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-rw-r--r--src/libstore/gc.cc5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index ae03604fa..f8c4a0723 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -621,6 +621,11 @@ void LocalStore::tryToDelete(GCState & state, const Path & path)
/* Don't delete .chroot directories for derivations that are
currently being built. */
if (isActiveTempFile(state, path, ".chroot")) return;
+
+ /* Don't delete .check directories for derivations that are
+ currently being built, because we may need to run
+ diff-hook. */
+ if (isActiveTempFile(state, path, ".check")) return;
}
PathSet visited;