error missing-impl

error Standard: [§10.1]

What it means#

Every service that is not extern needs exactly one impl in the program: the contract alone serves nothing.

oxl✓ checked in CI

service Lonely { // <- missing-impl
  rpc ping() -> i32
}

error

missing-impl

Write impl Lonely { rpc ping() { 1 } }, or declare the service extern service if it is implemented elsewhere (it then only has clients).