"IOError: File name too long " when call ROP

[kato-megumi]

Error log:

Traceback (most recent call last):
File "vortex12.py", line 46, in
rop = ROP(libs)
File "/usr/local/lib/python2.7/dist-packages/pwnlib/rop/rop.py", line 466, in init
self.__load()
File "/usr/local/lib/python2.7/dist-packages/pwnlib/rop/rop.py", line 1090, in __load
self.__cache_save(elf, elf_gadgets)
File "/usr/local/lib/python2.7/dist-packages/pwnlib/rop/rop.py", line 1009, in __cache_save
file(self.__get_cachefile_name(elf), 'w+').write(repr(data))
IOError: [Errno 36] File name too long: '/tmp/pwntools-rop-cache/2af3321088068fd0fabfbc8c938b47aa2a22e3876b39aa0f9c894f02f1c5edf6_e79282760fb8d4fd9c7310515c6d9617c28f95fc9562a9058cb69cd861c534be_331321edfc0b8c9b643600ce1b5bf7348b2a635cd04b1ec631cf65b8128afe12_066e2be587ae87d77cf03fd5a2155f1a203c8e3d2d405ca89f006c81c7145e58'

This probably what cause problem:

def __get_cachefile_name(self, files):
        """Given an ELF or list of ELF objects, return a cache file for the set of files"""
        cachedir = os.path.join(tempfile.gettempdir(), 'pwntools-rop-cache')
        if not os.path.exists(cachedir):
            os.mkdir(cachedir)

        if isinstance(files, ELF):
            files = [files]

        hashes = []

        for elf in self.elfs:
            sha256 = hashlib.sha256(elf.get_data()).hexdigest()
            hashes.append(sha256)

        return os.path.join(cachedir, '_'.join(hashes))

Linux max filename length only 255 so instead of join hash files name, dont better should hash the join file name ?