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-rw-r--r--src/libstore/local-store.cc3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 7afecc1cfc62..4afe51ea91ec 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -992,8 +992,7 @@ void LocalStore::addToStore(const ValidPathInfo & info, const ref<std::string> &
         /* Lock the output path.  But don't lock if we're being called
            from a build hook (whose parent process already acquired a
            lock on this path). */
-        Strings locksHeld = tokenizeString<Strings>(getEnv("NIX_HELD_LOCKS"));
-        if (find(locksHeld.begin(), locksHeld.end(), info.path) == locksHeld.end())
+        if (!locksHeld.count(info.path))
             outputLock.lockPaths({realPath});
 
         if (repair || !isValidPath(info.path)) {