unbreak build without pch

(cherry picked from commit d64ab5131c)
This commit is contained in:
John Ericson authored and Eelco Dolstra committed 2020-06-02 23:09:19 +02:00
1 parent 734488a00f
commit d2008f2fff
1 file changed
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@@ -7,6 +7,7 @@
#include <map>
#include <thread>
#include <dlfcn.h>
#include <sys/utsname.h>
namespace nix {