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ROLLOUT 1 · facebookresearch/hydra

facebookresearch__hydra-273

Not solved
520 stotal time
19tool calls
20model calls
3,955tokens generated
186,957prompt tokens read

Empty agent patch

⚠ The request log has 20 model calls but the trace has 21 agent calls, so tokens are listed separately instead of beside each turn.

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 86 s163 tokens out3,991 prompt tokens
The user is reporting a bug in `hydra` where configuration files with dots in their base name (e.g., `0.1.yaml`) are not handled correctly, leading to a `MissingConfigException`. It seems that the code might be incorrectly stripping or missing the `.yaml` extension when a dot is present in the base name.

The problem statement points to `hydra/_internal/config_loader.py` and specifically `_merge_config`.

Let's start by searching for the relevant code in `hydra/_internal/config_loader.py`.
TOOL CALL · run_command
{
  "command": "grep -rn --include=\"*.py\" \"MissingConfigException\" hydra/_internal/config_loader.py"
}
Result of run_command 253 characters
{
  "status": "ok",
  "stdout": "18:from ..errors import MissingConfigException\n299:                    raise MissingConfigException(msg, new_cfg)\n308:                    raise MissingConfigException(msg, new_cfg, options)\n",
  "stderr": "",
  "exit_code": 0
}
Turn 2at 95 s121 tokens out4,241 prompt tokens
Okay, let's examine `hydra/_internal/config_loader.py` around the `MissingConfigException` raise points.
The traceback in the issue description mentions `_merge_config` at line 301, and `merge_defaults` at line 374.
Wait, the traceback is from a specific version. Let's read the file.
TOOL CALL · read_file
{
  "end_line": 320,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 280
}
Result of read_file 1,631 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                            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:",
  "start_line": 280,
  "end_line": 320,
  "total_lines": 453,
  "is_truncated": false
}
Turn 3at 115 s264 tokens out4,808 prompt tokens
The traceback says:
`hydra/_internal/config_loader.py`, line 301, in `_merge_config`
raise `MissingConfigException`.

In the provided code snippet:
Line 299 is `raise MissingConfigException(msg, new_cfg)`.
Line 308 is `raise MissingConfigException(msg, new_cfg, options)`.

The bug report says:
`hydra.errors.MissingConfigException: Could not load lr/0.1, available options:\nlr:\n\t0.01\n\t0.1`

This means `_merge_config` called `_load_config_impl(new_cfg)` with `new_cfg = "lr/0.1"`, and it returned `None`.
`get_group_options("lr")` returned `['0.01', '0.1']`.

Let's look at `get_group_options` and `_load_config_impl`.
TOOL CALL · read_file
{
  "end_line": 280,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 200
}
Result of read_file 3,855 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "\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(\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)",
  "start_line": 200,
  "end_line": 280,
  "total_lines": 453,
  "is_truncated": false
}
Turn 4at 130 s239 tokens out6,035 prompt tokens
Wait, look at `get_group_options` for non-pkg paths:

```python
            else:
                group_path = "{}/{}".format(path, group_name)
                if os.path.isdir(group_path):
                    all_files = os.listdir(group_path)
                    files = []
                    for file in all_files:
                        full_path = os.path.join(group_path, group_name, file)
```
Wait, `full_path = os.path.join(group_path, group_name, file)`.
If `group_path` is already `path/group_name`, then `full_path` becomes `path/group_name/group_name/file`. This looks like a bug! But maybe not the one reported.

Let's continue reading `get_group_options` a bit more.
TOOL CALL · read_file
{
  "end_line": 260,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 240
}
Result of read_file 1,068 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "        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(",
  "start_line": 240,
  "end_line": 260,
  "total_lines": 453,
  "is_truncated": false
}
Turn 5at 136 s56 tokens out6,571 prompt tokens
I need to read the rest of `get_group_options`.
TOOL CALL · read_file
{
  "end_line": 280,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 260
}
Result of read_file 1,211 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                            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)",
  "start_line": 260,
  "end_line": 280,
  "total_lines": 453,
  "is_truncated": false
}
Turn 6at 141 s77 tokens out6,925 prompt tokens
Wait, the `get_group_options` in the previous `read_file` was cut off?

Let me read `get_group_options` fully.
TOOL CALL · read_file
{
  "end_line": 280,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 220
}
Result of read_file 3,022 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                )\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(\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)",
  "start_line": 220,
  "end_line": 280,
  "total_lines": 453,
  "is_truncated": false
}
Turn 7at 148 s64 tokens out7,737 prompt tokens
I keep reading the same part of `get_group_options`. I need to see more of it.
TOOL CALL · read_file
{
  "end_line": 300,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 260
}
Result of read_file 1,913 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "                            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": 260,
  "end_line": 300,
  "total_lines": 453,
  "is_truncated": false
}
Turn 8at 175 s543 tokens out8,285 prompt tokens
Okay, now I see the full `get_group_options`:

```python
    def get_group_options(self, group_name, file_type="file"):
        options = []
        for search_path in self.config_search_path.config_search_path:
            search_path = search_path.path
            is_pkg, path = self._split_path(search_path)
            files = []
            if is_pkg:
                # ... pkg path logic ...
                for file in all_files:
                    if (
                        file_type == "dir"
                        and resource_isdir(
                            module_name, os.path.join(group_name, file)
                        )
                        and file != "__pycache__"
                    ):
                        files.append(file)
                    elif file_type == "file" and file.endswith(".yaml"):
                        files.append(file[0 : -len(".yaml")])
            else:
                group_path = "{}/{}".format(path, group_name)
                if os.path.isdir(group_path):
                    all_files = os.listdir(group_path)
                    files = []
                    for file in all_files:
                        full_path = os.path.join(group_path, group_name, file) # <--- BUG HERE?
                        if (
                            file_type == "dir"
                            and os.path.isdir(full_path)
                            and file != "__pycache__"
                        ):
                            files.append(file)
                        elif file_type == "file" and file.endswith(".yaml"):
                            files.append(file[0 : -len(".yaml")])
            options.extend(files)
        return options
```

Wait, `full_path = os.path.join(group_path, group_name, file)`.
Since `group_path = "{}/{}".format(path, group_name)`, this is indeed `path/group_name/group_name/file`. This is definitely a bug, but maybe not the one causing the Reported issue.

Now let's look at `_find_config`. It is used by `_load_config_impl`.
TOOL CALL · read_file
{
  "end_line": 220,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 140
}
Result of read_file 3,365 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "        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                )",
  "start_line": 140,
  "end_line": 220,
  "total_lines": 453,
  "is_truncated": false
}
Turn 9at 177 s63 tokens out9,745 prompt tokens
I need to find `_find_config`. It must be above `_load_config_impl`.
TOOL CALL · read_file
{
  "end_line": 140,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 80
}
Result of read_file 2,286 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "        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 = {}",
  "start_line": 80,
  "end_line": 140,
  "total_lines": 453,
  "is_truncated": false
}
Turn 10at 189 s202 tokens out10,507 prompt tokens
Wait, `_find_config` is:

```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
```

And it uses `self._exists(is_pkg, config_file)`. Let's find `_exists`. It's likely a static method or a helper.
Turn 11at 189 s
<|tool_call>call,run_command{command:<|"|>grep -rn "def _exists" hydra/_internal/config_loader.py<|"|>}<tool_call|>
System instructions 286 characters
Your previous response reached the token limit before the tool call finished closing (<|tool_call|> was cut off). Do NOT repeat your prior reasoning in thought—emit your next tool call immediately, and if calling edit_file or write_file, split the change into smaller incremental edits.
Turn 12at 195 s36 tokens out9,344 prompt tokens
TOOL CALL · run_command
{
  "command": "grep -rn \"def _exists\" hydra/_internal/config_loader.py"
}
Result of run_command 100 characters
{
  "status": "ok",
  "stdout": "334:    def _exists(is_pkg, filename):\n",
  "stderr": "",
  "exit_code": 0
}
Turn 13at 198 s41 tokens out9,430 prompt tokens
TOOL CALL · read_file
{
  "end_line": 360,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 330
}
Result of read_file 1,440 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "\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)",
  "start_line": 330,
  "end_line": 360,
  "total_lines": 453,
  "is_truncated": false
}
Turn 14at 202 s40 tokens out9,836 prompt tokens
TOOL CALL · read_file
{
  "end_line": 390,
  "filepath": "hydra/_internal/config_loader.py`,start_line:360"
}
Result of read_file 463 characters
{
  "status": "error",
  "error_type": "FileReadError",
  "error_message": "404 Client Error for http+docker://localhost/v1.52/containers/35ab538548eab84f6b6327d201216065ccf499bd911e0aedb77a3cdbaf49adb2/archive?path=%2Fworkspace%2Fhydra%2F_internal%2Fconfig_loader.py%60%2Cstart_line%3A360: Not Found (\"Could not find the file /workspace/hydra/_internal/config_loader.py`,start_line:360 in container 35ab538548eab84f6b6327d201216065ccf499bd911e0aedb77a3cdbaf49adb2\")"
}
Turn 15at 206 s41 tokens out10,116 prompt tokens
TOOL CALL · read_file
{
  "end_line": 500,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 360
}
Result of read_file 3,951 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "            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)\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:\n            self._validate_defaults(cfg.defaults)\n        return cfg\n\n    @staticmethod\n    def _validate_defaults(defaults):\n        valid_example = \"\"\"\n        Example of a valid defaults:\n        defaults:\n          - dataset: imagenet\n          - model: alexnet\n            optional: true\n          - optimizer: nesterov\n        \"\"\"\n        if not isinstance(defaults, ListConfig):\n            raise ValueError(\n                \"defaults must be a list because composition is order sensitive, \"\n                + valid_example\n            )\n\n        for default in defaults:\n            assert isinstance(default, DictConfig) or isinstance(default, str)\n            if isinstance(default, DictConfig):\n                assert len(default) in (1, 2)\n                if len(default) == 2:\n                    assert default.optional is not None and isinstance(\n                        default.optional, bool\n                    )\n                else:\n                    # optional can't be the only config key in a default\n                    assert default.optional is None, \"Missing config key\"\n            elif isinstance(default, str):\n                # single file to load\n                pass",
  "start_line": 360,
  "end_line": 453,
  "total_lines": 453,
  "is_truncated": false
}
Turn 16at 297 s1,144 tokens out11,085 prompt tokens
Okay, I've analyzed the code. The bug is that when a config file name has a dot in it (e.g., `0.1.yaml`), `os.path.splitext` will split it into `0.1` and `.yaml` if it's just `0.1.yaml`. Wait, no.

Let's look at `get_filename` in `_merge_defaults`:
```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")` will return `('0', '.1')`.
Then `ext` is `'.1'`, which is not `""`.
So it returns `filename + ext`, which is `"0" + ".1" = "0.1"`.
Wait, that's actually what it does. But wait, if it's `0.1`, we WANT it to be `0.1.yaml`.

But `os.path.splitext("0.1")` thinks `.1` is the extension.
So `ext` is `".1"`, and it doesn't add `.yaml`.
Thus it returns `"0.1"`.
Then `_merge_config` is called with `name="0.1"`.
`_merge_config` calls `_load_config_impl("lr/0.1")` (if family is `lr`).
`_load_config_impl` calls `_find_config("lr/0.1")`.
`_find_config` checks `self._exists(is_pkg, "path/to/lr/0.1")`.
`_exists` for non-pkg does `os.path.exists("path/to/lr/0.1")`.
But the file is actually `path/to/lr/0.1.yaml`.
So `os.path.exists` returns `False`.
Then `_load_config_impl` returns `None`.
Then `_merge_config` raises `MissingConfigException`.

Indeed, `os.path.splitext` is not the right tool here if we want to check if it has a known config extension.

The user says: "When creating yaml file that has dot in the base name, `config_loader.py` erroneously misses the `.yaml` extension".

If `config_name` is `0.1`, we want `0.1.yaml`.
If `config_name` is `my_config.yaml`, we want `my_config.yaml`.

Actually, Hydra usually assumes `.yaml` if no extension is provided.
But `os.path.splitext` sees any dot as the start of an extension.

To fix this, we should check if the extension is actually a known config extension (like `.yaml` or `.yml`).

Wait, does Hydra support other extensions?
The code I saw earlier:
```python
                        elif file_type == "file" and file.endswith(".yaml"):
                            files.append(file[0 : -len(".yaml")])
```
It seems it specifically looks for `.yaml`.

Let's verify with a reproduction script.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nimport os\nimport shutil\nfrom hydra._internal.config_search_path import ConfigSearchPath\nfrom hydra._internal.config_loader import ConfigLoader\nfrom omegaconf import OmegaConf\n\n# Setup reproduction directory\nconf_dir = \"conf\"\nlr_dir = os.path.join(conf_dir, \"lr\")\nos.makedirs(lr_dir, exist_ok=True)\n\nwith open(os.path.join(lr_dir, \"0.1.yaml\"), \"w\") as f:\n    f.write(\"value: 0.1\")\nwith open(os.path.join(lr_dir, \"0.01.yaml\"), \"w\") as f:\n    f.write(\"value: 0.01\")\n\n# Initialize Hydra config loader internals\nsearch_path = ConfigSearchPath([ConfigSearchPath(\"path\", conf_dir, \"file\")])\nloader = ConfigLoader(search_path=search_path)\n\ntry:\n    # Simulate loading lr=0.1\n    # This mimics how Hydra would call it via _merge_defaults\n    # In _merge_defaults, it calls _merge_config(cfg, family='lr', name='0.1', required=True)\n    # Which calls _load_config_impl('lr/0.1')\n    \n    print(\"Attempting to load lr/0.1...\")\n    cfg = loader._merge_config(OmegaConf.create(), \"lr\", \"0.1\", True)\n    print(\"Successfully loaded cfg:\", cfg)\nexcept Exception as e:\n    import traceback\n    traceback.print_exc()\nfinally:\n    shutil.rmtree(conf_dir)\nPY\n"
}
Result of run_command 419 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "Traceback (most recent call last):\n  File \"<stdin>\", line 18, in <module>\nTypeError: __init__() takes 1 positional argument but 4 were given\n",
  "details": {
    "stdout": "",
    "stderr": "Traceback (most recent call last):\n  File \"<stdin>\", line 18, in <module>\nTypeError: __init__() takes 1 positional argument but 4 were given\n",
    "exit_code": 1
  }
}
Turn 17at 301 s63 tokens out12,373 prompt tokens
Ah, `ConfigLoader` initialization might be different. Let's check `ConfigLoader.__init__`.
TOOL CALL · read_file
{
  "end_line": 100,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 50
}
Result of read_file 2,232 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_loader.py",
  "content": "\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",
  "start_line": 50,
  "end_line": 100,
  "total_lines": 453,
  "is_truncated": false
}
Turn 18at 305 s58 tokens out13,119 prompt tokens
Wait, I missed `__init__`. Let's read the beginning of `ConfigLoader`.
TOOL CALL · read_file
{
  "end_line": 50,
  "filepath": "hydra/_internal/config_loader.py",
  "start_line": 1
}
Result of read_file 1,692 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",
  "start_line": 1,
  "end_line": 50,
  "total_lines": 453,
  "is_truncated": false
}
Turn 19at 317 s269 tokens out13,693 prompt tokens
Okay, `__init__` takes `config_file, strict_cfg, config_search_path`.

Let's fix the reproduction script.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nimport os\nimport shutil\nfrom hydra._internal.config_search_path import ConfigSearchPath\nfrom hydra._internal.config_loader import ConfigLoader\nfrom omegaconf import OmegaConf\n\n# Setup reproduction directory\nconf_dir = \"conf\"\nlr_dir = os.path.join(conf_dir, \"lr\")\nos.makedirs(lr_dir, exist_ok=True)\n\nwith open(os.path.join(lr_dir, \"0.1.yaml\"), \"w\") as f:\n    f.write(\"value: 0.1\")\nwith open(os.path.join(lr_dir, \"0.01.yaml\"), \"w\") as f:\n    f.write(\"value: 0.01\")\n\n# Initialize Hydra config loader internals\nsearch_path = ConfigSearchPath([ ()) ]) # This is not right. ConfigSearchPath initialization\n# Let me check ConfigSearchPath.__init__\nPY\n"
}
Result of run_command 523 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "  File \"<stdin>\", line 18\n    search_path = ConfigSearchPath([ ()) ]) # This is not right. ConfigSearchPath initialization\n                                       ^\nSyntaxError: invalid syntax\n",
  "details": {
    "stdout": "",
    "stderr": "  File \"<stdin>\", line 18\n    search_path = ConfigSearchPath([ ()) ]) # This is not right. ConfigSearchPath initialization\n                                       ^\nSyntaxError: invalid syntax\n",
    "exit_code": 1
  }
}
Turn 20at 320 s46 tokens out14,113 prompt tokens
Let's check `hydra/_internal/config_search_path.py`.
TOOL CALL · read_file
{
  "filepath": "hydra/_internal/config_search_path.py"
}
Result of read_file 3,127 characters
{
  "status": "ok",
  "filepath": "hydra/_internal/config_search_path.py",
  "content": "# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved\n\n\nclass ConfigSearchPath:\n    def __init__(self):\n        self.config_search_path = []\n\n    def find_last_match(self, reference):\n        return self.find_match(reference, reverse=True)\n\n    def find_first_match(self, reference):\n        return self.find_match(reference, reverse=False)\n\n    def find_match(self, reference, reverse):\n        p = self.config_search_path\n        if reverse:\n            iterator = zip(reversed(range(len(p))), reversed(p))\n        else:\n            iterator = zip(range(len(p)), p)\n        for idx, sp in iterator:\n            has_prov = reference.provider is not None\n            has_path = reference.path is not None\n            if has_prov and has_path:\n                if reference.provider == sp.provider and reference.path == sp.path:\n                    return idx\n            elif has_prov:\n                if reference.provider == sp.provider:\n                    return idx\n            elif has_path:\n                if reference.path == sp.path:\n                    return idx\n            else:\n                assert False\n        return -1\n\n    def append(self, provider, path, anchor=None):\n        \"\"\"\n        :param provider: who is providing this search path, can be Hydra,\n               the @hydra.main() function, or individual plugins or libraries.\n        :param path: path element, can be a file system path or a package path (For example pkg://hydra.conf)\n        :param anchor: if string, acts as provider. if SearchPath can be used to match against provider and / or path\n        :return:\n        \"\"\"\n        if anchor is None:\n            self.config_search_path.append(SearchPath(provider, path))\n        else:\n            if isinstance(anchor, str):\n                anchor = SearchPath(anchor, None)\n\n            idx = self.find_last_match(anchor)\n            if idx != -1:\n                self.config_search_path.insert(idx + 1, SearchPath(provider, path))\n            else:\n                self.append(provider, path, anchor=None)\n\n    def prepend(self, provider, path, anchor=None):\n        if anchor is None:\n            self.config_search_path.insert(0, SearchPath(provider, path))\n        else:\n            if isinstance(anchor, str):\n                anchor = SearchPath(anchor, None)\n\n            idx = self.find_first_match(anchor)\n            if idx != -1:\n                if idx > 0:\n                    self.config_search_path.insert(idx, SearchPath(provider, path))\n                else:\n                    self.prepend(provider, path, None)\n            else:\n                self.prepend(provider, path, None)\n\n\nclass SearchPath:\n    def __init__(self, provider, search_path):\n        self.provider = provider\n        self.path = search_path\n\n    def __str__(self):\n        return \"provider={}, path={}\".format(self.provider, self.path)",
  "start_line": 1,
  "end_line": 79,
  "total_lines": 79,
  "is_truncated": false
}
Turn 21at 336 s425 tokens out15,003 prompt tokens
Okay, so `ConfigSearchPath` is a container of `SearchPath` objects.

Let's try the reproduction script again.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nimport os\nimport shutil\nfrom hydra._internal.config_search_path import ConfigSearchPath\nfrom hydra._internal.config_loader import ConfigLoader\nfrom omegaconf import OmegaConf\n\n# Setup reproduction directory\nconf_dir = \"conf\"\nlr_dir = os.path.join(conf_dir, \"lr\")\nos.makedirs(lr_dir, exist_ok=True)\n\nwith open(os.path.join(lr_dir, \"0.1.yaml\"), \"w\") as f:\n    f.write(\"value: 0.1\")\nwith open(os.path.join(lr_dir, \"0.01.yaml\"), \"w\") as f:\n    f.write(\"value: 0.01\")\n\n# Initialize Hydra config loader internals\nsearch_path = ConfigSearchPath()\nsearch_path.append(\"repro\", conf_dir)\nloader = ConfigLoader(config_file=None, strict_cfg=False, config_search_path=search_path)\n\ntry:\n    # Simulate loading lr=0.1\n    # In _merge_defaults, it calls _merge_config(cfg, family='lr', name='0.1', required=True)\n    # Use _merge_config to see if it fails\n    print(\"Attempting to load lr/0.1...\")\n    cfg = loader._merge_config(OmegaConf.create(), \"lr\", \"0.1\", True)\n    print(\"Successfully loaded cfg:\", cfg)\nexcept Exception as e:\n    import traceback\n    traceback.print_exc()\nfinally:\n    shutil.rmtree(conf_dir)\nPY\n"
}
Result of run_command 409 characters
{
  "status": "ok",
  "stdout": "Attempting to load lr/0.1...\n",
  "stderr": "Traceback (most recent call last):\n  File \"<stdin>\", line 27, in <module>\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": 0
}

Model calls (not matched to turns)

Generated tokens 163 tokens · stopped: STOP
The user is reporting a bug in `hydra` where configuration files with dots in their base name (e.g., `0.1.yaml`) are not handled correctly, leading to a `MissingConfigException`. It seems that the code might be incorrectly stripping or missing the `.yaml` extension when a dot is present in the base name.

The problem statement points to `hydra/_internal/config_loader.py` and specifically `_merge_config`.

Let's start by searching for the relevant code in `hydra/_internal/config_loader.py`.
<|channel>thought The user is reporting a bug in `hydra` where configuration files with dots in their base name (e.g., `0.1.yaml`) are not handled correctly, leading to a `MissingConfigException`. It seems that the code might be incorrectly stripping or missing the `.yaml` extension when a dot is present in the base name. The problem statement points to `hydra/_internal/config_loader.py` and specifically `_merge_config`. Let's start by searching for the relevant code in `hydra/_internal/config_loader.py`.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn --include="*.py" "MissingConfigException" hydra/_internal/config_loader.py<|"|>}<tool_call|><|tool_response>
Generated tokens 121 tokens · stopped: STOP
Okay, let's examine `hydra/_internal/config_loader.py` around the `MissingConfigException` raise points.
The traceback in the issue description mentions `_merge_config` at line 301, and `merge_defaults` at line 374.
Wait, the traceback is from a specific version. Let's read the file.
Okay, let's examine `hydra/_internal/config_loader.py` around the `MissingConfigException` raise points. The traceback in the issue description mentions `_merge_config` at line 301, and `merge_defaults` at line 374. Wait, the traceback is from a specific version. Let's read the file.<channel|><|tool_call>call:read_file{filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:280,end_line:320}<tool_call|><|tool_response>
Generated tokens 264 tokens · stopped: STOP
The traceback says:
`hydra/_internal/config_loader.py`, line 301, in `_merge_config`
raise `MissingConfigException`.

In the provided code snippet:
Line 299 is `raise MissingConfigException(msg, new_cfg)`.
Line 308 is `raise MissingConfigException(msg, new_cfg, options)`.

The bug report says:
`hydra.errors.MissingConfigException: Could not load lr/0.1, available options:\nlr:\n\t0.01\n\t0.1`

This means `_merge_config` called `_load_config_impl(new_cfg)` with `new_cfg = "lr/0.1"`, and it returned `None`.
`get_group_options("lr")` returned `['0.01', '0.1']`.

Let's look at `get_group_options` and `_load_config_impl`.
The traceback says: `hydra/_internal/config_loader.py`, line 301, in `_merge_config` raise `MissingConfigException`. In the provided code snippet: Line 299 is `raise MissingConfigException(msg, new_cfg)`. Line 308 is `raise MissingConfigException(msg, new_cfg, options)`. The bug report says: `hydra.errors.MissingConfigException: Could not load lr/0.1, available options:\nlr:\n\t0.01\n\t0.1` This means `_merge_config` called `_load_config_impl(new_cfg)` with `new_cfg = "lr/0.1"`, and it returned `None`. `get_group_options("lr")` returned `['0.01', '0.1']`. Let's look at `get_group_options` and `_load_config_impl`. <channel|><|tool_call>call:read_file{end_line:280,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:200}<tool_call|><|tool_response>
Generated tokens 239 tokens · stopped: STOP
Wait, look at `get_group_options` for non-pkg paths:

```python
            else:
                group_path = "{}/{}".format(path, group_name)
                if os.path.isdir(group_path):
                    all_files = os.listdir(group_path)
                    files = []
                    for file in all_files:
                        full_path = os.path.join(group_path, group_name, file)
```
Wait, `full_path = os.path.join(group_path, group_name, file)`.
If `group_path` is already `path/group_name`, then `full_path` becomes `path/group_name/group_name/file`. This looks like a bug! But maybe not the one reported.

Let's continue reading `get_group_options` a bit more.
Wait, look at `get_group_options` for non-pkg paths: ```python else: group_path = "{}/{}".format(path, group_name) if os.path.isdir(group_path): all_files = os.listdir(group_path) files = [] for file in all_files: full_path = os.path.join(group_path, group_name, file) ``` Wait, `full_path = os.path.join(group_path, group_name, file)`. If `group_path` is already `path/group_name`, then `full_path` becomes `path/group_name/group_name/file`. This looks like a bug! But maybe not the one reported. Let's continue reading `get_group_options` a bit more. <channel|><|tool_call>call:read_file{end_line:260,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:240}<tool_call|><|tool_response>
Generated tokens 56 tokens · stopped: STOP
I need to read the rest of `get_group_options`.
I need to read the rest of `get_group_options`. <channel|><|tool_call>call:read_file{end_line:280,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:260}<tool_call|><|tool_response>
Generated tokens 77 tokens · stopped: STOP
Wait, the `get_group_options` in the previous `read_file` was cut off?

Let me read `get_group_options` fully.

Wait, the `get_group_options` in the previous `read_file` was cut off? Let me read `get_group_options` fully. <channel|><|tool_call>call:read_file{end_line:280,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:220}<tool_call|><|tool_response>
Generated tokens 64 tokens · stopped: STOP
I keep reading the same part of `get_group_options`. I need to see more of it.

I keep reading the same part of `get_group_options`. I need to see more of it. <channel|><|tool_call>call:read_file{end_line:300,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:260}<tool_call|><|tool_response>
Generated tokens 543 tokens · stopped: STOP
Okay, now I see the full `get_group_options`:

```python
    def get_group_options(self, group_name, file_type="file"):
        options = []
        for search_path in self.config_search_path.config_search_path:
            search_path = search_path.path
            is_pkg, path = self._split_path(search_path)
            files = []
            if is_pkg:
                # ... pkg path logic ...
                for file in all_files:
                    if (
                        file_type == "dir"
                        and resource_isdir(
                            module_name, os.path.join(group_name, file)
                        )
                        and file != "__pycache__"
                    ):
                        files.append(file)
                    elif file_type == "file" and file.endswith(".yaml"):
                        files.append(file[0 : -len(".yaml")])
            else:
                group_path = "{}/{}".format(path, group_name)
                if os.path.isdir(group_path):
                    all_files = os.listdir(group_path)
                    files = []
                    for file in all_files:
                        full_path = os.path.join(group_path, group_name, file) # <--- BUG HERE?
                        if (
                            file_type == "dir"
                            and os.path.isdir(full_path)
                            and file != "__pycache__"
                        ):
                            files.append(file)
                        elif file_type == "file" and file.endswith(".yaml"):
                            files.append(file[0 : -len(".yaml")])
            options.extend(files)
        return options
```

Wait, `full_path = os.path.join(group_path, group_name, file)`.
Since `group_path = "{}/{}".format(path, group_name)`, this is indeed `path/group_name/group_name/file`. This is definitely a bug, but maybe not the one causing the Reported issue.

Now let's look at `_find_config`. It is used by `_load_config_impl`.

Okay, now I see the full `get_group_options`: ```python def get_group_options(self, group_name, file_type="file"): options = [] for search_path in self.config_search_path.config_search_path: search_path = search_path.path is_pkg, path = self._split_path(search_path) files = [] if is_pkg: # ... pkg path logic ... for file in all_files: if ( file_type == "dir" and resource_isdir( module_name, os.path.join(group_name, file) ) and file != "__pycache__" ): files.append(file) elif file_type == "file" and file.endswith(".yaml"): files.append(file[0 : -len(".yaml")]) else: group_path = "{}/{}".format(path, group_name) if os.path.isdir(group_path): all_files = os.listdir(group_path) files = [] for file in all_files: full_path = os.path.join(group_path, group_name, file) # <--- BUG HERE? if ( file_type == "dir" and os.path.isdir(full_path) and file != "__pycache__" ): files.append(file) elif file_type == "file" and file.endswith(".yaml"): files.append(file[0 : -len(".yaml")]) options.extend(files) return options ``` Wait, `full_path = os.path.join(group_path, group_name, file)`. Since `group_path = "{}/{}".format(path, group_name)`, this is indeed `path/group_name/group_name/file`. This is definitely a bug, but maybe not the one causing the Reported issue. Now let's look at `_find_config`. It is used by `_load_config_impl`. <channel|><|tool_call>call:read_file{end_line:220,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:140}<tool_call|><|tool_response>
Generated tokens 63 tokens · stopped: STOP
I need to find `_find_config`. It must be above `_load_config_impl`.

I need to find `_find_config`. It must be above `_load_config_impl`. <channel|><|tool_call>call:read_file{end_line:140,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:80}<tool_call|><|tool_response>
Generated tokens 202 tokens · stopped: STOP
Wait, `_find_config` is:

```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
```

And it uses `self._exists(is_pkg, config_file)`. Let's find `_exists`. It's likely a static method or a helper.

Wait, `_find_config` is: ```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 ``` And it uses `self._exists(is_pkg, config_file)`. Let's find `_exists`. It's likely a static method or a helper. <channel|><|tool_call>call,run_command{command:<|"|>grep -rn "def _exists" hydra/_internal/config_loader.py<|"|>}<tool_call|><|tool_response>
Generated tokens 36 tokens · stopped: STOP
<|channel>thought <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "def _exists" hydra/_internal/config_loader.py<|"|>}<tool_call|><|tool_response>
Generated tokens 41 tokens · stopped: STOP
<channel|><|tool_call>call:read_file{end_line:360,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:330}<tool_call|><|tool_response>
Generated tokens 40 tokens · stopped: STOP
<channel|><|tool_call>call:read_file{end_line:390,filepath:<|"|>hydra/_internal/config_loader.py`,start_line:360}<tool_call|><|tool_response>
Generated tokens 41 tokens · stopped: STOP
<channel|><|tool_call>call:read_file{end_line:500,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:360}<tool_call|><|tool_response>
Generated tokens 1,144 tokens · stopped: STOP
Okay, I've analyzed the code. The bug is that when a config file name has a dot in it (e.g., `0.1.yaml`), `os.path.splitext` will split it into `0.1` and `.yaml` if it's just `0.1.yaml`. Wait, no.

Let's look at `get_filename` in `_merge_defaults`:
```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")` will return `('0', '.1')`.
Then `ext` is `'.1'`, which is not `""`.
So it returns `filename + ext`, which is `"0" + ".1" = "0.1"`.
Wait, that's actually what it does. But wait, if it's `0.1`, we WANT it to be `0.1.yaml`.

But `os.path.splitext("0.1")` thinks `.1` is the extension.
So `ext` is `".1"`, and it doesn't add `.yaml`.
Thus it returns `"0.1"`.
Then `_merge_config` is called with `name="0.1"`.
`_merge_config` calls `_load_config_impl("lr/0.1")` (if family is `lr`).
`_load_config_impl` calls `_find_config("lr/0.1")`.
`_find_config` checks `self._exists(is_pkg, "path/to/lr/0.1")`.
`_exists` for non-pkg does `os.path.exists("path/to/lr/0.1")`.
But the file is actually `path/to/lr/0.1.yaml`.
So `os.path.exists` returns `False`.
Then `_load_config_impl` returns `None`.
Then `_merge_config` raises `MissingConfigException`.

Indeed, `os.path.splitext` is not the right tool here if we want to check if it has a known config extension.

The user says: "When creating yaml file that has dot in the base name, `config_loader.py` erroneously misses the `.yaml` extension".

If `config_name` is `0.1`, we want `0.1.yaml`.
If `config_name` is `my_config.yaml`, we want `my_config.yaml`.

Actually, Hydra usually assumes `.yaml` if no extension is provided.
But `os.path.splitext` sees any dot as the start of an extension.

To fix this, we should check if the extension is actually a known config extension (like `.yaml` or `.yml`).

Wait, does Hydra support other extensions?
The code I saw earlier:
```python
                        elif file_type == "file" and file.endswith(".yaml"):
                            files.append(file[0 : -len(".yaml")])
```
It seems it specifically looks for `.yaml`.

Let's verify with a reproduction script.
Okay, I've analyzed the code. The bug is that when a config file name has a dot in it (e.g., `0.1.yaml`), `os.path.splitext` will split it into `0.1` and `.yaml` if it's just `0.1.yaml`. Wait, no. Let's look at `get_filename` in `_merge_defaults`: ```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")` will return `('0', '.1')`. Then `ext` is `'.1'`, which is not `""`. So it returns `filename + ext`, which is `"0" + ".1" = "0.1"`. Wait, that's actually what it does. But wait, if it's `0.1`, we WANT it to be `0.1.yaml`. But `os.path.splitext("0.1")` thinks `.1` is the extension. So `ext` is `".1"`, and it doesn't add `.yaml`. Thus it returns `"0.1"`. Then `_merge_config` is called with `name="0.1"`. `_merge_config` calls `_load_config_impl("lr/0.1")` (if family is `lr`). `_load_config_impl` calls `_find_config("lr/0.1")`. `_find_config` checks `self._exists(is_pkg, "path/to/lr/0.1")`. `_exists` for non-pkg does `os.path.exists("path/to/lr/0.1")`. But the file is actually `path/to/lr/0.1.yaml`. So `os.path.exists` returns `False`. Then `_load_config_impl` returns `None`. Then `_merge_config` raises `MissingConfigException`. Indeed, `os.path.splitext` is not the right tool here if we want to check if it has a known config extension. The user says: "When creating yaml file that has dot in the base name, `config_loader.py` erroneously misses the `.yaml` extension". If `config_name` is `0.1`, we want `0.1.yaml`. If `config_name` is `my_config.yaml`, we want `my_config.yaml`. Actually, Hydra usually assumes `.yaml` if no extension is provided. But `os.path.splitext` sees any dot as the start of an extension. To fix this, we should check if the extension is actually a known config extension (like `.yaml` or `.yml`). Wait, does Hydra support other extensions? The code I saw earlier: ```python elif file_type == "file" and file.endswith(".yaml"): files.append(file[0 : -len(".yaml")]) ``` It seems it specifically looks for `.yaml`. Let's verify with a reproduction script.<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' import os import shutil from hydra._internal.config_search_path import ConfigSearchPath from hydra._internal.config_loader import ConfigLoader from omegaconf import OmegaConf # Setup reproduction directory conf_dir = "conf" lr_dir = os.path.join(conf_dir, "lr") os.makedirs(lr_dir, exist_ok=True) with open(os.path.join(lr_dir, "0.1.yaml"), "w") as f: f.write("value: 0.1") with open(os.path.join(lr_dir, "0.01.yaml"), "w") as f: f.write("value: 0.01") # Initialize Hydra config loader internals search_path = ConfigSearchPath([ConfigSearchPath("path", conf_dir, "file")]) loader = ConfigLoader(search_path=search_path) try: # Simulate loading lr=0.1 # This mimics how Hydra would call it via _merge_defaults # In _merge_defaults, it calls _merge_config(cfg, family='lr', name='0.1', required=True) # Which calls _load_config_impl('lr/0.1') print("Attempting to load lr/0.1...") cfg = loader._merge_config(OmegaConf.create(), "lr", "0.1", True) print("Successfully loaded cfg:", cfg) except Exception as e: import traceback traceback.print_exc() finally: shutil.rmtree(conf_dir) PY <|"|>}<tool_call|><|tool_response>
Generated tokens 63 tokens · stopped: STOP
Ah, `ConfigLoader` initialization might be different. Let's check `ConfigLoader.__init__`.
Ah, `ConfigLoader` initialization might be different. Let's check `ConfigLoader.__init__`. <channel|><|tool_call>call:read_file{end_line:100,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:50}<tool_call|><|tool_response>
Generated tokens 58 tokens · stopped: STOP
Wait, I missed `__init__`. Let's read the beginning of `ConfigLoader`.
Wait, I missed `__init__`. Let's read the beginning of `ConfigLoader`.<channel|><|tool_call>call:read_file{end_line:50,filepath:<|"|>hydra/_internal/config_loader.py<|"|>,start_line:1}<tool_call|><|tool_response>
Generated tokens 269 tokens · stopped: STOP
Okay, `__init__` takes `config_file, strict_cfg, config_search_path`.

Let's fix the reproduction script.
Okay, `__init__` takes `config_file, strict_cfg, config_search_path`. Let's fix the reproduction script. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' import os import shutil from hydra._internal.config_search_path import ConfigSearchPath from hydra._internal.config_loader import ConfigLoader from omegaconf import OmegaConf # Setup reproduction directory conf_dir = "conf" lr_dir = os.path.join(conf_dir, "lr") os.makedirs(lr_dir, exist_ok=True) with open(os.path.join(lr_dir, "0.1.yaml"), "w") as f: f.write("value: 0.1") with open(os.path.join(lr_dir, "0.01.yaml"), "w") as f: f.write("value: 0.01") # Initialize Hydra config loader internals search_path = ConfigSearchPath([ ()) ]) # This is not right. ConfigSearchPath initialization # Let me check ConfigSearchPath.__init__ PY <|"|>}<tool_call|><|tool_response>
Generated tokens 46 tokens · stopped: STOP
Let's check `hydra/_internal/config_search_path.py`.
Let's check `hydra/_internal/config_search_path.py`. <channel|><|tool_call>call:read_file{filepath:<|"|>hydra/_internal/config_search_path.py<|"|>}<tool_call|><|tool_response>
Generated tokens 425 tokens · stopped: STOP
Okay, so `ConfigSearchPath` is a container of `SearchPath` objects.

Let's try the reproduction script again.

Okay, so `ConfigSearchPath` is a container of `SearchPath` objects. Let's try the reproduction script again. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' import os import shutil from hydra._internal.config_search_path import ConfigSearchPath from hydra._internal.config_loader import ConfigLoader from omegaconf import OmegaConf # Setup reproduction directory conf_dir = "conf" lr_dir = os.path.join(conf_dir, "lr") os.makedirs(lr_dir, exist_ok=True) with open(os.path.join(lr_dir, "0.1.yaml"), "w") as f: f.write("value: 0.1") with open(os.path.join(lr_dir, "0.01.yaml"), "w") as f: f.write("value: 0.01") # Initialize Hydra config loader internals search_path = ConfigSearchPath() search_path.append("repro", conf_dir) loader = ConfigLoader(config_file=None, strict_cfg=False, config_search_path=search_path) try: # Simulate loading lr=0.1 # In _merge_defaults, it calls _merge_config(cfg, family='lr', name='0.1', required=True) # Use _merge_config to see if it fails print("Attempting to load lr/0.1...") cfg = loader._merge_config(OmegaConf.create(), "lr", "0.1", True) print("Successfully loaded cfg:", cfg) except Exception as e: import traceback traceback.print_exc() finally: shutil.rmtree(conf_dir) PY <|"|>}<tool_call|><|tool_response>

Patch, tests and logs

Final code change Included
Test output Included
============================= test session starts ==============================
collected 50 items

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

==================================== PASSES ====================================
- generated xml file: /tmp/rebench-grade-8eff1960b5eb4127b605f3dd03c15b37.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::TestConfigLoader::test_compose_file_with_dot[hydra/test_utils/configs]
PASSED tests/test_conf_loader.py::TestConfigLoader::test_compose_file_with_dot[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
============================== 50 passed in 1.11s ==============================
Test errors Included
Test report (JUnit) Included
<?xml version="1.0" encoding="utf-8"?><testsuites><testsuite errors="0" failures="0" hostname="0b835bd9c6de" name="pytest" skipped="0" tests="50" time="1.105" timestamp="2026-11-14T02:57:37.613289"><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_configuration[hydra/test_utils/configs]" time="0.029" /><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="0.024" /><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="0.024" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_missing_optional_default[pkg://hydra.test_utils.configs]" time="0.030" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_with_optional_default[hydra/test_utils/configs]" time="0.026" /><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="0.033" /><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="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_change_run_dir_with_override[pkg://hydra.test_utils.configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_change_run_dir_with_config[hydra/test_utils/configs]" time="0.025" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_change_run_dir_with_config[pkg://hydra.test_utils.configs]" time="0.028" /><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="0.059" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_load_history[hydra/test_utils/configs]" time="0.029" /><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="0.029" /><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="0.030" /><testcase classname="tests.test_conf_loader.TestConfigLoader" name="test_compose_file_with_dot[pkg://hydra.test_utils.configs]" time="0.031" /><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="0.031" /><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="0.026" /><testcase classname="tests.test_conf_loader" name="test_override_hydra_config_group_from_config_file" time="0.025" /><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="0.033" /></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.
  [  18.3s] 💭 (494 chars) "The user is reporting a bug in `hydra` where configuration files with dots in their base 
name (e.g., `0.1.yaml`) are not..."
  [  18.3s] 🔧 run_command grep -rn --include="*.py" "MissingConfigException" hydra/_internal/config_loader
  [  18.3s]   → 18:from ..errors import MissingConfigException
  [  27.8s] 💭 (284 chars) "Okay, let's examine `hydra/_internal/config_loader.py` around the `MissingConfigException` 
raise points.
The traceback i..."
  [  27.8s] 📖 read_file (hydra/_internal/config_loader.py)
  [  27.9s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                           
files.append(fi…
  [  48.0s] 💭 (624 chars) "The traceback says:
`hydra/_internal/config_loader.py`, line 301, in `_merge_config`
raise `MissingConfigException`.

In..."
  [  48.0s] 📖 read_file (hydra/_internal/config_loader.py)
  [  48.0s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '\n    def 
_load_config_impl(self, input_fil…
  [  62.7s] 💭 (682 chars) "Wait, look at `get_group_options` for non-pkg paths:

```python
            else:
                group_path = "{}/{}".f..."
  [  62.7s] 📖 read_file (hydra/_internal/config_loader.py)
  [  62.8s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '        return ret\n\n    
def get_group_opt…
  [  69.0s] 💭 (47 chars) "I need to read the rest of `get_group_options`."
  [  69.0s] 📖 read_file (hydra/_internal/config_loader.py)
  [  69.0s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                           
and resource_is…
  [  73.5s] 💭 (110 chars) "Wait, the `get_group_options` in the previous `read_file` was cut off?

Let me read `get_group_options` fully."
  [  73.5s] 📖 read_file (hydra/_internal/config_loader.py)
  [  73.5s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                )\n        
with res…
  [  80.3s] 💭 (78 chars) "I keep reading the same part of `get_group_options`. I need to see more of it."
  [  80.3s] 📖 read_file (hydra/_internal/config_loader.py)
  [  80.4s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '                           
and resource_is…
  [ 107.2s] 💭 (2030 chars) "Okay, now I see the full `get_group_options`:

```python
    def get_group_options(self, group_name, file_type="file"):
..."
  [ 107.2s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 107.2s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '        key_to_idx = {}\n  
for idx, d…
  [ 109.8s] 💭 (68 chars) "I need to find `_find_config`. It must be above `_load_config_impl`."
  [ 109.8s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 109.8s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '        overrides = 
master_config.hydra.ove…
  [ 121.6s] 💭 (576 chars) "Wait, `_find_config` is:

```python
    def _find_config(self, filepath):
        found_search_path = None
        for s..."
  [ 121.6s] ✅ Agent finished: <|tool_call>call,run_command{command:<|"|>grep -rn "def _exists" 
hydra/_internal/config_loader.py<|"|>}<tool_call|>
  [ 121.6s] 🎯 Task Prompt: Your previous response reached the token limit before the tool call finished closing 
(<|tool_call|> was cut off). Do NOT...
  [ 127.3s] 🔧 run_command grep -rn "def _exists" hydra/_internal/config_loader.py
  [ 127.4s]   → 334:    def _exists(is_pkg, filename):
  [ 130.3s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 130.4s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '\n        return 
module_name, resource_name…
  [ 135.1s] 📖 read_file (hydra/_internal/config_loader.py`,start_line:360)
  [ 135.1s]   ❌ {'status': 'error', 'error_type': 'FileReadError', 'error_message': '404 Client Error for 
http+docker://localhost/v1.52/…
  [ 138.4s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 138.4s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '            filename, ext =
os.path.splitex…
  [ 229.2s] 💭 (2268 chars) "Okay, I've analyzed the code. The bug is that when a config file name has a dot in it 
(e.g., `0.1.yaml`), `os.path.split..."
  [ 229.2s] 🔧 run_command (36 lines) python3 - <<'PY'
  [ 229.3s]   → error (exit 0): 
  [ 233.5s] 💭 (90 chars) "Ah, `ConfigLoader` initialization might be different. Let's check `ConfigLoader.__init__`."
  [ 233.5s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 233.5s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '\n        
consumed_free_job_defaults = self…
  [ 237.5s] 💭 (70 chars) "Wait, I missed `__init__`. Let's read the beginning of `ConfigLoader`."
  [ 237.5s] 📖 read_file (hydra/_internal/config_loader.py)
  [ 237.6s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_loader.py', 'content': '# Copyright (c) Facebook, 
Inc. and its affi…
  [ 249.6s] 💭 (105 chars) "Okay, `__init__` takes `config_file, strict_cfg, config_search_path`.

Let's fix the reproduction script."
  [ 249.6s] 🔧 run_command (21 lines) python3 - <<'PY'
  [ 249.6s]   → error (exit 0): 
  [ 252.3s] 💭 (52 chars) "Let's check `hydra/_internal/config_search_path.py`."
  [ 252.3s] 📖 read_file (hydra/_internal/config_search_path.py)
  [ 252.3s]   ✓ {'status': 'ok', 'filepath': 'hydra/_internal/config_search_path.py', 'content': '# Copyright (c) 
Facebook, Inc. and its…
  [ 268.4s] 💭 (109 chars) "Okay, so `ConfigSearchPath` is a container of `SearchPath` objects.

Let's try the reproduction script again."
  [ 268.4s] 🔧 run_command (35 lines) python3 - <<'PY'
  [ 268.5s]   → Attempting to load lr/0.1...
Native result row
{
  "agent_error": "Agent exceeded session timeout (7.5 min)",
  "duration_seconds": 519.68,
  "error": "Empty agent patch",
  "grade": {
    "error": "Empty agent patch",
    "resolved": false,
    "strict_clean_patch": false,
    "test_exit_code": -1
  },
  "instance_id": "facebookresearch__hydra-273",
  "pass_idx": 0,
  "patch_chars": 0,
  "phase1_seconds": 519.68,
  "repo": "facebookresearch/hydra",
  "request_log_path": "/kaggle-root/working/r31/rollouts_X/requests/facebookresearch__hydra-273__p0__r1.jsonl",
  "resolved": false,
  "rollout_idx": 1,
  "run_key": "facebookresearch__hydra-273__p0__r1",
  "strict_clean_patch": false,
  "tool_calls": 19,
  "total_llm_calls": 20,
  "trace_path": "/kaggle-root/working/r31/rollouts_X/traces/trace_facebookresearch__hydra-273__p0__r1.json"
}