From 196f6a812b310e3179afcf48bf2907853246dcad Mon Sep 17 00:00:00 2001
From: Emily <vcs@emily.moe>
Date: Thu, 12 Jun 2025 23:10:07 +0100
Subject: [PATCH] =?UTF-8?q?nixos/nixpkgs/read-only:=20fix=20cross=E2=80=90?=
 =?UTF-8?q?compilation?=
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This matches the definition of `_module.args.pkgs` in the standard
Nixpkgs module, and fixes a bunch of build issues caused by use of
`nativeBuildInputs = [ pkgs.foo ];` throughout NixOS.

A fallback could be added in case we expect people might be passing
in package sets without `__splicedPackages`, although that seems like
it would be inherently broken to me.
---
 nixos/modules/misc/nixpkgs/read-only.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/misc/nixpkgs/read-only.nix b/nixos/modules/misc/nixpkgs/read-only.nix
index fa372d13e545..db43615c12f0 100644
--- a/nixos/modules/misc/nixpkgs/read-only.nix
+++ b/nixos/modules/misc/nixpkgs/read-only.nix
@@ -63,7 +63,7 @@ in
       # find mistaken definitions
       builtins.seq cfg.config builtins.seq cfg.overlays builtins.seq cfg.hostPlatform builtins.seq
         cfg.buildPlatform
-        cfg.pkgs;
+        cfg.pkgs.__splicedPackages;
     nixpkgs.config = cfg.pkgs.config;
     nixpkgs.overlays = cfg.pkgs.overlays;
     nixpkgs.hostPlatform = cfg.pkgs.stdenv.hostPlatform;