ModuleNotFoundError: No module named 'wheel'

[Maksim Kurbatov]

After

 pip install wheel build
 python -m build --wheel --sdist

I get an error

...
ModuleNotFoundError: No module named 'wheel'

ERROR Backend subprocess exited when trying to invoke get_requires_for_build_sdist

but if I downgrade build version to 1.0.3 the error goes away

[layday]

You're building with isolation so the wheel package from the outer environment would not be importable. Can you share more information about the project you are trying to build?

It looks as though you might've had an implicit dependency on wheel when building your sdist. #716 removed wheel from the build-system table fallback. If you'd like to continue depending on wheel for your sdists, you are gonna need to provide a build-system. In your pyproject.toml:

[build-system]
build-backend = "setuptools.build_meta"
requires = ["setuptools", "wheel"]

[Henry Schreiner]

[build-system]
build-backend = "setuptools.build_meta"
requires = ["setuptools"]

Is fine. setuptools.build_meta will request wheel if it needs it.

I’m guessing we no longer build pure setup.py packages, then?

[Henry Schreiner]

Ahh, you needed wheel for get_requires_for_build_sdist, okay, that’s why you need wheel. I’d recommend not importing wheel in setup.py, it does not consider its interface public. But okay, that’s to be expected then.