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-rw-r--r--src/libstore/derivations.hh6
1 files changed, 1 insertions, 5 deletions
diff --git a/src/libstore/derivations.hh b/src/libstore/derivations.hh
index 27e471d885cc..8f22b4afa6a1 100644
--- a/src/libstore/derivations.hh
+++ b/src/libstore/derivations.hh
@@ -1,5 +1,4 @@
-#ifndef __DERIVATIONS_H
-#define __DERIVATIONS_H
+#pragma once
 
 #include <map>
 
@@ -81,6 +80,3 @@ typedef std::map<Path, Hash> DrvHashes;
 extern DrvHashes drvHashes;
 
 }
-
-
-#endif /* !__DERIVATIONS_H */