1 files changed, 3 insertions, 2 deletions
diff --git a/src/libstore/local-fs-store.hh b/src/libstore/local-fs-store.hh
index f8b19d00d..d34f0cb62 100644
--- a/src/libstore/local-fs-store.hh
+++ b/src/libstore/local-fs-store.hh
@@ -27,7 +27,7 @@ class LocalFSStore : public virtual LocalFSStoreConfig, public virtual Store
 {
 public:
 
-    const static string drvsLogDir;
+    const static std::string drvsLogDir;
 
     LocalFSStore(const Params & params);
 
@@ -45,7 +45,8 @@ public:
         return getRealStoreDir() + "/" + std::string(storePath, storeDir.size() + 1);
     }
 
-    std::shared_ptr<std::string> getBuildLog(const StorePath & path) override;
+    std::optional<std::string> getBuildLog(const StorePath & path) override;
+
 };
 
 }