From 37eead0c1e62c5c8cbe0e72d9ae0131640819cea Mon Sep 17 00:00:00 2001
From: Sylvester Joosten <sylvester.joosten@gmail.com>
Date: Wed, 16 Jun 2021 17:33:23 +0000
Subject: [PATCH] Explicitly enable MT for geant4.

---
 spack.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spack.yaml b/spack.yaml
index cd808520c..e197f4ce5 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -23,7 +23,7 @@ spack:
     - stow@2.3.1
     - cairo@1.16.0 +fc+ft+X+pdf+gobject
     - podio@0.13
-    - geant4@10.7.1 cxxstd=17 +opengl +vecgeom +x11 +qt ^qt +opengl
+    - geant4@10.7.1 cxxstd=17 +opengl +vecgeom +x11 +qt +threads ^qt +opengl
     - dd4hep@1.16.1 +geant4 +assimp +hepmc3 +ipo
     - acts@8.02.0p1 +dd4hep +digitization +identification +json +tgeo +ipo
     - genfit@2.00.00
-- 
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