Deprecate `--no-binary` implying `setup.py install`

[sbidoul]

When --no-binary is enabled pip install does not build a wheel and calls setup.py install instead. This happens only for legacy project that don't have a pyproject.toml.

This is currently reported as an info-level statement: Skipping wheel build for %s, due to binaries being disabled for it.

Since setuptools' install command is deprecated, we deprecate this behavior and recommend the --use-pep517 option (which will become our default at some point).

Towards #8102

[lancethepants]

What would be the new equivalent of
pip install --upgrade --force-reinstall --no-binary :all: sabyenc3
This one particular packaged doesn't work when I install it normally from pip, so I want to ignore that it's installed, download, compile, and install from source instead. This command achieves this but I can't figure what the new method would be.

[pfmoore]

As noted, add the --use-pep517 flag. If that doesn’t work correctly, it will be something the sabyenc3 project needs to investigate, as it is likely doing something that does not work correctly under build isolation.