matrix-org / matrix-org/backend-meta
Cache and restore `black`'s cache directory
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enhancement
- Dominant language
- No language data
- Stars
- 1
- Forks
- 4
- PR merge metrics
- No merged PRs in 30d
Description
Synapse spends 20 seconds running black. Might be able to trim this down.
Black's cache dir can be set using the env var BLACK_CACHE_DIR, see https://black.readthedocs.io/en/stable/usage_and_configuration/file_collection_and_discovery.html.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the shared CI configuration used by Synapse and identify where Black runs. Read Black's cache-directory documentation and verify how BLACK_CACHE_DIR can be configured and persisted between runs. Done means the CI job restores and saves Black's cache so repeated runs avoid the current roughly 20-second cost.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- ci-cd
- Issue type
- Feature
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100