Reports

I was close - reread the setuptools/build_meta.py source. Discovered that all of the individual words in the argv list used by the backend invoked by build need to have the --config-setting=--build-option={the-argv-word}.

So my example command line in the OP should have been this:

python3  -m build  --wheel  '--config-setting=--build-option=-v' \
  '--config-setting=--build-option=egg_info' \
  '--config-setting=--build-option=--tag-build'  \
  '--config-setting=--build-option=post20240119000000'

As oyvind answered, to supply the global options to the backend, use --config-setting. eg.

--config-setting=--global-option=--no-user-cfg

My PEP 517 builds are now using the above pattern. IHTH someone else.

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