#33778: pyproject.toml uses the incorrect "legacy" setuptools backend and
unnecessary wheel dep
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Reporter: Michał Górny | Owner: nobody
Type: Bug | Status: new
Component: Packaging | Version: 4.0
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 1 | UI/UX: 0
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Comment (by Rui):
Replying to [ticket:33778 Michał Górny]:
hello，I'm new to package program, what means to used incorrect legacy
backend?how to fix it? Besides,just need to remove duplicated 'wheel'
requires?
> The pyproject.toml file lists the following:
>
> {{{
> [build-system]
> requires = ['setuptools>=40.8.0', 'wheel']
> build-backend = 'setuptools.build_meta:__legacy__'
> }}}
>
> The wheel dependency is redundant and discouraged here. Setuptools adds
this dependency via the backend automatically since day one. It was
historically included in the documentation but it was a mistake. See:
https://github.com/pypa/setuptools/commit/f7d30a9529378cf69054b5176249e5457aaf640a
>
> The legacy backend was never supposed to be used in pyproject.toml. It
is only an "internal" fallback that is used by tools like pip when
pyproject.toml is not present at all. The regular backend must always be
used in pyproject.toml. See:
https://github.com/pypa/setuptools/issues/1689
--
Ticket URL: <https://code.djangoproject.com/ticket/33778#comment:7>
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