100644
index 0000000..ce77458
--- /dev/null
+++ b/my_app.py
@@ -0,0 +1,9 @@
+import hydra
+from omegaconf import DictConfig
+
+@hydra.main(config_path="conf")
+def my_app(cfg: DictConfig) -> None:
+    print(cfg)
+
+if __name__ == "__main__":
+    my_app()
Test output Included
============================= test session starts ==============================
collected 50 items

tests/test_conf_loader.py ..........................FF.................. [ 92%]
....                                                                     [100%]

=================================== FAILURES ===================================
/hydra/hydra/_internal/config_loader.py:308: hydra.errors.MissingConfigException: Could not load group1/abc.cde, available options:
/hydra/hydra/_internal/config_loader.py:308: hydra.errors.MissingConfigException: Could not load group1/abc.cde, available options:
==================================== PASSES ====================================
- generated xml file: /tmp/rebench-grade-6836123616d9443a9d353e3089d8aab4.xml --
=========================== short test summary info ============================
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_configuration[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_configuration[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_with_missing_default[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_with_missing_default[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_with_missing_optional_default[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_with_missing_optional_default[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_with_optional_default[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_with_optional_default[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_changing_group_in_default[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_changing_group_in_default[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_adding_group_not_in_default[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_adding_group_not_in_default[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_change_run_dir_with_override[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_change_run_dir_with_override[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_change_run_dir_with_config[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_change_run_dir_with_config[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_strict[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_strict[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_history[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_history[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_history_with_basic_launcher[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_history_with_basic_launcher[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_yml_file[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_load_yml_file[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_override_with_equals[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_override_with_equals[pkg://hydra.test_utils.configs]
PASSED tests/test_conf_loader.py::test_merge_default_lists[primary0-merged0-result0]
PASSED tests/test_conf_loader.py::test_merge_default_lists[primary1-merged1-result1]
PASSED tests/test_conf_loader.py::test_merge_default_lists[primary2-merged2-result2]
PASSED tests/test_conf_loader.py::test_merge_default_lists[primary3-merged3-result3]
PASSED tests/test_conf_loader.py::test_default_removal[removing-hydra-launcher-default.yaml-overrides0]
PASSED tests/test_conf_loader.py::test_default_removal[config.yaml-overrides1]
PASSED tests/test_conf_loader.py::test_default_removal[removing-hydra-launcher-default.yaml-overrides2]
PASSED tests/test_conf_loader.py::test_default_removal[config.yaml-overrides3]
PASSED tests/test_conf_loader.py::test_defaults_not_list_exception
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils-]
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils-__init__.py]
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils-configs]
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils-configs/config.yaml]
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils.configs-]
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils.configs-config.yaml]
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils.configs-group1]
PASSED tests/test_conf_loader.py::test_resource_exists[hydra.test_utils.configs-group1/file1.yaml]
PASSED tests/test_conf_loader.py::test_override_hydra_config_value_from_config_file
PASSED tests/test_conf_loader.py::test_override_hydra_config_group_from_config_file
PASSED tests/test_conf_loader.py::test_list_groups
PASSED tests/test_conf_loader.py::test_non_config_group_default
PASSED tests/test_conf_loader.py::test_mixed_composition_order
FAILED tests/test_conf_loader.py::TestConfigLoader::test_compose_file_with_dot[hydra/test_utils/configs]
FAILED tests/test_conf_loader.py::TestConfigLoader::test_compose_file_with_dot[pkg://hydra.test_utils.configs]
========================= 2 failed, 48 passed in 1.10s =========================
Test errors Included
Test report (JUnit) Included
<?xml version="1.0" encoding="utf-8"?><testsuites><testsuite errors="0" failures="2" hostname="5efb28a002c0" name="pytest" skipped="0" tests="50" time="1.100" timestamp="2026-11-14T04:06:41.063684"><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_configuration[hydra/test_utils/configs]" time="0.027" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_configuration[pkg://hydra.test_utils.configs]" time="0.023" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_missing_default[hydra/test_utils/configs]" time="0.023" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_missing_default[pkg://hydra.test_utils.configs]" time="0.024" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_missing_optional_default[hydra/test_utils/configs]" time="0.027" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_missing_optional_default[pkg://hydra.test_utils.configs]" time="0.031" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_optional_default[hydra/test_utils/configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_optional_default[pkg://hydra.test_utils.configs]" time="0.026" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_changing_group_in_default[hydra/test_utils/configs]" time="0.026" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_changing_group_in_default[pkg://hydra.test_utils.configs]" time="0.026" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_adding_group_not_in_default[hydra/test_utils/configs]" time="0.034" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_adding_group_not_in_default[pkg://hydra.test_utils.configs]" time="0.028" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_change_run_dir_with_override[hydra/test_utils/configs]" time="0.024" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_change_run_dir_with_override[pkg://hydra.test_utils.configs]" time="0.024" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_change_run_dir_with_config[hydra/test_utils/configs]" time="0.024" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_change_run_dir_with_config[pkg://hydra.test_utils.configs]" time="0.030" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_strict[hydra/test_utils/configs]" time="0.058" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_strict[pkg://hydra.test_utils.configs]" time="0.058" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_history[hydra/test_utils/configs]" time="0.031" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_history[pkg://hydra.test_utils.configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_history_with_basic_launcher[hydra/test_utils/configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_history_with_basic_launcher[pkg://hydra.test_utils.configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_yml_file[hydra/test_utils/configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_yml_file[pkg://hydra.test_utils.configs]" time="0.030" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_override_with_equals[hydra/test_utils/configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_override_with_equals[pkg://hydra.test_utils.configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_compose_file_with_dot[hydra/test_utils/configs]" time="0.026"><failure message="hydra.errors.MissingConfigException: Could not load group1/abc.cde, available options:&#10;group1:&#10;&#09;file2&#10;&#09;file1&#10;&#09;abc.cde">E   hydra.errors.MissingConfigException: Could not load group1/abc.cde, available options:
    group1:
    	file2
    	file1
    	abc.cde</failure></testcase><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_compose_file_with_dot[pkg://hydra.test_utils.configs]" time="0.027"><failure message="hydra.errors.MissingConfigException: Could not load group1/abc.cde, available options:&#10;group1:&#10;&#09;file2&#10;&#09;file1&#10;&#09;abc.cde">E   hydra.errors.MissingConfigException: Could not load group1/abc.cde, available options:
    group1:
    	file2
    	file1
    	abc.cde</failure></testcase><testcase classname="tests.test_conf_loader" name="test_merge_default_lists[primary0-merged0-result0]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_merge_default_lists[primary1-merged1-result1]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_merge_default_lists[primary2-merged2-result2]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_merge_default_lists[primary3-merged3-result3]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_default_removal[removing-hydra-launcher-default.yaml-overrides0]" time="0.029" /><testcase classname="tests.test_conf_loader" name="test_default_removal[config.yaml-overrides1]" time="0.023" /><testcase classname="tests.test_conf_loader" name="test_default_removal[removing-hydra-launcher-default.yaml-overrides2]" time="0.023" /><testcase classname="tests.test_conf_loader" name="test_default_removal[config.yaml-overrides3]" time="0.023" /><testcase classname="tests.test_conf_loader" name="test_defaults_not_list_exception" time="0.003" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils-]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils-__init__.py]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils-configs]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils-configs/config.yaml]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils.configs-]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils.configs-config.yaml]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils.configs-group1]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_resource_exists[hydra.test_utils.configs-group1/file1.yaml]" time="0.000" /><testcase classname="tests.test_conf_loader" name="test_override_hydra_config_value_from_config_file" time="0.031" /><testcase classname="tests.test_conf_loader" name="test_override_hydra_config_group_from_config_file" time="0.021" /><testcase classname="tests.test_conf_loader" name="test_list_groups" time="0.001" /><testcase classname="tests.test_conf_loader" name="test_non_config_group_default" time="0.028" /><testcase classname="tests.test_conf_loader" name="test_mixed_composition_order" time="0.032" /></testsuite></testsuites>
Agent log Included
  [   0.0s] 📋 System Prompt: You are a principal Python software engineer resolving a repository issue in `/workspace`.
  [   0.0s] 🎯 Task Prompt: You are evaluating a software engineering task for repository facebookresearch/hydra.
  [  30.2s] 💭 (599 chars) "The user is reporting a bug where Hydra fails to load YAML config files that have dots in 
their filenames (e.g., `0.1.ya..."
  [  30.2s] 🔧 run_command (18 lines) mkdir -p conf/lr
  [  30.3s]   → error (exit 0): 
  [  38.9s] 💭 (204 chars) "Ah, it seems `hydra.main` does not take `config_name` as a keyword argument in the version 
installed here. I should chec..."
  [  38.9s] 📖 read_file (hydra/main.py)
  [  38.9s]   ✓ {'status': 'ok', 'filepath': 'hydra/main.py', 'content': '# Copyright (c) Facebook, Inc. and its 
affiliates. All Rights …
  [  58.5s] 💭 (681 chars) "Okay, `hydra.main` only takes `config_path` and `strict`.
By default, it probably looks for `config.yaml` if no config n..."
  [  58.5s] 🔧 run_command (18 lines) mkdir -p conf/lr
  [  58.7s]   → error (exit 0): 
  [  70.9s] 💭 (438 chars) "Success! I have reproduced the bug.
The error is: `hydra.errors.MissingConfigException: Could not load lr/0.1, available..."
  [  70.9s] 📖 read_file (hydra/_internal/config_loader.py)
  [  70.9s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                    
"{}/{}".format(path, gr…
  [ 106.6s] 💭 (1248 chars) "Wait, I see something interesting in `_merge_defaults`:

```python
    def _merge_defaults(self, cfg, defaults, split_at..."
  [ 106.6s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 106.6s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '        return 
self.config_search_path\n\n …
  [ 131.8s] 💭 (1506 chars) "In `_load_config_impl`:

```python
    def _load_config_impl(self, input_file, record_load=True):
        """
        :p..."
  [ 131.8s] 🔧 run_command python3 -c "import os; print(os.path.splitext('0.1'))"
  [ 131.9s]   → ('0', '.1')
  [ 172.3s] 💭 (1723 chars) "Yes, it does.

So when `config_name` is `"0.1"`, `get_filename` returns `"0.1"`.
And then `_merge_config` is called with..."
  [ 172.3s] 🔧 run_command grep -rn "self._merge_config" hydra/_internal/config_loader.py
  [ 172.3s]   → 377:                        merged_cfg = self._merge_config(
  [ 179.5s] 💭 (142 chars) "It's only called within `_merge_defaults`.

What about `_load_config_impl`?
It's called from `_merge_config`.
Is it call..."
  [ 179.5s] 🔧 run_command grep -rn "self._load_config_impl" hydra/_internal/config_loader.py
  [ 179.6s]   → 294:        loaded_cfg = self._load_config_impl(new_cfg)
  [ 182.8s] 💭 (72 chars) "It's called in `_merge_config` and also at line 412. Let's see line 412."
  [ 182.8s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 182.9s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                
user_list.append(default)\n…
  [ 186.9s] 💭 (100 chars) "Line 412 is in `_create_cfg`.
`_create_cfg` is probably called by `load_configuration`. Let's check."
  [ 186.9s] 🔧 run_command grep -rn "self._create_cfg" hydra/_internal/config_loader.py
  [ 187.0s]   → 39:        hydra_cfg = self._create_cfg(cfg_filename="hydra.yaml")
  [ 200.4s] 💭 (490 chars) "Wait, `_create_cfg` is called with `cfg_filename="hydra.yaml"` and `self.config_file`.
If `self.config_file` is `"config..."
  [ 200.4s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 200.5s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '        
self.config_search_path = config_se…
  [ 216.3s] 💭 (583 chars) "In `load_configuration`:
`job_cfg = self._create_cfg(cfg_filename=self.config_file, record_load=False)`

If `self.config..."
  [ 216.3s] 📖 read_file (hydra/_internal/hydra.py)
  [ 216.3s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/hydra.py', 'content': '                    "| {} | {} | {}
|".format(\n   …
  [ 219.0s] 💭 (81 chars) "Wait, I need to see how `config_loader` is created in `hydra/_internal/hydra.py`."
  [ 219.0s] 📖 read_file (hydra/_internal/hydra.py)
  [ 219.1s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/hydra.py', 'content': '                    )\n            
)\n         …
  [ 222.7s] 💭 (89 chars) "Still didn't find where `ConfigLoader` is instantiated. Let's search for `ConfigLoader(`."
  [ 222.7s] 🔧 run_command grep -rn "ConfigLoader(" hydra/_internal/hydra.py
  [ 222.7s]   → 85:        self.config_loader = ConfigLoader(
  [ 225.1s] 💭 (38 chars) "Okay, line 85. Let's see that section."
  [ 225.1s] 📖 read_file (hydra/_internal/hydra.py)
  [ 225.2s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/hydra.py', 'content': '\n        abs_config_dir = 
basedir_prefix + abs_con…
  [ 230.5s] 💭 (88 chars) "And `config_file` is probably passed to the `Hydra` class.
Let's check `Hydra.__init__`."
  [ 230.5s] 📖 read_file (hydra/_internal/hydra.py)
  [ 230.5s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/hydra.py', 'content': '            task_name = 
os.path.splitext(target_fil…
  [ 311.0s] 💭 (282 chars) "The `Hydra` constructor logic for `config_file` seems to only handle the initial primary 
config file.
The bug report say..."
  [ 311.0s] 📖 read_file (hydra/_internal/hydra.py)
  [ 311.1s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/hydra.py', 'content': '        sweeper = 
Plugins.instantiate_sweeper(\n   …
  [ 316.0s] 💭 (180 chars) "Wait, I missed `_load_config`. I read 120-170 but it starts after `return 
sweeper.sweep(arguments=task_overrides)`.
Let'..."
  [ 316.0s] 🔧 run_command grep -n "def _load_config" hydra/_internal/hydra.py
  [ 316.0s]   → 344:    def _load_config(self, overrides):
  [ 318.1s] 💭 (35 chars) "Ah, it's at the end. Let's read it."
  [ 318.1s] 📖 read_file (hydra/_internal/hydra.py)
  [ 318.2s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/hydra.py', 'content': '        self._print_plugins()\n    
self._print_…
  [ 327.4s] 💭 (379 chars) "It calls `self.config_loader.load_configuration(overrides)`. So we are back to 
`ConfigLoader`.
I've already seen `Config..."
  [ 327.4s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 327.5s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '# Copyright (c) Facebook, 
Inc. and its affi…
  [ 345.2s] 💭 (849 chars) "Wait, I see `_find_config` and `exists_in_search_path`.
Let's see if `_find_config` uses `get_filename` or something sim..."
  [ 345.2s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 345.3s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                with 
resource_stream(module…
  [ 351.9s] 💭 (165 chars) "Wait, let's look at `_load_config_impl`. I need to see how it uses `get_filename` or 
`_find_config`.

I'll read `_load_c..."
  [ 351.9s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 351.9s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                    options
= self.get_grou…
Native result row
{
  "agent_error": "Agent exceeded session timeout (7.5 min)",
  "duration_seconds": 471.3,
  "error": "Test failures/errors recorded in JUnit XML (failures=2, errors=0)",
  "grade": {
    "collected_tests": 50,
    "competition_junit_ok": false,
    "error": "Test failures/errors recorded in JUnit XML (failures=2, errors=0)",
    "required_issues_count": 2,
    "resolved": false,
    "status_counts": {
      "FAILED": 2,
      "PASSED": 48
    },
    "strict_clean_patch": true,
    "test_exit_code": 1
  },
  "instance_id": "facebookresearch__hydra-273",
  "pass_idx": 0,
  "patch_chars": 665,
  "phase1_seconds": 469.57,
  "repo": "facebookresearch/hydra",
  "request_log_path": "/kaggle-root/working/r31/rollouts_X/requests/facebookresearch__hydra-273__p0__r3.jsonl",
  "resolved": false,
  "rollout_idx": 3,
  "run_key": "facebookresearch__hydra-273__p0__r3",
  "strict_clean_patch": true,
  "tool_calls": 22,
  "total_llm_calls": 22,
  "trace_path": "/kaggle-root/working/r31/rollouts_X/traces/trace_facebookresearch__hydra-273__p0__r3.json"
}