From 8bef91d84a51d7cc7c2774dd4b2fea840f95a91f Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Fri, 17 Aug 2018 01:35:17 +0200
Subject: [PATCH] protobuf: fix missing google.protobuf.compiler

---
 pkgs/development/python-modules/protobuf/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/protobuf/default.nix b/pkgs/development/python-modules/protobuf/default.nix
index 1a345b19ef94..9059080c9196 100644
--- a/pkgs/development/python-modules/protobuf/default.nix
+++ b/pkgs/development/python-modules/protobuf/default.nix
@@ -28,7 +28,10 @@ buildPythonPackage rec {
     export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION=2
   '';
 
-  preBuild = optionalString (versionAtLeast protobuf.version "2.6.0") ''
+  preBuild = ''
+    # Workaround for https://github.com/google/protobuf/issues/2895
+    ${python}/bin/${python.executable} setup.py build
+  '' + optionalString (versionAtLeast protobuf.version "2.6.0") ''
     ${python}/bin/${python.executable} setup.py build_ext --cpp_implementation
   '';