Install libpa-structural-sexp-camlp4-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libpa-structural-sexp-camlp4-dev
Description:
OCaml Syntax extension for simple building of s-expressions
This library defines a syntax extensions that simplifies building s-expressions from OCaml values.
Homepage: http://janestreet.github.io/
Version: 113.00.00-2ubuntu1
Section: universe/ocaml