camlzip: 1.05 -> 1.06 (#16443)

pkgs/development/ocaml-modules/camlzip/default.nix

@@ -2,26 +2,39 @@
 
 let
   ocaml_version = (builtins.parseDrvName ocaml.name).version;
-  version = "1.05";
+  param =
+    if stdenv.lib.versionAtLeast ocaml_version "4.02"
+    then {
+      version = "1.06";
+      url = "1616";
+      sha256 = "0m6gyjw46w3qnhxfsyqyag42znl5lwargks7w7rfchr9jzwpff68";
+      patch = ./makefile_1_06.patch;
+      installTargets = "install-findlib";
+    } else {
+      version = "1.05";
+      url = "1037";
+      sha256 = "930b70c736ab5a7ed1b05220102310a0a2241564786657abe418e834a538d06b";
+      patch = ./makefile_1_05.patch;
+      installTargets = "install";
+    };
 in
 
 stdenv.mkDerivation {
-  name = "camlzip-${version}";
+  name = "camlzip-${param.version}";
 
   src = fetchurl {
-    url = "http://forge.ocamlcore.org/frs/download.php/1037/" +
-          "camlzip-${version}.tar.gz";
-    sha256 = "930b70c736ab5a7ed1b05220102310a0a2241564786657abe418e834a538d06b";
+    url = "http://forge.ocamlcore.org/frs/download.php/${param.url}/camlzip-${param.version}.tar.gz";
+    inherit (param) sha256;
   };
 
   buildInputs = [zlib ocaml findlib];
 
-  patches = [ ./makefile.patch ];
+  patches = [ param.patch ];
 
   createFindlibDestdir = true;
 
   postPatch = ''
-    substitute ${./META} META --subst-var-by VERSION "${version}"
+    substitute ${./META} META --subst-var-by VERSION "${param.version}"
     substituteInPlace Makefile \
       --subst-var-by ZLIB_LIBDIR "${zlib.out}/lib" \
       --subst-var-by ZLIB_INCLUDE "${zlib.dev}/include"
@@ -29,7 +42,11 @@ stdenv.mkDerivation {
 
   buildFlags = "all allopt";
 
-  installTargets = "install";
+  inherit (param) installTargets;
+
+  postInstall = ''
+    ln -s $out/lib/ocaml/${ocaml_version}/site-lib/{,caml}zip
+  '';
 
   meta = {
     homepage = "http://cristal.inria.fr/~xleroy/software.html#camlzip";