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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"pre-commit install-hooks should run without git tree","articleBody":"### search tried in the issue tracker\r\n\r\ninstall-hooks\r\n\r\n### describe your issue\r\n\r\nI want to build a docker container in which pre-commit hooks are already installed but running `pre-commit install-hooks -c .pre-commit-config.yaml` fails: `An error has occurred: FatalError: git failed. Is it installed, and are you in a Git repository directory?`\r\n\r\nThere are various workarounds such as copying the .git directory inside the container or creating a temporary git repo but I think it's useful to just allow `install-hooks` to work with just a config file\r\n\r\n### pre-commit --version\r\n\r\npre-commit 2.19.0\r\n\r\n### .pre-commit-config.yaml\r\n\r\n```yaml\r\n# See https://pre-commit.com for more information\r\n# See https://pre-commit.com/hooks.html for more hooks\r\nrepos:\r\n  - repo: https://github.com/pre-commit/pre-commit-hooks\r\n    rev: v4.2.0\r\n    hooks:\r\n      - id: trailing-whitespace\r\n      - id: end-of-file-fixer\r\n      - id: check-yaml\r\n      - id: check-added-large-files\r\n```\r\n\r\n\r\n### ~/.cache/pre-commit/pre-commit.log (if present)\r\nAn error has occurred: FatalError: git failed. Is it installed, and are you in a Git repository directory?\r\nCheck the log at /root/.cache/pre-commit/pre-commit.log\r\n### version information\r\n\r\n```\r\npre-commit version: 2.19.0\r\ngit --version: git version 2.34.1\r\nsys.version:\r\n    3.10.4 (main, Apr  2 2022, 09:04:19) [GCC 11.2.0]\r\nsys.executable: /usr/bin/python3\r\nos.name: posix\r\nsys.platform: linux\r\n```\r\n\r\n### error information\r\n\r\n```\r\nAn error has occurred: FatalError: git failed. Is it installed, and are you in a Git repository directory?\r\n```\r\n\r\n```\r\nTraceback (most recent call last):\r\n  File \"/usr/local/lib/python3.10/dist-packages/pre_commit/git.py\", line 58, in get_root\r\n    cmd_output('git', 'rev-parse', '--show-cdup')[1].strip(),\r\n  File \"/usr/local/lib/python3.10/dist-packages/pre_commit/util.py\", line 152, in cmd_output\r\n    returncode, stdout_b, stderr_b = cmd_output_b(*cmd, **kwargs)\r\n  File \"/usr/local/lib/python3.10/dist-packages/pre_commit/util.py\", line 146, in cmd_output_b\r\n    raise CalledProcessError(returncode, cmd, retcode, stdout_b, stderr_b)\r\npre_commit.util.CalledProcessError: command: ('/usr/bin/git', 'rev-parse', '--show-cdup')\r\nreturn code: 128\r\nexpected return code: 0\r\nstdout: (none)\r\nstderr:\r\n    fatal: not a git repository (or any of the parent directories): .git\r\n\r\n\r\nDuring handling of the above exception, another exception occurred:\r\n\r\nTraceback (most recent call last):\r\n  File \"/usr/local/lib/python3.10/dist-packages/pre_commit/error_handler.py\", line 73, in error_handler\r\n    yield\r\n  File \"/usr/local/lib/python3.10/dist-packages/pre_commit/main.py\", line 344, in main\r\n    _adjust_args_and_chdir(args)\r\n  File \"/usr/local/lib/python3.10/dist-packages/pre_commit/main.py\", line 147, in _adjust_args_and_chdir\r\n    toplevel = git.get_root()\r\n  File \"/usr/local/lib/python3.10/dist-packages/pre_commit/git.py\", line 64, in get_root\r\n    raise FatalError(\r\npre_commit.errors.FatalError: git failed. Is it installed, and are you in a Git repository directory?\r\n```","author":{"url":"https://github.com/cdleonard","@type":"Person","name":"cdleonard"},"datePublished":"2022-05-06T10:25:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/2378/pre-commit/issues/2378"}