diff --git a/common/misc.nix b/common/misc.nix
index e470d54..af95d1b 100644
--- a/common/misc.nix
+++ b/common/misc.nix
@@ -1,7 +1,11 @@
 { config, lib, pkgs, ... }:
 
 {
-  nix.gc.automatic = true;
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    randomizedDelaySec = "45min";
+  };
   nix.optimise.automatic = true;
   services.fstrim.enable = true;
 }
\ No newline at end of file
diff --git a/home/qenya/xdg-mime-apps.nix b/home/qenya/xdg-mime-apps.nix
index 2fee46c..b16f234 100644
--- a/home/qenya/xdg-mime-apps.nix
+++ b/home/qenya/xdg-mime-apps.nix
@@ -7,6 +7,7 @@ in
   xdg.mimeApps = {
     enable = isGraphical;
     defaultApplications = {
+      "application/pdf" = [ "org.gnome.Evince.desktop" "org.kde.okular.desktop" ];
       "application/zip" = [ "org.gnome.FileRoller.desktop" "org.kde.ark.desktop" ];
       "image/gif" = [ "org.gnome.Loupe.desktop" "org.kde.gwenview.desktop" ];
       "image/jpeg" = [ "org.gnome.Loupe.desktop" "org.kde.gwenview.desktop" ];
diff --git a/hosts/kilgharrah/hardware.nix b/hosts/kilgharrah/hardware.nix
index f00dfbd..10f0f48 100644
--- a/hosts/kilgharrah/hardware.nix
+++ b/hosts/kilgharrah/hardware.nix
@@ -25,5 +25,7 @@
   #     persistencedSha256 = "sha256-d0Q3Lk80JqkS1B54Mahu2yY/WocOqFFbZVBh+ToGhaE=";
   #     patches = [ rcu_patch ];
   #   };
+
+  services.printing.drivers = [ pkgs.hplip ];
 }
 
diff --git a/hosts/tohru/hardware.nix b/hosts/tohru/hardware.nix
index 715ed4f..a2515bd 100644
--- a/hosts/tohru/hardware.nix
+++ b/hosts/tohru/hardware.nix
@@ -4,5 +4,7 @@
   hardware.enableAllFirmware = true;
   hardware.cpu.intel.updateMicrocode = true;
   services.fwupd.enable = true;
+
+  services.printing.drivers = [ pkgs.hplip ];
 }