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-rw-r--r--tests/case-hack.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/case-hack.sh b/tests/case-hack.sh
index ebc7cb1d5d65..61bf9b94bf5c 100644
--- a/tests/case-hack.sh
+++ b/tests/case-hack.sh
@@ -16,4 +16,4 @@ cmp case.nar $TEST_ROOT/case.nar
 # Check whether we detect true collisions (e.g. those remaining after
 # removal of the suffix).
 touch "$TEST_ROOT/case/xt_CONNMARK.h~nix~case~hack~3"
-! nix-store $opts --dump $TEST_ROOT/case > /dev/null
+(! nix-store $opts --dump $TEST_ROOT/case > /dev/null)