Simplify the callback mechanism

1 files changed, 4 insertions, 5 deletions

diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index a157c6c48582..b72c940cdcf9 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -294,10 +294,9 @@ void RemoteStore::querySubstitutablePathInfos(const PathSet & paths,
 
 
 void RemoteStore::queryPathInfoUncached(const Path & path,
-    std::function<void(std::shared_ptr<ValidPathInfo>)> success,
-    std::function<void(std::exception_ptr exc)> failure)
+    Callback<std::shared_ptr<ValidPathInfo>> callback)
 {
-    sync2async<std::shared_ptr<ValidPathInfo>>(success, failure, [&]() {
+    try {
         auto conn(connections->get());
         conn->to << wopQueryPathInfo << path;
         try {
@@ -324,8 +323,8 @@ void RemoteStore::queryPathInfoUncached(const Path & path,
             info->sigs = readStrings<StringSet>(conn->from);
             conn->from >> info->ca;
         }
-        return info;
-    });
+        callback(std::move(info));
+    } catch (...) { callback.rethrow(); }
 }