treewide: use `pkgs.config` instead of `config.nixpkgs.config`

`pkgs` may be passed in externally, in which case `config.nixpkgs.config` will not be set.

Follow-up to #257458.

1 files changed, 1 insertions, 1 deletions

diff --git a/nixos/modules/hardware/all-firmware.nix b/nixos/modules/hardware/all-firmware.nix
index 9e7a01c58af..08141bb0e87 100644
--- a/nixos/modules/hardware/all-firmware.nix
+++ b/nixos/modules/hardware/all-firmware.nix
@@ -69,7 +69,7 @@ in {
     })
     (mkIf cfg.enableAllFirmware {
       assertions = [{
-        assertion = !cfg.enableAllFirmware || config.nixpkgs.config.allowUnfree;
+        assertion = !cfg.enableAllFirmware || pkgs.config.allowUnfree;
         message = ''
           the list of hardware.enableAllFirmware contains non-redistributable licensed firmware files.
             This requires nixpkgs.config.allowUnfree to be true.