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-rw-r--r--src/libstore/store-api.hh1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh
index 6ee2d55067..7c5b495a44 100644
--- a/src/libstore/store-api.hh
+++ b/src/libstore/store-api.hh
@@ -22,6 +22,7 @@ MakeError(SubstError, Error)
 MakeError(BuildError, Error) /* denotes a permanent build failure */
 MakeError(InvalidPath, Error)
 MakeError(Unsupported, Error)
+MakeError(SubstituteGone, Error)
 
 
 struct BasicDerivation;