Multiple virtualenvs

[pawamoy]

Is there a way to create and use one virtualenv per Python version?

Currently, if I change my toolchain pin and run rye sync, it recreates the venv from scratch. That means that if I want to run pytest on multiple Python versions, Rye will recreate the venv and reinstall all dependencies each time. I don't use tox or nox.

Ideally I'd like an option to tell Rye to suffix the venv name with {major}{minor}.

Example:

for py in 3.8 3.9 3.10 3.11; do
  rye pin --relaxed $py
  rye sync  # creates .venv38, .venv39, etc.
done

I could then run my tests suite on all supported Python versions:

for py in 3.8 3.9 3.10 3.11; do
  rye pin --relaxed $py
  rye run pytest tests
done

[doolio]

Rye to suffix the venv name with {major}{minor}

+1 for this naming convention

For multiple environments hatch does this well. It creates them by default but could be improved further to not include pytest in the environment where the package is installed.