python-trio / python-trio/trio

Trio does not work with PyPy3 on Windows

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Windows
Dominant language
Python
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Description

Apparently on pypy3+Windows, most trio functions raise NotImplementedError: signal.set_wakeup_fd is not implemented on Windows. Either somebody has to add that to pypy, or trio has to work around the limitation.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the failure with Trio on PyPy3 for Windows and inspect the paths that call signal.set_wakeup_fd. Determine whether the fix belongs in PyPy or Trio, then verify that the affected Trio functions no longer raise NotImplementedError on that platform.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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