---
 gnu/packages/ocaml.scm | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index bf12cc85c..8abbbab71 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -5082,7 +5082,18 @@ provided by companion libraries such as
          "03jds7bszh8wwpfwxb3dg0gyr1j1872wxwx1xqhry5ir0i84bg0s"))))
     (build-system dune-build-system)
     (arguments
-     '(#:tests? #f)) ;no tests
+     '(#:tests? #f ;no tests
+       #:phases
+       (modify-phases %standard-phases
+         (replace 'install
+           ;; set libdir to use ocaml-site
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out")))
+               (invoke "dune" "install"
+                       (string-append "--prefix=" out)
+                       (string-append "--libdir=" out
+                                      "/lib/ocaml/site-lib")))
+             #t)))))
     (synopsis "Compiler libraries repackaged")
     (description "This packaeg simply repackages the OCaml compiler libraries
 so they don't expose everything at toplevel.  For instance, @code{Ast_helper}
-- 
2.20.1