You can execute hprotoc by doing stack exec hprotoc. Remember stack exec makes sure the environment is setup before running any command.
This means Crypto.LibP2P.Protobuf, Crypto.LibP2P.Protobuf.KeyType, Crypto.LibP2P.Protobuf.PrivateKey, Crypto.LibP2P.Protobuf.PublicKey is autogenerated. This is equivalent to the pb directory of the go implementation.
-> Crypto functions need to be checked to ensure they match the go-libp2p-crypto implementation -> Some of the typing of functions could be improved -> QuickCheck Tests