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-rw-r--r--src/libstore/build/sandbox-defaults.sb1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstore/build/sandbox-defaults.sb b/src/libstore/build/sandbox-defaults.sb
index 77f013aea..25ec11285 100644
--- a/src/libstore/build/sandbox-defaults.sb
+++ b/src/libstore/build/sandbox-defaults.sb
@@ -68,6 +68,7 @@ R""(
(allow file*
(literal "/dev/null")
(literal "/dev/random")
+ (literal "/dev/stderr")
(literal "/dev/stdin")
(literal "/dev/stdout")
(literal "/dev/tty")