ocaml-source - 4.14.1-1 main

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 the sources needed to build some packages which build
depend on the OCaml source. Notice that if you want to rebuild OCaml, these
will not work, consider using the source package instead.