1 files changed, 4 insertions, 1 deletions
diff --git a/src/libstore/remote-fs-accessor.hh b/src/libstore/remote-fs-accessor.hh
index df8b7b16291e..d359ecc9c871 100644
--- a/src/libstore/remote-fs-accessor.hh
+++ b/src/libstore/remote-fs-accessor.hh
@@ -12,13 +12,16 @@ class RemoteFSAccessor : public FSAccessor
 
     std::map<Path, ref<FSAccessor>> nars;
 
+    Path cacheDir;
+
     std::pair<ref<FSAccessor>, Path> fetch(const Path & path_);
 
     friend class BinaryCacheStore;
 
 public:
 
-    RemoteFSAccessor(ref<Store> store);
+    RemoteFSAccessor(ref<Store> store,
+        const /* FIXME: use std::optional */ Path & cacheDir = "");
 
     Stat stat(const Path & path) override;