  * provide feature libsodium-resolver
    when needed crate is in Debian
    * sodiumoxide
  * provide feature libsodium-accelerated
    when needed crates are in Debian
    * sodiumoxide
  * provide feature pqclean_kyber1024
    when needed crates are in Debian
    * pqcrypto-kyber
    * pqcrypto-traits
  * provide feature vector-tests
    when its test succeeds
