http://gitshn5x75sgs53q3pxwjva2z65ns5vadx3h7u3hrdssbxsova66cxid.onion/P2Pool/edwards25519
It was then further developed by Henry de Valence for use in ristretto255, and was finally merged back into the Go standard library as of Go 1.17. It now tracks the upstream codebase and extends it with additional functionality. Most users don't need this package, and should instead use crypto/ed25519 for signatures, golang.org/x/crypto/curve25519 for Diffie-Hellman, or github.com/gtank/ristretto255 for prime order group logic.