From e09836723d338b97c6d3ca33e74edd1653630e33 Mon Sep 17 00:00:00 2001
From: Jonathan Ringer <jonringer117@gmail.com>
Date: Thu, 2 Jul 2020 10:38:40 -0700
Subject: [PATCH] hepmc3: 3.2.0 -> 3.2.2

---
 .../libraries/physics/hepmc3/default.nix           | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/physics/hepmc3/default.nix b/pkgs/development/libraries/physics/hepmc3/default.nix
index a07c3c19a1bb..10b789f514f9 100644
--- a/pkgs/development/libraries/physics/hepmc3/default.nix
+++ b/pkgs/development/libraries/physics/hepmc3/default.nix
@@ -3,19 +3,21 @@
 let
   pythonVersion = with stdenv.lib.versions; "${major python.version}${minor python.version}";
   withPython = python != null;
+  # ensure that root is built with the same python interpreter, as it links against numpy
+  root_py = if withPython then root.override { inherit python; } else root;
 in
 
 stdenv.mkDerivation rec {
   pname = "hepmc3";
-  version = "3.2.0";
+  version = "3.2.2";
 
   src = fetchurl {
     url = "http://hepmc.web.cern.ch/hepmc/releases/HepMC3-${version}.tar.gz";
-    sha256 = "1z491x3blqs0a2jxmhzhmh4kqdw3ddcbvw69gidg4w6icdvkhcpi";
+    sha256 = "0h9dbsbbf3y7iia27ms9cy4pfk2yyrkdnxcqsbvkhkl0izvv930f";
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ root ]
+  buildInputs = [ root_py ]
     ++ stdenv.lib.optional withPython python;
 
   cmakeFlags = [
@@ -31,6 +33,12 @@ stdenv.mkDerivation rec {
       --replace 'readlink' '${coreutils}/bin/readlink'
   '';
 
+  doInstallCheck = withPython;
+  # prevent nix from trying to dereference a null python
+  installCheckPhase = stdenv.lib.optionalString withPython ''
+    PYTHONPATH=${placeholder "out"}/${python.sitePackages} python -c 'import pyHepMC3'
+  '';
+
   meta = with stdenv.lib; {
     description = "The HepMC package is an object oriented, C++ event record for High Energy Physics Monte Carlo generators and simulation";
     license = licenses.gpl3;