From 8eb4f735dc230fb8135b7e513cfc51eb66d937a9 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 29 Sep 2023 10:48:27 +0200
Subject: [PATCH] fetchTree: Only use the registry if flakes are enabled

---
 src/libexpr/primops/fetchTree.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libexpr/primops/fetchTree.cc b/src/libexpr/primops/fetchTree.cc
index 1e2cee77b..3d7a85047 100644
--- a/src/libexpr/primops/fetchTree.cc
+++ b/src/libexpr/primops/fetchTree.cc
@@ -152,7 +152,7 @@ static void fetchTree(
         }
     }
 
-    if (!evalSettings.pureEval && !input.isDirect())
+    if (!evalSettings.pureEval && !input.isDirect() && experimentalFeatureSettings.isEnabled(Xp::Flakes))
         input = lookupInRegistries(state.store, input).first;
 
     if (evalSettings.pureEval && !input.isLocked())