diff --git a/hosts/common.nix b/hosts/common.nix
index d8e02e2..cdbbbe6 100644
--- a/hosts/common.nix
+++ b/hosts/common.nix
@@ -1,42 +1,27 @@
 { pkgs, config, inputs, secrets, ... }:
 let
   inherit (pkgs) lib;
-  # inherit (specialArgs) machineVars;
+  inherit (specialArgs) machineVars;
   # inherit (config) machineVars;
   # has_graphics = !config.machineVars.headless;
 in {
-  time.timeZone = "Europe/Oslo";
-
-  i18n.defaultLocale = "en_US.UTF-8";
-
   nixpkgs.config = {
     allowUnfree = true;
   };
 
-  console = {
-    font = "Lat2-Terminus16";
-    keyMap = "us";
-  };
-
-  networking = {
-    useDHCP = false;
-    nameservers = [
-      "1.1.1.1"
-      "8.8.8.8"
-    ];
-  };
-
   nix = {
     package = pkgs.nixFlakes;
+    distributedBuilds = machineVars.hostname != "Tsuki";
+    binaryCaches = [
+      "https://cache.nixos.org/"
+    ];
+
     extraOptions = ''
       experimental-features = nix-command flakes
       builders-use-substitutes = true
     '';
 
-    distributedBuilds = (config.networking.hostName != "Tsuki");
-    binaryCaches = [
-      "https://cache.nixos.org/"
-    ];
+    trustedUsers = [ "h7x4" ];
 
     buildMachines = [
       {
@@ -53,6 +38,40 @@ in {
         mandatoryFeatures = [];
       }
     ];
+    # registry = {
+
+    # };
+  };
+
+  time.timeZone = "Europe/Oslo";
+
+  console = {
+    font = "Lat2-Terminus16";
+    keyMap = "us";
+  };
+
+  networking = {
+    useDHCP = false;
+    nameservers = [
+      "1.1.1.1"
+      "8.8.8.8"
+    ];
+  };
+
+  i18n = {
+    defaultLocale = "en_US.UTF-8";
+    inputMethod = lib.mkIf (!machineVars.headless) {
+      enabled = "fcitx";
+      fcitx.engines = with pkgs.fcitx-engines; [ mozc ];
+    };
+
+    # inputMethod = {
+    #   enabled = "fcitx5";
+    #   fcitx5.addons = with pkgs; [
+    #     fcitx5-mozc
+    #     fcitx5-gtk
+    #   ];
+    # };
   };
 
   environment = {
@@ -73,6 +92,12 @@ in {
       dash
     ];
 
+    systemPackages = with pkgs; [
+      wget
+    ] ++ (lib.optionals (!machineVars.headless) [
+      haskellPackages.xmobar
+    ]);
+
     etc = {
       # TODO: move this out of etc, and reference it directly in sudo config.
       sudoLecture = {
@@ -99,6 +124,18 @@ in {
         in concatStringsSep "\n" sortedUnique;
       };
     };
+
+    shellAliases.fixDisplay = let
+      inherit (config.machineVars) screens headless fixDisplayCommand;
+      screenToArgs = screen: with screen;
+        "--output ${name} --mode ${resolution}"
+        + (lib.optionalString (frequency != null) " --rate ${frequency}");
+      screenArgs = lib.concatStringsSep " " (lib.mapAttrsToList screenToArgs screens);
+    in lib.mkIf (!headless)
+      (lib.mkMerge [
+        "xrandr ${screenArgs}"
+        (lib.mkIf (fixDisplayCommand != null) fixDisplayCommand)
+      ]);
   };
 
   fonts = {
@@ -123,6 +160,7 @@ in {
       noto-fonts-cjk-sans
       noto-fonts-cjk-serif
       noto-fonts-emoji
+      ocr-a
       open-sans
       source-han-sans
       source-sans
@@ -142,19 +180,26 @@ in {
     };
   };
 
-  users.users.h7x4 = {
-    isNormalUser = true;
-    shell = pkgs.zsh;
-    extraGroups = [
-      "wheel"
-      "networkmanager"
-      "docker"
-      "audio"
-      "video"
-      "disk"
-      "libvirtd"
-      "input"
-    ];
+  users = {
+    users.h7x4 = {
+      isNormalUser = true;
+      shell = pkgs.zsh;
+
+      extraGroups = [
+        "wheel"
+        "networkmanager"
+        "docker"
+        "disk"
+        "audio"
+        "video"
+        "libvirtd"
+        "input"
+      ];
+    };
+
+    groups = {
+      adbusers.members = [ "h7x4" ];
+    };
   };
 
   home-manager = {
@@ -189,7 +234,7 @@ in {
     };
 
     xserver = {
-      # TODO: What is going on here? 
+      # TODO: What is going on here?
       #       For some reason, this leads to infinite recursion.
       #       This needs to be fixed!
       #       Same with `displayManager.lightdm.enable`
@@ -268,18 +313,6 @@ in {
     };
   };
 
-  environment.shellAliases.fixDisplay = let
-    inherit (config.machineVars) screens headless fixDisplayCommand;
-    screenToArgs = screen: with screen;
-      "--output ${name} --mode ${resolution}"
-      + (lib.optionalString (frequency != null) " --rate ${frequency}");
-    screenArgs = lib.concatStringsSep " " (lib.mapAttrsToList screenToArgs screens);
-  in lib.mkIf (!headless)
-    (lib.mkMerge [
-      "xrandr ${screenArgs}"
-      (lib.mkIf (fixDisplayCommand != null) fixDisplayCommand)
-    ]);
-
   system.extraDependencies =
     lib.optionals (config.machineVars.development) (with pkgs; [
       asciidoc
diff --git a/hosts/eisei/configuration.nix b/hosts/eisei/configuration.nix
index 964e50b..4feb9f6 100644
--- a/hosts/eisei/configuration.nix
+++ b/hosts/eisei/configuration.nix
@@ -9,7 +9,7 @@ in {
   ];
 
   # TODO: See ../common.nix
-  services.xserver.enable = true; 
+  services.xserver.enable = true;
   services.xserver.displayManager.lightdm.enable = true;
 
   machineVars = {
@@ -59,21 +59,6 @@ in {
     # };
   };
 
-  i18n = {
-    inputMethod = {
-      enabled = "fcitx";
-      fcitx.engines = with pkgs.fcitx-engines; [ mozc ];
-    };
-
-    # inputMethod = {
-    #   enabled = "fcitx5";
-    #   fcitx5.addons = with pkgs; [
-    #     fcitx5-mozc
-    #     fcitx5-gtk
-    #   ];
-    # };
-  };
-
   services = {
     openssh.enable = true;
     printing.enable = true;
@@ -85,11 +70,6 @@ in {
     };
   };
 
-  hardware.bluetooth.enable = true;
-
-  virtualisation = {
-    docker.enable = true;
-    # libvirtd.enable = true;
-  };
+  hardware.bluetooth.enable = false;
 }
 
diff --git a/hosts/kasei/configuration.nix b/hosts/kasei/configuration.nix
index 2008149..3f92e88 100644
--- a/hosts/kasei/configuration.nix
+++ b/hosts/kasei/configuration.nix
@@ -14,7 +14,7 @@
     development = true;
     creative = true;
 
-    dataDrives = let 
+    dataDrives = let
       main = "/data";
     in {
       drives = { inherit main; };
@@ -51,27 +51,16 @@
   networking = {
     hostName = "kasei";
     networkmanager.enable = true;
-    interfaces.wlp5s0.useDHCP = true; 
-    interfaces.wlp2s0f0u4.useDHCP = true; 
+    interfaces.wlp2s0f0u7u3.useDHCP = true;
     firewall.enable = true;
   };
 
-  i18n = {
-    inputMethod = {
-      enabled = "fcitx";
-      fcitx.engines = with pkgs.fcitx-engines; [ mozc ];
+  environment = {
+    shellAliases = {
+      fixscreen = "xrandr --output DP-4 --mode 1920x1080 --pos 0x0 -r 144 --output DVI-D-1 --primary --mode 1920x1080 --pos 1920x0 -r 60";
     };
-
-    # inputMethod = {
-    #   enabled = "fcitx5";
-    #   fcitx5.addons = with pkgs; [
-    #     fcitx5-mozc
-    #     fcitx5-gtk
-    #   ];
-    # };
   };
 
-
   services = {
     openssh.enable = true;
     printing.enable = true;
@@ -81,6 +70,7 @@
     #     "*/5 * * * *      root    date >> /tmp/cron.log"
       ];
     };
+  };
 
   hardware.bluetooth.enable = true;
 
diff --git a/hosts/tsuki/configuration.nix b/hosts/tsuki/configuration.nix
index d03cdf3..0c6589d 100644
--- a/hosts/tsuki/configuration.nix
+++ b/hosts/tsuki/configuration.nix
@@ -29,7 +29,7 @@
 
   machineVars = {
     headless = true;
-    dataDrives = let 
+    dataDrives = let
       momiji = "/data2";
     in {
       drives = {
@@ -80,11 +80,9 @@
     };
   };
 
-  users.groups.media = {};
-
-  users.users = {
-    h7x4.extraGroups = [ "media" ];
-    media = {
+  users = {
+    groups.media = {};
+    users.media = {
       isSystemUser = true;
       group = "media";
     };
@@ -92,6 +90,5 @@
 
   virtualisation = {
     docker.enable = true;
-    libvirtd.enable = true;
   };
 }