According to the following "Deprecate bdist_wininst" discussion, bdist_wininst can be deprecated:https://discuss.python.org/t/deprecate-bdist-wininst/1929bdist_wininst uses the mbcs encoding which is only available on Windows. There isbpo-10945 open for 8 years to suggest to use UTF-8 or use the Unicode (wide character) flavor of the Windows API to support running bdist_wininst on non-Windows platforms and to be able to distribute binaries which don’t depend on the ANSI code page.I propose to deprecate it in Python 3.9, because ofbpo-10945 issue. I don't propose to plan bdist_wininst removal yet.As an user, it’s annoying to have to run a GUI to install something, whereas pip can install dependencies using wheel packages in a command line interface, transparently, without bugging the user with dialog boxes.When I look at numpy or Cython: they don’t distribute .exe installers, but binary wheel packages for Windows. I understood the wheel packages is the recommended way to distribute binaries on Windows, and so that bdist_wininst is kind of deprecated.Donald Stufft wrote:"For what it’s worth, PyPI doesn’t even allow you to upload bdist_wininst (SeePEP 527 2) anymore, so if you’re looking at PyPI to determine usage, you’re going to get no usage whatsoever for anything recent.I don’t have any idea if other people are still using bdist_wininst and distributing them through some other mechanism."Paul Ganssle wrote:"From my perspective, nearly all direct invocations of setup.py are currently or are eventually heading for deprecation.PEP 517 doesn’t provide hooks to generate anything other than sdist or wheel, so basically all commands not actually triggered (directly or indirectly) by calling aPEP 517 front-end are suspect."Attached PR deprecates bdist_wininst.See also the related issuebpo-37468 "Don't install wininst*.exe on non-Windows platforms". bdist_wininst only works on Windows: seebpo-10945 and commit72cd653c4ed7a4f8f8fb06ac364b08a97085a2b5.

For the record, I am 100% in favor of deprecating and removing bdist_wininst and bdist_msi from distutils as soon as possible, as they are maintenance burdens and bdist_wininst in particular often attracts AV false positives.setuptools is welcome to either do the same or restore the functionality, I don't have any preference if someone else is maintaining it (but I'd suggest removal there too until someone wants to maintain it).Some of our distributions of Python already exclude bdist_wininst, so it can't be blindly relied on. And I don't know that it was ever upgraded forPEP 514. So far I have heard zero complaints about this, though as Paul Ganssle pointed out on the PR they're not likely to be using the "newer" packages.So consider me +1 for deprecate in 3.8 (we can still do that, right? it's just docs and a warning on use) and remove in 3.9 or 3.10 as appropriate.

> So consider me +1 for deprecate in 3.8 (we can still do that, right? it's just docs and a warning on use) and remove in 3.9 or 3.10 as appropriate.I modified my PR to deprecate the feature in Python 3.8. I'm not sure about scheduling the removal yet, since the Python 3.9 release schedule is under discussion:https://discuss.python.org/t/pep-596-python-3-9-release-schedule-doubling-the-release-cadence/1828I would prefer to give at least 2 years to projects to update their setup.py (how they are distributed). Even if bdist_wininst has issues, it's not too painful to maintain a few more years. The removal can be decided later.

New changeset1da4462765b084dfa8d869b6cb5855e8f6014a11 by Victor Stinner in branch 'master':bpo-37481: Deprecate distutils bdist_wininst command (GH-14553)https://github.com/python/cpython/commit/1da4462765b084dfa8d869b6cb5855e8f6014a11

New changesetb4cd6ba1a028c2624ac7bc93439b9d45f51cfeba by Miss Islington (bot) in branch '3.8':bpo-37481: Deprecate distutils bdist_wininst command (GH-14553)https://github.com/python/cpython/commit/b4cd6ba1a028c2624ac7bc93439b9d45f51cfeba

The initial issue has been fixed. Let's continue the discussion in the Packaging forum:https://discuss.python.org/t/deprecate-bdist-wininst/1929