From 169384abb2bcfb687c8ad5959896738a76f3452e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Na=C3=AFm=20Favier?= <n@monade.li>
Date: Wed, 18 May 2022 11:33:04 +0200
Subject: Do not attempt to write a lock file in builtins.getFlake

Fixes https://github.com/NixOS/nix/issues/6541
---
 src/libexpr/flake/flake.cc | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/libexpr/flake/flake.cc')

diff --git a/src/libexpr/flake/flake.cc b/src/libexpr/flake/flake.cc
index cbf4f0a6f..35c841897 100644
--- a/src/libexpr/flake/flake.cc
+++ b/src/libexpr/flake/flake.cc
@@ -723,6 +723,7 @@ static void prim_getFlake(EvalState & state, const PosIdx pos, Value * * args, V
         lockFlake(state, flakeRef,
             LockFlags {
                 .updateLockFile = false,
+                .writeLockFile = false,
                 .useRegistries = !evalSettings.pureEval && fetchSettings.useRegistries,
                 .allowMutable  = !evalSettings.pureEval,
             }),
-- 
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