libcoq-ocaml-dev 8.9.1-5ubuntu1 (arm64 binary) in ubuntu focal

 Coq is a proof assistant for higher-order logic, which allows the
 development of computer programs consistent with their formal
 specification. It is developed using Objective Caml and Camlp5.
 .
 This package provides and libraries needed to develop OCaml-side
 extensions to Coq.