diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index b511668afab9fbdefcafa324e094fc6d5c3c872f..e71086e8b2df5f3d3149d188ee6cbb77de99b5cf 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -71,6 +71,7 @@ packages:
     require:
     - '@1.26'
     - +ddg4 +ddcad +hepmc3 +xercesc
+    - any_of: [+ddeve, -ddeve]
   dpmjet:
     require:
     - '@19.3.5'