From 8dd63a67e9f5b6711614bd226c24b3cdaa0a04dc Mon Sep 17 00:00:00 2001
From: Timo Kaufmann <timokau@zoho.com>
Date: Thu, 10 Jan 2019 00:10:34 +0100
Subject: [PATCH] python3.pkgs.graph-tool: fix with python3.7 (#53719)

"async" is now reserved, there is an upstream fix but no release yet.
---
 pkgs/development/python-modules/graph-tool/2.x.x.nix | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/graph-tool/2.x.x.nix b/pkgs/development/python-modules/graph-tool/2.x.x.nix
index d58ec269054..4b0e665de09 100644
--- a/pkgs/development/python-modules/graph-tool/2.x.x.nix
+++ b/pkgs/development/python-modules/graph-tool/2.x.x.nix
@@ -3,6 +3,8 @@
 , gobject-introspection, pygobject3, gtk3, matplotlib, ncurses
 , buildPythonPackage
 , fetchpatch
+, pythonAtLeast
+, lib
 }:
 
 buildPythonPackage rec {
@@ -29,7 +31,14 @@ buildPythonPackage rec {
       url = "https://git.skewed.de/count0/graph-tool/commit/aa39e4a6b42d43fac30c841d176c75aff92cc01a.patch";
       sha256 = "1578inb4jqwq2fhhwscn5z95nzmaxvmvk30nzs5wirr26iznap4m";
     })
-  ];
+  ] ++ (lib.optionals (pythonAtLeast "3.7") [
+    # # python 3.7 compatibility (`async` is now reserved)
+    (fetchpatch {
+      name = "async-reserved.patch";
+      url = "https://git.skewed.de/count0/graph-tool/commit/0407f41a35b6be7c670927fb5dc578cbd0e88be4.patch";
+      sha256 = "1fklznhmfvbb3ykwzyf8p2hiczby6y7r0xnkkjl2jkxlvr24000q";
+    })
+  ]);
 
   configureFlags = [
     "--with-python-module-path=$(out)/${python.sitePackages}"