From 574f3c3bfef49c682490e065b8f93e93ed49038b Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Wed, 12 Jul 2017 20:24:54 +0200
Subject: [PATCH] ocamlPackages.csv: 1.5 -> 1.7

---
 .../development/ocaml-modules/csv/default.nix | 28 +++++++++++++++----
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/ocaml-modules/csv/default.nix b/pkgs/development/ocaml-modules/csv/default.nix
index 4bb8f8ace9c0..751d40ff706d 100644
--- a/pkgs/development/ocaml-modules/csv/default.nix
+++ b/pkgs/development/ocaml-modules/csv/default.nix
@@ -1,19 +1,35 @@
-{ stdenv, fetchzip, ocaml, findlib, ocamlbuild }:
+{ stdenv, fetchzip, ocaml, findlib, ocamlbuild, ocaml_lwt }:
+
+let param =
+  if stdenv.lib.versionAtLeast ocaml.version "4.2"
+  then {
+    version = "1.7";
+    url = https://math.umons.ac.be/anum/software/csv/csv-1.7.tar.gz;
+    sha256 = "1mmcjiiz0jppgipavpph5kn04xcpalw4scbjrw2z3drghvr3qqwf";
+    lwtSupport = true;
+  } else {
+    version = "1.5";
+    url = https://github.com/Chris00/ocaml-csv/releases/download/1.5/csv-1.5.tar.gz;
+    sha256 = "1ca7jgg58j24pccs5fshis726s06fdcjshnwza5kwxpjgdbvc63g";
+    lwtSupport = false;
+  };
+in
 
 stdenv.mkDerivation {
 
-  name = "ocaml-csv-1.5";
+  name = "ocaml${ocaml.version}-csv-${param.version}";
 
   src = fetchzip {
-    url = https://github.com/Chris00/ocaml-csv/releases/download/1.5/csv-1.5.tar.gz;
-    sha256 = "1ca7jgg58j24pccs5fshis726s06fdcjshnwza5kwxpjgdbvc63g";
+    inherit (param) url sha256;
   };
 
-  buildInputs = [ ocaml findlib ocamlbuild ];
+  buildInputs = [ ocaml findlib ocamlbuild ]
+  ++ stdenv.lib.optional param.lwtSupport ocaml_lwt;
 
   createFindlibDestdir = true;
 
-  configurePhase = "ocaml setup.ml -configure --prefix $out --enable-tests";
+  configurePhase = "ocaml setup.ml -configure --prefix $out --enable-tests"
+  + stdenv.lib.optionalString param.lwtSupport " --enable-lwt";
 
   buildPhase = "ocaml setup.ml -build";