diff --git a/nixos/common-hardware.nix b/nixos/common-hardware.nix
index 6cdc55cf..730e5b69 100644
--- a/nixos/common-hardware.nix
+++ b/nixos/common-hardware.nix
@@ -1,5 +1,4 @@
-{ config, pkgs, nixpkgs-nixos-unstable-and-unfree, lib, ... }:
-{
+{ config, pkgs, nixpkgs-nixos-unstable-and-unfree, lib, ... }: {
   boot.kernelModules = [ "fuse" ];
   services.smartd.enable = true;
 
@@ -7,30 +6,28 @@
 
   networking.networkmanager = {
     enable = true;
-    dispatcherScripts = [
-      {
-        source = pkgs.writeText "upHook" ''
-          enable_disable_wifi ()
-          {
-            result=$(nmcli dev | grep "ethernet" | grep -w "connected")
-            if [ -n "$result" ]; then
-              nmcli radio wifi off
-            else
-              nmcli radio wifi on
-            fi
-          }
-
-          if [ "$2" = "up" ]; then
-            enable_disable_wifi
+    dispatcherScripts = [{
+      source = pkgs.writeText "upHook" ''
+        enable_disable_wifi ()
+        {
+          result=$(nmcli dev | grep "ethernet" | grep -w "connected")
+          if [ -n "$result" ]; then
+            nmcli radio wifi off
+          else
+            nmcli radio wifi on
           fi
+        }
 
-          if [ "$2" = "down" ]; then
-            enable_disable_wifi
-          fi
-        '';
-        type = "basic";
-      }
-    ];
+        if [ "$2" = "up" ]; then
+          enable_disable_wifi
+        fi
+
+        if [ "$2" = "down" ]; then
+          enable_disable_wifi
+        fi
+      '';
+      type = "basic";
+    }];
   };
 
   hardware.enableRedistributableFirmware = true;
@@ -49,16 +46,22 @@
   hardware.bluetooth = {
     enable = true;
     package = pkgs.bluezFull;
-    settings = {
-      General = { Enable = "Source,Sink,Media,Socket"; };
-    };
+    settings = { General = { Enable = "Source,Sink,Media,Socket"; }; };
   };
 
   services.blueman.enable = true;
 
+  environment.systemPackages = with pkgs; [ ghostscript poppler ];
   services.printing = {
     enable = true;
-    drivers = with pkgs; [ epson-escpr nixpkgs-nixos-unstable-and-unfree.samsung-unified-linux-driver ];
+    drivers = with pkgs; [
+      epson-escpr
+      nixpkgs-nixos-unstable-and-unfree.samsung-unified-linux-driver
+      gutenprint
+    ];
+    extraConf = ''
+      Option pdftops-renderer hybrid
+    '';
   };
 
   hardware.printers.ensurePrinters = [
@@ -66,21 +69,30 @@
       description = "Epson XP-540 via bolty";
       name = "epson_xp540_via_bolty";
       deviceUri = "ipp://bolty:631/printers/epson_xp540";
-      model = "epson-inkjet-printer-escpr/Epson-XP-540_Series-epson-escpr-en.ppd";
-      ppdOptions = { PageSize = "A4"; Duplex = "DuplexNoTumble"; };
+      model =
+        "epson-inkjet-printer-escpr/Epson-XP-540_Series-epson-escpr-en.ppd";
+      ppdOptions = {
+        PageSize = "A4";
+        Duplex = "DuplexNoTumble";
+      };
     }
     {
       description = "Samsung SCX-4623 Series";
       name = "samsung-SCX-4623";
-      deviceUri = "usb://Samsung/SCX-4623%20Series?serial=Z2TYBFFZC01007W&interface=1";
+      deviceUri =
+        "usb://Samsung/SCX-4623%20Series?serial=Z2TYBFFZC01007W&interface=1";
       model = "samsung/SCX-4623FW.ppd";
-      ppdOptions = { PageSize = "A4"; Duplex = "DuplexNoTumble"; };
+      ppdOptions = {
+        PageSize = "A4";
+        Duplex = "DuplexNoTumble";
+      };
     }
   ];
 
   hardware.sane = {
     enable = true;
-    extraBackends = with pkgs; [ nixpkgs-nixos-unstable-and-unfree.samsung-unified-linux-driver ];
+    extraBackends = with pkgs;
+      [ nixpkgs-nixos-unstable-and-unfree.samsung-unified-linux-driver ];
   };
 
   powerManagement = {