1 files changed, 4 insertions, 7 deletions
diff --git a/src/libstore/dummy-store.cc b/src/libstore/dummy-store.cc
index 98b745c3a..8f26af685 100644
--- a/src/libstore/dummy-store.cc
+++ b/src/libstore/dummy-store.cc
@@ -9,7 +9,7 @@ struct DummyStoreConfig : virtual StoreConfig {
     const std::string name() override { return "Dummy Store"; }
 };
 
-struct DummyStore : public Store, public virtual DummyStoreConfig
+struct DummyStore : public virtual DummyStoreConfig, public virtual Store
 {
     DummyStore(const std::string scheme, const std::string uri, const Params & params)
         : DummyStore(params)
@@ -17,6 +17,7 @@ struct DummyStore : public Store, public virtual DummyStoreConfig
 
     DummyStore(const Params & params)
         : StoreConfig(params)
+        , DummyStoreConfig(params)
         , Store(params)
     { }
 
@@ -54,12 +55,8 @@ struct DummyStore : public Store, public virtual DummyStoreConfig
     void narFromPath(const StorePath & path, Sink & sink) override
     { unsupported("narFromPath"); }
 
-    void ensurePath(const StorePath & path) override
-    { unsupported("ensurePath"); }
-
-    BuildResult buildDerivation(const StorePath & drvPath, const BasicDerivation & drv,
-        BuildMode buildMode) override
-    { unsupported("buildDerivation"); }
+    std::optional<const Realisation> queryRealisation(const DrvOutput&) override
+    { unsupported("queryRealisation"); }
 };
 
 static RegisterStoreImplementation<DummyStore, DummyStoreConfig> regDummyStore;