From 6f8fd3a3f22de24223bba05635aaa62107d92767 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 3 Jul 2020 14:50:07 +0200
Subject: [PATCH] Shut up a clang warning

---
 src/libfetchers/cache.hh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libfetchers/cache.hh b/src/libfetchers/cache.hh
index d76ab1233..3db4f081c 100644
--- a/src/libfetchers/cache.hh
+++ b/src/libfetchers/cache.hh
@@ -6,6 +6,8 @@ namespace nix::fetchers {
 
 struct Cache
 {
+    virtual ~Cache() { }
+
     virtual void add(
         ref<Store> store,
         const Attrs & inAttrs,