diff --git a/hosts/default.nix b/hosts/default.nix
index bcc0f60..d2e1d5a 100644
--- a/hosts/default.nix
+++ b/hosts/default.nix
@@ -37,7 +37,6 @@
           inputs.attic.nixosModules.atticd
           inputs.lix-module.nixosModules.default
           self.nixosModules.settei
-          self.nixosModules.common
           sharedOptions
           {
             disabledModules = [
@@ -54,7 +53,6 @@
           inputs.home-manager.darwinModules.home-manager
           inputs.lix-module.nixosModules.default
           self.darwinModules.settei
-          self.darwinModules.common
           sharedOptions
         ];
         specialArgs.configurationName = "base";
diff --git a/modules/system/common/default.nix b/modules/system/common/default.nix
deleted file mode 100644
index 6ba5f86..0000000
--- a/modules/system/common/default.nix
+++ /dev/null
@@ -1,86 +0,0 @@
-{ isLinux }:
-{
-  config,
-  configurationName,
-  lib,
-  pkgs,
-  inputs,
-  inputs',
-  username,
-  ...
-}:
-let
-  sharedConfig = {
-    settei = {
-      username = lib.mkDefault "niko";
-      sane-defaults = {
-        enable = lib.mkDefault true;
-      };
-      flake-qol.enable = true;
-      tailscale = {
-        enable = true;
-        tailnet = "discus-macaroni.ts.net";
-      };
-      user = {
-        enable = lib.mkDefault true;
-        # TODO: Move to settei or leave here?
-        extraArgs.machineName = configurationName;
-        config.imports = [ inputs.settei.homeModules.settei ];
-      };
-    };
-
-    programs.fish.enable = true;
-    users.users.${username}.shell = pkgs.fish;
-
-    time.timeZone = lib.mkDefault "Europe/Warsaw";
-
-    # NixOS' fish module doesn't allow setting what package to use for fish,
-    # so I need to override the fish package.
-    nixpkgs.overlays = [ (_: _: { inherit (inputs'.settei.packages) fish; }) ];
-    # TODO: Move to home/common/desktop
-    settei.unfree.allowedPackages = [ "signal-desktop" ];
-
-    nix.settings.allow-import-from-derivation = false;
-  };
-
-  linuxConfig = lib.optionalAttrs isLinux {
-    system.stateVersion = "22.05";
-
-    # https://github.com/NixOS/nixpkgs/issues/254807
-    boot.swraid.enable = false;
-
-    i18n.defaultLocale = lib.mkDefault "en_US.UTF-8";
-
-    settei.user.config = {
-      services.ssh-agent.enable = true;
-    };
-
-    services.prometheus.exporters.node = {
-      enable = true;
-      enabledCollectors = [ "systemd" ];
-    };
-  };
-
-  darwinConfig = lib.optionalAttrs (!isLinux) {
-    system.stateVersion = 4;
-
-    # Every macOS ARM machine can emulate x86.
-    nix.settings.extra-platforms = lib.mkIf pkgs.stdenv.isAarch64 [ "x86_64-darwin" ];
-  };
-in
-{
-  _file = ./default.nix;
-
-  imports = [
-    (import ./hercules.nix { inherit isLinux; })
-    (import ./user.nix { inherit isLinux; })
-    (import ./github-runner.nix { inherit isLinux; })
-    (import ./incus.nix { inherit isLinux; })
-  ];
-
-  config = lib.mkMerge [
-    sharedConfig
-    linuxConfig
-    darwinConfig
-  ];
-}
diff --git a/modules/system/common/user.nix b/modules/system/common/user.nix
deleted file mode 100644
index 236ef68..0000000
--- a/modules/system/common/user.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ isLinux }:
-{ config, lib, ... }:
-let
-  sharedConfig = { };
-
-  linuxConfig = lib.optionalAttrs isLinux { boot.kernel.sysctl."kernel.yama.ptrace_scope" = 0; };
-
-  darwinConfig = lib.optionalAttrs (!isLinux) { };
-
-  finalConfig = lib.mkMerge [
-    sharedConfig
-    linuxConfig
-    darwinConfig
-  ];
-in
-{
-  _file = ./user.nix;
-
-  config = lib.mkIf config.settei.user.enable finalConfig;
-}
diff --git a/modules/system/default.nix b/modules/system/default.nix
index d0df531..bca0a95 100644
--- a/modules/system/default.nix
+++ b/modules/system/default.nix
@@ -16,7 +16,6 @@
             inherit (config) perInput;
             inherit isLinux;
           };
-          common = import ./common { inherit isLinux; };
         }
       );
 }
diff --git a/modules/system/settei/default.nix b/modules/system/settei/default.nix
index e554482..a352333 100644
--- a/modules/system/settei/default.nix
+++ b/modules/system/settei/default.nix
@@ -4,8 +4,13 @@
   isLinux,
 }:
 {
+  config,
+  configurationName,
   lib,
-  options,
+  pkgs,
+  inputs,
+  inputs',
+  username,
   ...
 }:
 {
@@ -19,9 +24,27 @@
     (import ./tailscale.nix { inherit isLinux; })
     (import ./containers.nix { inherit isLinux; })
     ./unfree.nix
+    (import ./hercules.nix { inherit isLinux; })
+    (import ./github-runner.nix { inherit isLinux; })
+    (import ./incus.nix { inherit isLinux; })
+    (import ./monitoring.nix { inherit isLinux; })
   ];
 
   options.settei = with lib; {
-    username = mkOption { type = types.str; };
+    username = mkOption {
+      type = types.str;
+      default = "niko";
+    };
+  };
+
+  config = {
+    programs.fish.enable = true;
+    users.users.${username}.shell = pkgs.fish;
+
+    time.timeZone = lib.mkDefault "Europe/Warsaw";
+
+    # NixOS' fish module doesn't allow setting what package to use for fish,
+    # so I need to override the fish package.
+    nixpkgs.overlays = [ (_: _: { inherit (inputs'.settei.packages) fish; }) ];
   };
 }
diff --git a/modules/system/settei/flake-qol.nix b/modules/system/settei/flake-qol.nix
index 73deec4..38a5228 100644
--- a/modules/system/settei/flake-qol.nix
+++ b/modules/system/settei/flake-qol.nix
@@ -12,7 +12,9 @@ in
   _file = ./flake-qol.nix;
 
   options.settei.flake-qol = with lib; {
-    enable = mkEnableOption "QoL defaults when using flakes";
+    enable = mkEnableOption "QoL defaults when using flakes" // {
+      default = true;
+    };
     reexportAsArgs = mkOption {
       type = types.bool;
       default = true;
diff --git a/modules/system/common/github-runner.nix b/modules/system/settei/github-runner.nix
similarity index 100%
rename from modules/system/common/github-runner.nix
rename to modules/system/settei/github-runner.nix
diff --git a/modules/system/common/hercules.nix b/modules/system/settei/hercules.nix
similarity index 100%
rename from modules/system/common/hercules.nix
rename to modules/system/settei/hercules.nix
diff --git a/modules/system/common/incus.nix b/modules/system/settei/incus.nix
similarity index 100%
rename from modules/system/common/incus.nix
rename to modules/system/settei/incus.nix
diff --git a/modules/system/settei/monitoring.nix b/modules/system/settei/monitoring.nix
new file mode 100644
index 0000000..fde88fb
--- /dev/null
+++ b/modules/system/settei/monitoring.nix
@@ -0,0 +1,20 @@
+{ isLinux }:
+{ lib, ... }:
+let
+  linuxConfig = lib.optionalAttrs isLinux {
+    services.prometheus.exporters.node = {
+      enable = true;
+      enabledCollectors = [ "systemd" ];
+    };
+  };
+
+  darwinConfig = lib.optionalAttrs (!isLinux) { };
+in
+{
+  _file = ./monitoring.nix;
+
+  config = lib.mkMerge [
+    linuxConfig
+    darwinConfig
+  ];
+}
diff --git a/modules/system/settei/sane-defaults.nix b/modules/system/settei/sane-defaults.nix
index 7746c4f..3c44e89 100644
--- a/modules/system/settei/sane-defaults.nix
+++ b/modules/system/settei/sane-defaults.nix
@@ -1,12 +1,19 @@
 { isLinux }:
-{ config, lib, ... }@args:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}@args:
 let
   cfg = config.settei.sane-defaults;
   inherit (config.settei) username;
 
   options = {
     settei.sane-defaults = with lib; {
-      enable = mkEnableOption "Personal sane defaults (but they should make sense for anyone)";
+      enable = mkEnableOption "Personal sane defaults (but they should make sense for anyone)" // {
+        default = true;
+      };
       allSshKeys = mkOption {
         type = types.attrsOf types.singleLineStr;
         default = { };
@@ -52,13 +59,14 @@ let
           trusted-users = lib.optionals (!adminNeedsPassword) [ username ];
           use-xdg-base-directories = true;
           auto-allocate-uids = true;
+          allow-import-from-derivation = false;
           extra-substituters = [
-            "https://hyprland.cachix.org"
+            "https://cache.nrab.lol"
             "https://cache.garnix.io"
             "https://nix-community.cachix.org"
+            "https://hyprland.cachix.org"
             "https://hercules-ci.cachix.org"
             "https://nrabulinski.cachix.org"
-            "https://cache.nrab.lol"
           ];
           extra-trusted-public-keys = [
             "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
@@ -93,14 +101,25 @@ let
     # TODO: Actually this should be extraRules which makes wheel users without any password set
     #       be able to use sudo with no password
     security.sudo.wheelNeedsPassword = false;
+
+    system.stateVersion = "22.05";
+
+    # https://github.com/NixOS/nixpkgs/issues/254807
+    boot.swraid.enable = false;
+
+    i18n.defaultLocale = lib.mkDefault "en_US.UTF-8";
+    boot.kernel.sysctl."kernel.yama.ptrace_scope" = 0;
   };
 
   darwinConfig = lib.optionalAttrs (!isLinux) {
+    system.stateVersion = 4;
     services.nix-daemon.enable = true;
 
     security.pam.enableSudoTouchIdAuth = true;
 
     users.users.${username}.home = "/Users/${username}";
+    # Every macOS ARM machine can emulate x86.
+    nix.settings.extra-platforms = lib.mkIf pkgs.stdenv.isAarch64 [ "x86_64-darwin" ];
   };
 in
 {
diff --git a/modules/system/settei/tailscale.nix b/modules/system/settei/tailscale.nix
index ded880a..fb35752 100644
--- a/modules/system/settei/tailscale.nix
+++ b/modules/system/settei/tailscale.nix
@@ -11,8 +11,13 @@ let
   cfg = config.settei.tailscale;
 
   options.settei.tailscale = {
-    enable = mkEnableOption "Tailscale configuration";
-    tailnet = mkOption { type = types.str; };
+    enable = mkEnableOption "Tailscale configuration" // {
+      default = true;
+    };
+    tailnet = mkOption {
+      type = types.str;
+      default = "discus-macaroni.ts.net";
+    };
     ipv4 = mkOption { type = types.str; };
     ipv6 = mkOption { type = types.str; };
   };
diff --git a/modules/system/settei/user.nix b/modules/system/settei/user.nix
index 79856bc..7d0637a 100644
--- a/modules/system/settei/user.nix
+++ b/modules/system/settei/user.nix
@@ -2,6 +2,8 @@
   config,
   options,
   lib,
+  inputs,
+  configurationName,
   ...
 }@args:
 let
@@ -13,7 +15,9 @@ in
   _file = ./user.nix;
 
   options.settei.user = with lib; {
-    enable = mkEnableOption "User-specific configuration";
+    enable = mkEnableOption "User-specific configuration" // {
+      default = true;
+    };
     config = mkOption {
       type = types.deferredModule;
       default = { };
@@ -31,12 +35,16 @@ in
         home-manager.useUserPackages = true;
         home-manager.extraSpecialArgs = {
           inherit (args) inputs inputs';
+          machineName = configurationName;
         } // cfg.extraArgs;
 
         home-manager.users.${username} = {
           _file = ./user.nix;
 
-          imports = [ cfg.config ];
+          imports = [
+            inputs.settei.homeModules.settei
+            cfg.config
+          ];
 
           home = {
             inherit username;
@@ -45,6 +53,7 @@ in
           };
 
           programs.home-manager.enable = true;
+          services.ssh-agent.enable = true;
         };
       };
     in