[dailyun]

Strip features from both the dependency and package when exporting constraints. With lock format 1.1, VCS dependencies can otherwise retain extras such as foo[feature], which pip rejects in a constraints file. Requirements exports keep their extras.

Fixes #210.

Validation:

• Four real-lock cases cover constraints/requirements with lock formats 1.1/2.1. The original source fails only the legacy constraints case; the other three pass.
• All 182 tests pass against the patched source with Poetry 2.5.1/core 2.5.0. All 116 Exporter tests also pass with the minimum Poetry 2.1.0/core 2.1.0.
• Pre-commit passes for the changed files. Mypy reports the same baseline diagnostics with and without the patch: one unused ignore on Poetry 2.5, and 21 existing compatibility diagnostics on 2.1. No unrelated type fixes are included.

The tests use synthetic VCS metadata without cloning or contacting the repository. OpenAI Codex assisted with the fix and tests.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud