From fb26285458d2c63e407b4ca78c6d96809963d237 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 27 Oct 2025 14:53:46 +0100
Subject: [PATCH] Fix #include

---
 src/nix/env.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/nix/env.cc b/src/nix/env.cc
index 0a211399a..a80bcda67 100644
--- a/src/nix/env.cc
+++ b/src/nix/env.cc
@@ -1,6 +1,7 @@
-#include <unordered_set>
 #include <queue>
 
+#include <boost/unordered/unordered_flat_set.hpp>
+
 #include "nix/cmd/command.hh"
 #include "nix/expr/eval.hh"
 #include "run.hh"