Maturin is not able to auto-discover Python 3.10 on Windows

[bernardelli]

Auto-discover can't find Python 3.10 on Windows.

I believe that the regex expression Regex::new(r" -(\d).(\d)-(\d+)(?: .*)?") at this line is responsible for that.
Shouldn't it be Regex::new(r" -(\d).(\d+)-(\d+)(?: .*)?")?.

For context, see the script below:

choco install -y rust-ms --no-progress
# install stable python versions
foreach ($PyVersion in @("3.6.8", "3.7.9", "3.8.10", "3.9.6"))
      { choco install -my python --version=${PyVersion} --no-progress }
# install python previews
foreach ($PyVersion in @("3.10.0-rc1"))
      { choco install -my python --version=${PyVersion}  --pre --no-progress }
pip install --no-cache-dir maturin
maturin publish [...]

I don't thing this is relevant, but I'm using pip version 21.1.3 and pyo3 bindings.

By the way, thanks for the amazing work!

[messense]

Would you like send a PR to fix it?

[bernardelli]

Sure, I am going to do it in the next few days.