From 523250d18b4b1ec54631ae0477b6e5a8cebf3ba5 Mon Sep 17 00:00:00 2001
From: eldritch horrors <pennae@lix.systems>
Date: Mon, 4 Mar 2024 09:09:36 +0100
Subject: [PATCH] Merge pull request #10055 from
 GrahamDennis/gdennis/faster-flake-lock-parsing

Faster flake.lock parsing

(cherry picked from commit ff4fa4dbd307fb155155421a7ec0625383dcedeb)
Change-Id: I34325834770db66fa56f0d8d02d3d2322dea3c65
---
 src/libexpr/flake/lockfile.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libexpr/flake/lockfile.cc b/src/libexpr/flake/lockfile.cc
index 3c202967a..12d304c18 100644
--- a/src/libexpr/flake/lockfile.cc
+++ b/src/libexpr/flake/lockfile.cc
@@ -89,7 +89,7 @@ LockFile::LockFile(const nlohmann::json & json, const Path & path)
                 std::string inputKey = i.value();
                 auto k = nodeMap.find(inputKey);
                 if (k == nodeMap.end()) {
-                    auto nodes = json["nodes"];
+                    auto & nodes = json["nodes"];
                     auto jsonNode2 = nodes.find(inputKey);
                     if (jsonNode2 == nodes.end())
                         throw Error("lock file references missing node '%s'", inputKey);