1 files changed, 25 insertions, 25 deletions
diff --git a/nixpkgs/pkgs/development/ocaml-modules/ocsigen-deriving/default.nix b/nixpkgs/pkgs/development/ocaml-modules/ocsigen-deriving/default.nix
index 1feb3ecae714..d2e20838ecaf 100644
--- a/nixpkgs/pkgs/development/ocaml-modules/ocsigen-deriving/default.nix
+++ b/nixpkgs/pkgs/development/ocaml-modules/ocsigen-deriving/default.nix
@@ -1,41 +1,41 @@
-{ stdenv, lib, fetchzip, ocaml, findlib, ocamlbuild, oasis, ocaml_optcomp, camlp4
+{ stdenv
+, lib
+, fetchFromGitHub
+, ocaml
+, findlib
+, ocamlbuild
+, oasis
+, camlp4
 , num
 }:
 
-let param =
-  if lib.versionAtLeast ocaml.version "4.03"
-  then {
-    version = "0.8.1";
-    sha256 = "03vzrybdpjydbpil97zmir71kpsn2yxkjnzysma7fvybk8ll4zh9";
-    buildInputs = [ num ];
-  } else {
-    version = "0.7.1";
-    sha256 = "0gg3nr3iic4rwqrcc0qvfm9x0x57zclvdsnpy0z8rv2fl5isbzms";
-  };
-in
+if !lib.versionAtLeast ocaml.version "4.03"
+then throw "ocsigen-deriving is not available of OCaml ${ocaml.version}"
+else
 
-let inherit (param) version; in
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-ocsigen-deriving";
+  version = "0.8.2";
 
-stdenv.mkDerivation {
-  pname = "ocsigen-deriving";
-  inherit version;
-  src = fetchzip {
-    url = "https://github.com/ocsigen/deriving/archive/${version}.tar.gz";
-    inherit (param) sha256;
+  src = fetchFromGitHub {
+    owner = "ocsigen";
+    repo = "deriving";
+    rev = version;
+    sha256 = "sha256:09rp9mrr551na0nmclpxddlrkb6l2d7763xv14xfx467kff3z0wf";
   };
 
-  buildInputs = [ ocaml findlib ocamlbuild oasis ocaml_optcomp camlp4 ]
-  ++ (param.buildInputs or []);
-
   createFindlibDestdir = true;
 
-  meta =  {
+  buildInputs = [ ocaml findlib ocamlbuild oasis camlp4 num ];
+
+  meta = {
     homepage = "https://github.com/ocsigen/deriving";
     description = "Extension to OCaml for deriving functions from type declarations";
     license = lib.licenses.mit;
-    platforms = ocaml.meta.platforms or [];
+    inherit (ocaml.meta) platforms;
     maintainers = with lib.maintainers; [
-      gal_bolle vbgl
+      gal_bolle
+      vbgl
     ];
   };