Sink: Use std::string_view

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index 3b2be05cb..27be66cac 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -772,8 +772,8 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
     }
 
     auto source = sinkToSource([&](Sink & sink) {
-        LambdaSink progressSink([&](const unsigned char * data, size_t len) {
-            total += len;
+        LambdaSink progressSink([&](std::string_view data) {
+            total += data.size();
             act.progress(total, info->narSize);
         });
         TeeSink tee { sink, progressSink };