Add ocaml-csexp-devel R to the -devel subpackage.

ocaml-dune.spec

@@ -6,7 +6,7 @@
 
 Name:           ocaml-%{libname}
 Version:        2.7.1
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A composable build system for OCaml
 
 # Dune itself is MIT.  Some bundled libraries have a different license:
@@ -67,6 +67,7 @@ productive.
 %package        devel
 Summary:        Development files for %{name}
 Requires:       %{name}%{?isa} = %{version}-%{release}
+Requires:       ocaml-csexp-devel%{?_isa}
 
 %description    devel
 The %{name}-devel package contains libraries and
@@ -195,6 +196,9 @@ cp -ar README.md CHANGES.md MIGRATION.md doc/_build/* %{buildroot}%{_pkgdocdir}/
 %{_emacs_sitelispdir}/dune*
 
 %changelog
+* Fri Sep 18 2020 Jerry James <loganjerry@gmail.com> - 2.7.1-2
+- Add ocaml-csexp-devel R to the -devel subpackage
+
 * Mon Sep 14 2020 Jerry James <loganjerry@gmail.com> - 2.7.1-1
 - Version 2.7.1
 - Csexp is no longer vendored in