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-rw-r--r--pkgs/development/ocaml-modules/type_conv/112.01.01.nix6
1 files changed, 5 insertions, 1 deletions
diff --git a/pkgs/development/ocaml-modules/type_conv/112.01.01.nix b/pkgs/development/ocaml-modules/type_conv/112.01.01.nix
index e90ca2d16a6..468b872ec3d 100644
--- a/pkgs/development/ocaml-modules/type_conv/112.01.01.nix
+++ b/pkgs/development/ocaml-modules/type_conv/112.01.01.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, buildOcaml}:
+{ lib, fetchFromGitHub, buildOcaml, camlp4}:
 
 buildOcaml rec {
   minimumSupportedOcamlVersion = "4.02";
@@ -13,6 +13,10 @@ buildOcaml rec {
     sha256 = "sha256-HzH0hnceCQ2kDRATjl+tfKk3XSBDsGnPzVUGYpDQUmU=";
   };
 
+  strictDeps = true;
+
+  buildInputs = [ camlp4 ];
+
   meta = {
     homepage = "https://github.com/janestreet/type_conv/";
     description = "Support library for preprocessor type conversions";