From afa623a18edb6354eee56f763ad52bc68f821f2c Mon Sep 17 00:00:00 2001
From: Arne Morten Kvarving <arne.morten.kvarving@sintef.no>
Date: Tue, 24 Jun 2025 13:45:57 +0200
Subject: [PATCH] BlackOilEnergyExtensiveQuantities: properly implement partial
 specialization

for disabling in energy-less runs
---
 opm/models/blackoil/blackoilenergymodules.hh       | 7 +++++--
 opm/models/blackoil/blackoilextensivequantities.hh | 2 +-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/opm/models/blackoil/blackoilenergymodules.hh b/opm/models/blackoil/blackoilenergymodules.hh
index 64deb1567c..031a1dd29b 100644
--- a/opm/models/blackoil/blackoilenergymodules.hh
+++ b/opm/models/blackoil/blackoilenergymodules.hh
@@ -511,6 +511,9 @@ protected:
     { return *static_cast<Implementation*>(this); }
 };
 
+template <class TypeTag, bool enableEnergyV>
+class BlackOilEnergyExtensiveQuantities;
+
 /*!
  * \ingroup BlackOil
  * \class Opm::BlackOilEnergyExtensiveQuantities
@@ -518,8 +521,8 @@ protected:
  * \brief Provides the energy specific extensive quantities to the generic black-oil
  *        module's extensive quantities.
  */
-template <class TypeTag, bool enableEnergyV = getPropValue<TypeTag, Properties::EnableEnergy>()>
-class BlackOilEnergyExtensiveQuantities
+template <class TypeTag>
+class BlackOilEnergyExtensiveQuantities<TypeTag, /*enableEnergyV=*/true>
 {
     using Implementation = GetPropType<TypeTag, Properties::ExtensiveQuantities>;
 
diff --git a/opm/models/blackoil/blackoilextensivequantities.hh b/opm/models/blackoil/blackoilextensivequantities.hh
index c984b4c9e2..837bec212a 100644
--- a/opm/models/blackoil/blackoilextensivequantities.hh
+++ b/opm/models/blackoil/blackoilextensivequantities.hh
@@ -53,7 +53,7 @@ class BlackOilExtensiveQuantities
     : public MultiPhaseBaseExtensiveQuantities<TypeTag>
     , public BlackOilSolventExtensiveQuantities<TypeTag, getPropValue<TypeTag, Properties::EnableSolvent>()>
     , public BlackOilPolymerExtensiveQuantities<TypeTag, getPropValue<TypeTag, Properties::EnablePolymer>()>
-    , public BlackOilEnergyExtensiveQuantities<TypeTag>
+    , public BlackOilEnergyExtensiveQuantities<TypeTag, getPropValue<TypeTag, Properties::EnableEnergy>()>
     , public BlackOilDiffusionExtensiveQuantities<TypeTag, getPropValue<TypeTag, Properties::EnableDiffusion>()>
     , public BlackOilMICPExtensiveQuantities<TypeTag>
 {