Should we drop support for Cygwin?

Windows Subsystem for Linux has taken lots of mindshare from Cygwin, slowing its development to the point where its default Python is now v3.9, which is end-of-life. Given that our README.md suggests a supported version of Python, we will soon stop supporting and testing Python 3.9.

Will Cygwin upgrade to a supported version of Python? If not, what would be the impact of us dropping support for Cygwin?

• Mentions of Cygwin in code, issues, pull requests: https://github.com/search?q=repo%3Anodejs%2Fnode-gyp+cygwin

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Perhaps this solves things? https://cygwin.com/packages/summary/python312.html vs. https://cygwin.com/packages/summary/python3.html (v3.9).

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Node-gyp usage on Cygwin is blocked by:

• cygwin/cygwin-install-action#55