still an issue..

fix highlevelcrypto.py

---prinv = hashlib.sha512(passphrase + nonce).digest()[:32]
+++priv = hashlib.sha512(str(passphrase).encode('utf-8') + str(nonce).encode('utf-8')).digest()[:32]

ERROR: "cannot ..." ...string + byte is not valid... 
...because this error disables the feature to generate an address.. it is important.. and this bug is still there on alpine linux and others.