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-rw-r--r--src/nix-collect-garbage/nix-collect-garbage.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/nix-collect-garbage/nix-collect-garbage.cc b/src/nix-collect-garbage/nix-collect-garbage.cc
index bb4789aeac82..5a72cb712014 100644
--- a/src/nix-collect-garbage/nix-collect-garbage.cc
+++ b/src/nix-collect-garbage/nix-collect-garbage.cc
@@ -4,6 +4,7 @@
 #include "globals.hh"
 
 #include <iostream>
+#include <cerrno>
 
 using namespace nix;