From 68fe0d9809a269341901d95f33aebeacbed34afc Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Fri, 13 Mar 2020 21:24:35 -0400
Subject: [PATCH] Add missing `#include <regex>`

---
 src/libexpr/eval.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index f3e8a34bd..eac53b894 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -7,6 +7,7 @@
 #include "hash.hh"
 #include "config.hh"
 
+#include <regex>
 #include <map>
 #include <optional>
 #include <unordered_map>