From 764e40bdef2c66954e0490dc18c39a1ef2dea31c Mon Sep 17 00:00:00 2001
From: Athanasios Karmas <karmas@athenarc.gr>
Date: Mon, 19 Jul 2021 13:48:35 +0000
Subject: [PATCH] Update spack.yaml

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

diff --git a/spack.yaml b/spack.yaml
index 0174c786..e49a0a28 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -3,7 +3,7 @@ spack:
     # General
     - py-pip %gcc@10.3.0
     # EBRAINS simulators
-    - nest +python +gsl +mpi %gcc@10.3.0
+    - nest@2.20.0 +python +gsl +mpi %gcc@10.3.0
     - arbor +mpi %gcc@10.3.0
     - neuron +mpi %gcc@10.3.0
     # BrainScaleS (plus some constraining)
-- 
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