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Importing nexus fails on Windows: agent_detect.py imports fcntl at module level #10
Description
On Windows, importing the package fails: src/nexus_memory/agent_detect.py imports fcntl at module level, and fcntl only exists on POSIX. The autouse fixture in tests/conftest.py imports it for every test, so on Windows the suite stops at collection: 2312 errors, 0 passed on main (GitHub Actions, windows-latest).
I mentioned this when reporting the issue fixed in 69dbac8. A fix follows in a pull request.
Fix: #11
Activity
Neboy72 commentedon Nov 1, 2026
Fixed and shipped.
agent_detect.py(andfuel_chain.py, same pattern) now importfcntlinside atry/except ImportError, so the module loads on Windows withfcntl = Noneand the lock falls back tomsvcrt.locking. The Windows job of the suite is green: 2497 passed, 49 skipped, 0 failed (run 41315197565). The fix is part of v0.22.44, released today: https://github.com/Neboy72/nexus-memory/releases/tag/v0.22.44Thank you for the report, it was the first one that made the whole Windows picture visible.
simin-yuan commentedon Nov 1, 2026
Thanks, Nebojsa. Confirmed on Windows with v0.22.44: the package imports cleanly, and the agent_detect and guardrails tests pass (80 passed, 2 skipped). While running the suite on Python 3.13 I hit one small thing: a test module fails to collect there because it imports os through pathlib; #14 fixes that.