From d51ba430473368b29abfd1a8c4655da74b3a780c Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 21 Sep 2020 18:40:11 +0200
Subject: Move Callback into its own header

This gets rid of the inclusion of <future> in util.hh, cutting
compilation time by ~20s (CPU time).

Issue #4045.
---
 src/libstore/dummy-store.cc | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/libstore/dummy-store.cc')

diff --git a/src/libstore/dummy-store.cc b/src/libstore/dummy-store.cc
index 128832e60..49641c2ac 100644
--- a/src/libstore/dummy-store.cc
+++ b/src/libstore/dummy-store.cc
@@ -1,4 +1,5 @@
 #include "store-api.hh"
+#include "callback.hh"
 
 namespace nix {
 
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