Is it required, or widely practiced to encode a EdDSA signature as a ASN.1 Sequence? Why or why not? How should you encode a EdDSA signature? I cannot find mention of DER or ASN in the EdDSA RFC.
However, there is mention in the ECDSA RFC (as expected)
An ECDSA signature is a pair of integers. In many protocols that require a signature to be a sequence of bits (or octets), it is customary to encode the signature as an ASN.1 SEQUENCE of two INTEGER values, with DER rules.