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-rw-r--r--src/libstore/globals.hh5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libstore/globals.hh b/src/libstore/globals.hh
index 51fa68594798..ea15da0e644b 100644
--- a/src/libstore/globals.hh
+++ b/src/libstore/globals.hh
@@ -67,6 +67,11 @@ extern string thisSystem;
    infinity. */
 extern unsigned int maxSilentTime;
 
+/* The substituters.  There are programs that can somehow realise a
+   store path without building, e.g., by downloading it or copying it
+   from a CD. */
+extern Paths substituters;
+
 
 Strings querySetting(const string & name, const Strings & def);