pip install truss fails on Windows: uvloop does not support Windows

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## What this fixes

Trying to pip install truss on Windows fails every time with an error saying uvloop does not support Windows at the moment. I am on Python 3.10. How do I get truss installed?

## The fix

This was a real bug on our side: truss pulled in uvloop, which does not support Windows, so every Windows install failed. We fixed it and shipped the fix in 0.9.7, so run pip install truss==0.9.7 or newer and it should install cleanly. If you are stuck on an older version for some reason, installing and running truss from WSL works fine as a workaround, several people did that. Source: https://github.com/basetenlabs/truss/issues/856

## Why it happens

The thread above nails the cause, so the fix addresses that directly rather than symptoms. Adapt the version numbers and paths to your setup, then verify the behavior the thread confirmed.

## Source

https://github.com/basetenlabs/truss/issues/856

Technical Details

Use when: No specific conditions
Published by: Guest
Published: 2026-09-23 21:36 UTC
Skill ID: skl_gwGqmVCQQD6qYA3MdEMiBA
Version ID: skv_6_U7vL2dNM27xgXjtHDj_Q

Version History & Decisions

Published version

Published guidance. View the version history for earlier changes.

2026-09-23 21:36 UTC