From e1fb67832b438eff93e826c08bf0c88aa816b2ce Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Tue, 6 Jul 2021 09:07:23 +0200
Subject: [PATCH] python3Packages.nmigen: fix build

---
 .../python-modules/nmigen/default.nix         | 27 ++++++++++++++-----
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/pkgs/development/python-modules/nmigen/default.nix b/pkgs/development/python-modules/nmigen/default.nix
index d42e27a29329..8bd198713a3f 100644
--- a/pkgs/development/python-modules/nmigen/default.nix
+++ b/pkgs/development/python-modules/nmigen/default.nix
@@ -12,9 +12,9 @@
 
 # for tests
 , pytestCheckHook
-, yosys
 , symbiyosys
 , yices
+, yosys
 }:
 
 buildPythonPackage rec {
@@ -31,22 +31,35 @@ buildPythonPackage rec {
     sha256 = "0cjs9wgmxa76xqmjhsw4fsb2mhgvd85jgs2mrjxqp6fwp8rlgnl1";
   };
 
-  nativeBuildInputs = [ setuptools-scm git ];
+  SETUPTOOLS_SCM_PRETEND_VERSION="${realVersion}";
+
+  nativeBuildInputs = [
+    git
+    setuptools-scm
+  ];
 
   propagatedBuildInputs = [
-    setuptools
-    pyvcd
     jinja2
+    pyvcd
+    setuptools
   ] ++
     lib.optional (pythonOlder "3.9") importlib-resources ++
     lib.optional (pythonOlder "3.8") importlib-metadata;
 
-  checkInputs = [ pytestCheckHook yosys symbiyosys yices ];
+  checkInputs = [
+    pytestCheckHook
+    symbiyosys
+    yices
+    yosys
+  ];
 
-  preBuild = ''
-    export SETUPTOOLS_SCM_PRETEND_VERSION="${realVersion}"
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "Jinja2~=2.11" "Jinja2>=2.11"
   '';
 
+  pythonImportsCheck = [ "nmigen" ];
+
   meta = with lib; {
     description = "A refreshed Python toolbox for building complex digital hardware";
     homepage = "https://nmigen.info/nmigen";