* querySubstitutablePathInfo: work properly when run via the daemon.

* --dry-run: print the paths that we don't know how to build/substitute.

1 files changed, 10 insertions, 1 deletions

diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index b7e60043d640..bc04c8adb9ab 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -216,7 +216,16 @@ bool RemoteStore::hasSubstitutes(const Path & path)
 bool RemoteStore::querySubstitutablePathInfo(const Path & path,
     SubstitutablePathInfo & info)
 {
-    throw Error("not implemented");
+    writeInt(wopQuerySubstitutablePathInfo, to);
+    writeString(path, to);
+    processStderr();
+    unsigned int reply = readInt(from);
+    if (reply == 0) return false;
+    info.deriver = readString(from);
+    if (info.deriver != "") assertStorePath(info.deriver);
+    info.references = readStorePaths(from);
+    info.downloadSize = readLongLong(from);
+    return true;
 }