libghc-ed25519-dev 0.0.5.0-1 (amd64 binary) in ubuntu xenial

 This package provides a simple, portable implementation of the
 ed25519 public-key signature system. It also includes support for
 detached signatures.
 .
 The underlying implementation uses the ref10 implementation of
 ed25519 from SUPERCOP, and should be relatively fast.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.