tox-uv not working with pypy3 in windows

[emdneto]

I'm trying to use tox-uv in a project I'm already using tox. Everything is working fine in Ubuntu, but in Windows, the CI is failing. The same setup with pure tox is working fine.

https://github.com/open-telemetry/opentelemetry-python/actions/runs/14219379510/job/39843656537?pr=4516

Run tox -e pypy3-test-opentelemetry-exporter-otlp-proto-common -- -ra
pypy3-test-opentelemetry-exporter-otlp-proto-common: venv> C:\hostedtoolcache\windows\PyPy\3.8.16\x86\Scripts\uv.exe venv -p pypy3 --allow-existing D:\a\opentelemetry-python\opentelemetry-python\.tox\pypy3-test-opentelemetry-exporter-otlp-proto-common
pypy3-test-opentelemetry-exporter-otlp-proto-common: skipped because could not find python interpreter with spec(s): pypy3
  pypy3-test-opentelemetry-exporter-otlp-proto-common: SKIP (1.47 seconds)
  evaluation failed :( (2.38 seconds)

open-telemetry/opentelemetry-python#4516

I'm not sure if it's something with tox-uv or uv itself, so just let me know if you have any idea.