ocaml-base 4.13.1-4ubuntu1 (amd64 binary) in ubuntu lunar

 Objective Caml (OCaml) is an implementation of the ML language, based on
 the Caml Light dialect extended with a complete class-based object system
 and a powerful module system in the style of Standard ML.
 .
 This package contains only the runtime system needed to run bytecode
 executables. The 'ocaml' package contains the full development suite of
 Objective Caml.