diff --git a/hosts/nom/fs.nix b/hosts/nom/fs.nix
index a7e1af6..66e2de1 100644
--- a/hosts/nom/fs.nix
+++ b/hosts/nom/fs.nix
@@ -1,4 +1,4 @@
-{config, ...}: {
+{
   fileSystems = {
     "/" = {
       device = "rpool/root/nixos";
diff --git a/modules/zfs.nix b/modules/zfs.nix
index 63180e8..c1dda8a 100644
--- a/modules/zfs.nix
+++ b/modules/zfs.nix
@@ -1,4 +1,8 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  config,
+  ...
+}: {
   boot.supportedFilesystems = ["zfs"];
   boot.kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
 
diff --git a/users/myuser/core/default.nix b/users/myuser/core/default.nix
index 3d8c203..4029100 100644
--- a/users/myuser/core/default.nix
+++ b/users/myuser/core/default.nix
@@ -20,7 +20,6 @@
     packages = with pkgs; [
       bandwhich
       btop
-      colorcheck
       fd
       kalker
       neofetch
diff --git a/users/myuser/default.nix b/users/myuser/default.nix
index 43e0f7a..4f70da5 100644
--- a/users/myuser/default.nix
+++ b/users/myuser/default.nix
@@ -22,6 +22,7 @@ with lib; {
       #impermanence.home-manager.impermanence
       ./core
       ./dev
+      ./modules
       #]
       #++ optionals config.programs.sway.enable [
       #  ./graphical
diff --git a/users/myuser/dev/default.nix b/users/myuser/dev/default.nix
index 6627584..2d501fd 100644
--- a/users/myuser/dev/default.nix
+++ b/users/myuser/dev/default.nix
@@ -1,8 +1,4 @@
-{
-  lib,
-  pkgs,
-  ...
-}: {
+{pkgs, ...}: {
   home = {
     extraOutputsToInstall = ["doc" "devdoc"];
     file.gdbinit = {
diff --git a/users/myuser/modules/default.nix b/users/myuser/modules/default.nix
new file mode 100644
index 0000000..db4ab03
--- /dev/null
+++ b/users/myuser/modules/default.nix
@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./uid.nix
+  ];
+}
diff --git a/users/myuser/modules/uid.nix b/users/myuser/modules/uid.nix
new file mode 100644
index 0000000..4bd9697
--- /dev/null
+++ b/users/myuser/modules/uid.nix
@@ -0,0 +1,22 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib; {
+  options = {
+    home.uid = mkOption {
+      type = types.int;
+      example = 1000;
+      description = "The user's uid.";
+    };
+  };
+  config = {
+    assertions = [
+      {
+        assertion = config.home.uid != "";
+        message = "UID could not be determined";
+      }
+    ];
+  };
+}