using nox and uv only to test multiple python versions #6579
Description
Hi,
I'm struggling to use a pure uv only environment that can use nox for multiple python versions...
Dockerfile
FROM ubuntu:24.04
ARG DEBIAN_FRONTEND=noninteractive
ENV TZ=Etc/GMT
ENV PATH="$PATH:/root/.local/bin"
ENV NOX_DEFAULT_VENV_BACKEND=uv
ARG VERSIONS="3.12 3.11 3.10 3.9"
COPY --from=ghcr.io/astral-sh/uv:latest /uv /bin/uv
RUN uv python install ${VERSIONS} && \
uv tool install nox[uv]
RUN apt-get update -qy && apt-get upgrade -qy && \
apt-get install -qy --no-install-recommends \
ca-certificates curl gnupg2 git openssh-client
noxfile.py
"""noxfile."""
from nox import session
py_versions = ["3.12", "3.11"]
@session(python=py_versions)
def tests(session):
session.install(".")
session.install("pytest", "pytest-cov")
session.run("pytest")
the uv python install 3.x doesn't create any shims (like you would have with pyenv), so they are not known to the shell with python3.11 ...
I can call nox from uv per python versions, which works, but kind of beats the point of nox.
uv run --python 3.11 nox -s tests
uv run --python 3.12 nox -s tests
For each of the command the other environment would be skipped. Example:
nox > Running session tests-3.11
nox > Missing interpreters will error by default on CI systems.
nox > Session tests-3.11 skipped: Python interpreter 3.11 not found.
(therefore not specifying the different python versions in the noxfile.)
Has anyone else played with this already? (and got it to work?)
My goal is to use versions installed by uv only and preferably have it run automatically against all desired python versions.
uv version: 0.3.3