From 75429919df44a2b9d036da4f2fca26cf6202a277 Mon Sep 17 00:00:00 2001
From: Eman Resu <78693624+quatquatt@users.noreply.github.com>
Date: Thu, 30 Apr 2026 09:14:05 -0400
Subject: [PATCH] pkgs/toplevel: avoid elaborating crossSystem if not passed

Later on, `if crossSystem0 == null` is performed to avoid a
`lib.systems.elaborate` if possible. We'd like to take that chance!
---
 pkgs/top-level/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/top-level/default.nix b/pkgs/top-level/default.nix
index 12fdbed08197..42df9d2fc674 100644
--- a/pkgs/top-level/default.nix
+++ b/pkgs/top-level/default.nix
@@ -44,7 +44,7 @@ in
   localSystem,
 
   # The system packages will ultimately be run on.
-  crossSystem ? localSystem,
+  crossSystem ? null,
 
   # Allow a configuration attribute set to be passed in as an argument.
   config ? { },