checkInputs used to be added to nativeBuildInputs. Now we have
nativeCheckInputs to do that instead. Doing this treewide change allows
to keep hashes identical to before the introduction of
nativeCheckInputs.
Some packages seem to still require toml despite setuptools-scm having switched to tomli.
If it is missing the version number in dist.into is set to 0.0.0 and silently all version pins break.
