clanService/personal-computer: added more drivers

modules/clan/personal-computer/printing.nix

@@ -22,11 +22,27 @@ let
 
 in
 {
+  environment.systemPackages = [ pkgs.simple-scan ];
+  nixpkgs.config.allowUnfreePredicate =
+    pkg:
+    builtins.elem (lib.getName pkg) [
+      "brgenml1lpr"
+      "cups-brother-dcpt310"
+      "cups-brother-dcpt720dw"
+      "cups-brother-dcpt725dw"
+    ];
+  # nixpkgs.config.allowUnfree = true;
+  services.ipp-usb.enable = true;
   services.printing = {
     enable = true;
     drivers = [
       pkgs.brlaser
       pkgs.gutenprint
+      pkgs.brgenml1lpr
+      pkgs.brgenml1cupswrapper
+      pkgs.cups-brother-dcpt310
+      pkgs.cups-brother-dcpt720dw
+      pkgs.cups-brother-dcpt725dw
     ];
 
     extraFilesConf = ''