nix config udpate; polish top-level Justfile

nix/os/devices/steveej-laptop/configuration.nix

@@ -1,6 +1,11 @@
 { ... }:
 
 {
+  nixpkgs.config = {
+    allowBroken = false;
+    allowUnfree = true;
+  };
+
   imports = [ 
     ../../profiles/common/configuration.nix
     ../../profiles/graphical/configuration.nix

nix/os/devices/steveej-laptop/system.nix

@@ -5,9 +5,9 @@
 }:
 
 let
-  unstablepkgs = import <nixos-unstable> {};
+  unstablepkgs = import <nixos-unstable> { config = config.nixpkgs; };
 
-in rec {
+in {
   # The NixOS release to be compatible with for stateful data such as databases.
   # system.stateVersion = "unstable";
 
@@ -19,6 +19,7 @@ in rec {
     server=/tectonic-ci.de/192.168.124.1
     server=/tectonic-ci.lan/192.168.124.1
   '';
+  networking.firewall.enable = lib.mkForce false;
   networking.firewall.checkReversePath = false;
 
   networking.bridges."virbr1".interfaces = [];
@@ -28,11 +29,11 @@ in rec {
 
   services.printing = {
     enable = true;
-    drivers = [
-      pkgs.hplip
-      unstablepkgs.cups-kyodialog3
-      unstablepkgs.mfcj6510dwlpr
-      unstablepkgs.mfcj6510dw-cupswrapper
+    drivers = with pkgs; [
+      hplip
+      cups-kyodialog3
+      mfcj6510dwlpr
+      mfcj6510dw-cupswrapper
     ];
   };