Improve 'coroutine has finished' error message

1 files changed, 2 insertions, 0 deletions

diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index 7a4a5f5eb85d..1f42097fccfb 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -609,6 +609,8 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
             act.progress(total, info->narSize);
         });
         srcStore->narFromPath({storePath}, wrapperSink);
+    }, [&]() {
+	throw EndOfFile("NAR for '%s' fetched from '%s' is incomplete", storePath, srcStore->getUri());
     });
 
     dstStore->addToStore(*info, *source, repair, checkSigs);