reproduce:
        git remote add dtor-input https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git
        git fetch dtor-input for-linus
        git checkout dtor-input/for-linus
        b4 shazam https://lore.kernel.org/r/20241105130322.213623-4-markus.burri@mt.com
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # install Sphinx 2.4.4
        make htmldocs