February 2021 in Darker: Addressing Git-related issues and pre-commit hook challenges

[akaihola]

This month, our focus shifted towards resolving Git-related issues and improving Darker's compatibility with pre-commit hooks. We made progress in understanding and addressing a critical bug where Darker crashes when GIT_DIR is set to a relative path (#112). This issue, discovered during attempts to use Darker in a git commit hook, highlighted the need for our tool to be more robust in handling various git configurations.

We explored several approaches to resolve the GIT_DIR issue, including normalizing git environment variables and simplifying our directory handling logic. The discussion revealed the complexity of supporting different IDE setups and git workflows. We're considering a solution that accounts for various combinations of GIT_DIR and GIT_WORK_TREE settings to ensure Darker functions correctly across different environments.

Additionally, we addressed a new issue related to pre-commit hook integration (#113). Users reported errors when trying to use Darker with pre-commit, specifically regarding the PRE_COMMIT_FROM_REF and PRE_COMMIT_TO_REF environment variables. This highlighted a potential misunderstanding in how Darker interacts with pre-commit hooks during different git operations. We're investigating whether adjustments are needed in our documentation or implementation to clarify the correct usage of Darker with pre-commit, particularly for commit hooks versus push hooks.

---

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    "start_date": "2021-01-10"
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