From 86f058c8427da6a563b799aecf6c4cccdd395278 Mon Sep 17 00:00:00 2001
From: Timo Kaufmann <timokau@zoho.com>
Date: Tue, 10 Jul 2018 14:54:28 +0200
Subject: [PATCH] python2Packages.ipython: apply upstream signature patch

---
 pkgs/development/python-modules/ipython/5.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pkgs/development/python-modules/ipython/5.nix b/pkgs/development/python-modules/ipython/5.nix
index f2066fee2a4..36f581c98af 100644
--- a/pkgs/development/python-modules/ipython/5.nix
+++ b/pkgs/development/python-modules/ipython/5.nix
@@ -2,6 +2,7 @@
 , stdenv
 , buildPythonPackage
 , fetchPypi
+, fetchpatch
 # Build dependencies
 , glibcLocales
 # Test dependencies
@@ -36,6 +37,16 @@ buildPythonPackage rec {
     substituteInPlace setup.py --replace "'gnureadline'" " "
   '';
 
+  patches = [
+    # improve cython support, needed by sage, accepted upstream
+    # https://github.com/ipython/ipython/pull/11139
+    (fetchpatch {
+      name = "signature-use-inspect.patch";
+      url = "https://github.com/ipython/ipython/commit/8d399b98d3ed5c765835594100c4d36fb2f739dc.patch";
+      sha256 = "1r7v9clwwbskmj4y160vcj6g0vzqbvnj4y1bm2n4bskafapm42g0";
+    })
+  ];
+
   buildInputs = [ glibcLocales ];
 
   checkInputs = [ nose pygments testpath ] ++ lib.optional isPy27 mock;