build_ext-patma.py

# based on https://github.com/python/cpython/blob/9538bc9185e934bee2bd5ae2cda2b2e92a61906d/Lib/distutils/command/build_ext.py#L357-L385
match ext:
    case Extension():
        continue
    case tuple((str(ext_name), {"sources": build_src})) if extension_name_re.match(ext_name):
        log.warn("old-style (ext_name, build_info) tuple found in "
                     "ext_modules for extension '%s' "
                     "-- please convert to Extension instance", ext_name)
        ext = Extension(ext_name, build_src)
    case _:
        raise DistutilsSetupError(
                       "each element of 'ext_modules' option must be an "
                       "Extension instance or (string, dict) tuple")