From 4086a9cf45ef6d098b31262e814aeb58e630e098 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Thu, 5 Oct 2017 21:32:47 +0000
Subject: [PATCH] ocamlPackages.pprint: 20140424 -> 20171003

---
 .../development/ocaml-modules/pprint/default.nix | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/ocaml-modules/pprint/default.nix b/pkgs/development/ocaml-modules/pprint/default.nix
index 83732eb1f75f..899806c4dae2 100644
--- a/pkgs/development/ocaml-modules/pprint/default.nix
+++ b/pkgs/development/ocaml-modules/pprint/default.nix
@@ -2,13 +2,23 @@
 
 assert stdenv.lib.versionAtLeast (stdenv.lib.getVersion ocaml) "3.12";
 
+let param =
+  if stdenv.lib.versionAtLeast ocaml.version "4.02"
+  then {
+    version = "20171003";
+    sha256 = "06zwsskri8kaqjdszj9360nf36zvwh886xwf033aija8c9k4w6cx";
+  } else {
+    version = "20140424";
+    sha256 = "0sc9q89dnyarcg24czyhr6ams0ylqvia3745s6rfwd2nldpygsdk";
+}; in
+
 stdenv.mkDerivation {
 
-  name = "ocaml-pprint-20140424";
+  name = "ocaml${ocaml.version}-pprint-${param.version}";
 
   src = fetchurl {
-    url = http://gallium.inria.fr/~fpottier/pprint/pprint-20140424.tar.gz;
-    sha256 = "0sc9q89dnyarcg24czyhr6ams0ylqvia3745s6rfwd2nldpygsdk";
+    url = "http://gallium.inria.fr/~fpottier/pprint/pprint-${param.version}.tar.gz";
+    inherit (param) sha256;
   };
 
   buildInputs = [ ocaml findlib ocamlbuild ];