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-rw-r--r--pkgs/development/ocaml-modules/zarith/default.nix13
1 files changed, 9 insertions, 4 deletions
diff --git a/pkgs/development/ocaml-modules/zarith/default.nix b/pkgs/development/ocaml-modules/zarith/default.nix
index 9122a3509d96..1d331090a44f 100644
--- a/pkgs/development/ocaml-modules/zarith/default.nix
+++ b/pkgs/development/ocaml-modules/zarith/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl
+{ stdenv, buildOcaml, fetchurl
 , ocaml, findlib, pkgconfig, perl
 , gmp
 }:
@@ -16,20 +16,25 @@ let source =
   };
 in
 
-stdenv.mkDerivation rec {
-  name = "ocaml${ocaml.version}-zarith-${version}";
+buildOcaml rec {
+  name = "zarith";
   inherit (source) version;
   src = fetchurl { inherit (source) url sha256; };
 
+  minimumSupportedOcamlVersion = "3.12.1";
+
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ ocaml findlib perl ];
   propagatedBuildInputs = [ gmp ];
 
+  # needed so setup-hook.sh sets CAML_LD_LIBRARY_PATH for dllzarith.so
+  hasSharedObjects = true;
+
   patchPhase = "patchShebangs ./z_pp.pl";
   configurePhase = ''
     ./configure -installdir $out/lib/ocaml/${ocaml.version}/site-lib
   '';
-  createFindlibDestdir = true;
+  preInstall = "mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib";
 
   meta = with stdenv.lib; {
     description = "Fast, arbitrary precision OCaml integers";