## Summary
- strip PEP 508 environment markers before extracting uv versions from
dependency entries
- cover dependency-group pins with and without whitespace before the
marker
- cover requirements-style pins with markers
Fixes#920
## Validation
- npm ci --ignore-scripts
- npm run all
Refs: pi-session 019f316a-4108-7975-892f-ee5bf8abc7c3
setup-uv gets confused when there are backslashes in `requirements.txt`.
This changes the regex to ignore backslashes.
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Co-authored-by: axm2 <>
