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authorEelco Dolstra <e.dolstra@tudelft.nl>2008-08-14 13:02:19 +0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2008-08-14 13:02:19 +0000
commitdb4f4a842515392a6b40f5c86b2ef885c1278451 (patch)
tree1a4cf69719915670d17ccb742655397f4b427390 /src/libstore/remote-store.cc
parent1b962fc7206bf3134b2a2097d3db0ee6d2863c47 (diff)
* Backward compatibility check to prevent nixos-rebuild from barfing
when upgrading Nix.
Diffstat (limited to 'src/libstore/remote-store.cc')
-rw-r--r--src/libstore/remote-store.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index bc04c8adb..66e525642 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -216,6 +216,7 @@ bool RemoteStore::hasSubstitutes(const Path & path)
bool RemoteStore::querySubstitutablePathInfo(const Path & path,
SubstitutablePathInfo & info)
{
+ if (GET_PROTOCOL_MINOR(daemonVersion) < 3) return false;
writeInt(wopQuerySubstitutablePathInfo, to);
writeString(path, to);
processStderr();