Problems with parallel builds

[MrBitBucket]

In a github action with several jobs I need to generate a config.h file in building.
It seems the jobs can run in parallel so I need to make the meson output folder vary with the job.
The wheels all end up with long names eg

extension-cp37-abi3-musllinux_1_2_armv7l.whl

so is there an easy way to extract from the wheel name or does cibuildwheel have that as an env var?

[MrBitBucket]

I customized the build folder name using code like this, but my problem persists with github windows builds

def bfName(**kwargs):
    from setuptools.dist import Distribution
    # create a fake distribution from arguments
    dist = Distribution(attrs=kwargs)
    # finalize bdist_wheel command
    bdist_wheel_cmd = dist.get_command_obj('bdist_wheel')
    bdist_wheel_cmd.ensure_finalized()
    # wheel file name
    #distname = bdist_wheel_cmd.wheel_dist_name
    tag = '-'.join(bdist_wheel_cmd.get_tag())
    return f'build-{tag}'

if cibuildwheel:
    bfDir = bfName(ext_modules=[Extension("",[])], options=options)