feat: introduce treefmt and fmt all

nix/os/devices/steveej-pa600/system.nix

@@ -1,11 +1,5 @@
+{ pkgs, lib, ... }:
 {
-  pkgs,
-  lib,
-  config,
-  ...
-}: let
-  keys = import ../../../variables/keys.nix;
-in {
   # TASK: new device
   networking.hostName = "steveej-pa600"; # Define your hostname.
 
@@ -20,7 +14,11 @@ in {
 
   services.printing = {
     enable = true;
-    drivers = with pkgs; [hplip mfcl3770cdw.driver mfcl3770cdw.cupswrapper];
+    drivers = with pkgs; [
+      hplip
+      mfcl3770cdw.driver
+      mfcl3770cdw.cupswrapper
+    ];
   };
 
   services.fprintd.enable = true;
@@ -29,9 +27,9 @@ in {
     sudo.fprintAuth = true;
   };
 
-  security.pki.certificateFiles = ["${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"];
+  security.pki.certificateFiles = [ "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt" ];
 
-  services.xserver.videoDrivers = ["modesetting"];
+  services.xserver.videoDrivers = [ "modesetting" ];
   services.xserver.serverFlagsSection = ''
     Option "BlankTime" "0"
     Option "StandbyTime" "0"