From 060bfe5084c9d2ca4d32bfee035a4c32dfa9936a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9ophane=20Hufschmitt?=
 <theophane.hufschmitt@tweag.io>
Date: Fri, 1 Jul 2022 09:46:31 +0200
Subject: [PATCH] Add a missing `optional` include

Fix the build with GCC 11.3.0
---
 src/nix-find-roots/lib/find-roots.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/nix-find-roots/lib/find-roots.cc b/src/nix-find-roots/lib/find-roots.cc
index b2024439d..43465ed6b 100644
--- a/src/nix-find-roots/lib/find-roots.cc
+++ b/src/nix-find-roots/lib/find-roots.cc
@@ -12,6 +12,7 @@
 #include <vector>
 #include <algorithm>
 #include <fstream>
+#include <optional>
 
 #include "find-roots.hh"