Use Python 3.8 on Cygwin CI #2
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This is for a recent problem where "pip install -U" in the virtual environment in a Cygwin test job seems to block indefinitely on downloading the wheel package itself (not other packages' wheels).
Maybe this will overcome the next blockage, which is the codecov PyPI package, downloading a .tar.gz file.
This doesn't fix the bigger issue, it just addresses something from the last commit.
This is not a usable solution, but it is useful for troubleshooting.
And don't upgrade it or other PyPI packages.
This tries with an older pip, but if the problem is the build rather than the version, then it would also help.
This won't fix it but is diagnostic, to reveal the URL for the coverage package, so I can see what happens when that is installed more manually.
Since it has to verify previous work.
EliahKagan
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Jan 28, 2024
The latest currently packaged version of Python 3.9 for Cygwin is 3.9.18 (provided by the Cygwin package python39 at version 3.9.18-1). That version, at least as we are using it, has a problem where pip has begun to block on some PyPI package downloads. In 73ebcfa (#2), I worked around this problem by downgrading the minor version of Python to 3.8. But it is better to use 3.9 if we can, since it is currently the latest minor version of Python in the Cygwin repositories, and also because (relating to that) it is used more often, and thus probably used more often with GitPython, than 3.8. This upgrades Python on Cygwin but not all the way. It upgrades it to the latest (or latest currently available) patch version of 3.9 packaged for Cygwin of those that strictly precede 3.9.18 where the problem occurs. That version is 3.9.16, provided by the Cygwin package python39 at version 3.9.16-1. This version may eventually no longer be available for download from Cygwin's repositories, so hopefully a real solution or better workaround will be found by then, or perhaps a future update to the package itself will fix the problem. I also tried some more other stuff since finding 3.8 to work in 73ebcfa. Changes since then are listed below. They can be examined in full detail, with individual diffs and CI results, at #3. * Try Python 3.9 with other details the same Changing it to Python 3.8 worked, but I want to check that it was actually the use of Python 3.8, rather than other seemingly small changes made to support using Python 3.8, that made the difference. * Revert "Try Python 3.9 with other details the same" This reverts commit b55cbfb. * Try 3.9 again, with both python39=3.9.16-1 python39-pip=23.0.1-1 * Back to 3.8; try another GitHub Action Python 3.8 worked with cygwin-install-action, but I want to make the change to setup-cygwin by itself first before trying it with 3.9, in case I am using setup-cygwin incorrectly. * Try 3.9 with this setup-cygwin action * Try pinning with setup-cygwin * Try not pinning, but no -U for PyPA, with setup-cygwin Pinning and skipping -U for PyPA packages worked. Let's see if it was really pinning that made the difference. * Try pinning just python39-pip Pinning works, and merely omitting the -U for PyPA package doesn't. Examining the output of runs that used install-cygwin-action and attemped pinning Cygwin package versions shows newer versions were installed, whereas pinning is really happening with setup-cygwin. This tries pinning just the Cygwin package for pip, rather than for Python 3.9. I don't expect this to work. * Try pinning just python39=3.9.16-1 And not pip, but this does not add back the -U for PyPA yet. * Add back -U for PyPA packages * Try pinning python39=3.9.16-1 with old action/everything This is extremely unlikely to work, I just want to check. * Try just setup-cygwin and pinning python39=3.9.16-1 That is, this puts back all the other stuff the way it was on the main branch when the breakage occurred, besides changing from cygwin-install-action to setup-cygwin to make pinning work and using it to get version 3.9.16-1 of the Cygwin python39 package.
EliahKagan
added a commit
that referenced
this pull request
Jan 28, 2024
The latest currently packaged version of Python 3.9 for Cygwin is 3.9.18 (provided by the Cygwin package python39 at version 3.9.18-1). That version, at least as we are using it, has a problem where pip has begun to block on some PyPI package downloads. In 73ebcfa (#2), I worked around this problem by downgrading the minor version of Python to 3.8. But it is better to use 3.9 if we can, since it is currently the latest minor version of Python in the Cygwin repositories, and also because (relating to that) it is used more often, and thus probably used more often with GitPython, than 3.8. This upgrades Python on Cygwin but not all the way. It upgrades it to the latest (or latest currently available) patch version of 3.9 packaged for Cygwin of those that strictly precede 3.9.18 where the problem occurs. That version is 3.9.16, provided by the Cygwin package python39 at version 3.9.16-1. This version may eventually no longer be available for download from Cygwin's repositories, so hopefully a real solution or better workaround will be found by then, or perhaps a future update to the package itself will fix the problem. I also tried some more other stuff since finding 3.8 to work in 73ebcfa. Changes since then are listed below. They can be examined in full detail, with individual diffs and CI results, at #3. * Try Python 3.9 with other details the same Changing it to Python 3.8 worked, but I want to check that it was actually the use of Python 3.8, rather than other seemingly small changes made to support using Python 3.8, that made the difference. * Revert "Try Python 3.9 with other details the same" This reverts commit b55cbfb. * Try 3.9 again, with both python39=3.9.16-1 python39-pip=23.0.1-1 * Back to 3.8; try another GitHub Action Python 3.8 worked with cygwin-install-action, but I want to make the change to setup-cygwin by itself first before trying it with 3.9, in case I am using setup-cygwin incorrectly. * Try 3.9 with this setup-cygwin action * Try pinning with setup-cygwin * Try not pinning, but no -U for PyPA, with setup-cygwin Pinning and skipping -U for PyPA packages worked. Let's see if it was really pinning that made the difference. * Try pinning just python39-pip Pinning works, and merely omitting the -U for PyPA package doesn't. Examining the output of runs that used install-cygwin-action and attemped pinning Cygwin package versions shows newer versions were installed, whereas pinning is really happening with setup-cygwin. This tries pinning just the Cygwin package for pip, rather than for Python 3.9. I don't expect this to work. * Try pinning just python39=3.9.16-1 And not pip, but this does not add back the -U for PyPA yet. * Add back -U for PyPA packages * Try pinning python39=3.9.16-1 with old action/everything This is extremely unlikely to work, I just want to check. * Try just setup-cygwin and pinning python39=3.9.16-1 That is, this puts back all the other stuff the way it was on the main branch when the breakage occurred, besides changing from cygwin-install-action to setup-cygwin to make pinning work and using it to get version 3.9.16-1 of the Cygwin python39 package.
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This uses Python 3.8.16 (provided by the Cygwin package python38 at version 3.8.16-1), to work around the problem that pip has begun to block on some PyPI package downloads when Python 3.9.18 (provided by the Cygwin package python39 at version 3.9.18-1) is used.