Rocq needs help finding ML files installed inside `$HOMEBREW_PREFIX/opt/rocq-elpi/libexec/lib`.
This can be done by passing `-I $HOMEBREW_PREFIX/opt/rocq-elpi/libexec/lib` as an argument.
Alternatively, you can add the directory to OCAMLPATH, e.g.
export OCAMLPATH="$HOMEBREW_PREFIX/opt/rocq-elpi/libexec/lib:$OCAMLPATH"
or use the included findlib configuration file, e.g.
export OCAMLFIND_CONF="$HOMEBREW_PREFIX/opt/rocq-elpi/libexec/lib/findlib.conf"