nix: lazy way to add groups

nixcfgs/modules/nixos/core/configuration.nix

@@ -30,9 +30,6 @@
     isNormalUser = true;
     extraGroups = [
       "wheel"
-      "docker"
-      "libvirtd"
-      "dialout"
     ]; # Enable ‘sudo’ for the user.
     openssh.authorizedKeys.keys = [
       "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJToUo2jT3qt7eHIME9e1awabZZVmtKhbxwVz9BMSM2d js0ny@zephyrus"

nixcfgs/modules/nixos/desktop/de/kde.nix

@@ -5,5 +5,4 @@
     korganizer
     kdepim-addons
   ];
-  services.xserver.desktopManager.cinnamon.enable = true;
 }

nixcfgs/modules/nixos/hardware/udev/basys3.nix

@@ -1,6 +1,9 @@
-{...}: {
+{config, ...}: {
   # Xilinx Artix-7 Basys 3
   services.udev.extraRules = ''
     ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6010", MODE="0660", GROUP="dialout", SYMLINK+="basys3"
   '';
+  users.users.${config.var.username} = {
+    extraGroups = ["dialout"];
+  };
 }

nixcfgs/modules/nixos/programs/libvirt.nix

@@ -1,4 +1,8 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  config,
+  ...
+}: {
   environment.systemPackages = with pkgs; [
     virt-manager
     dnsmasq
@@ -13,7 +17,7 @@
       swtpm.enable = true;
     };
   };
-  users.users.js0ny = {
+  users.users.${config.var.username} = {
     extraGroups = ["libvirtd"];
   };
   networking.firewall.trustedInterfaces = ["virbr0"];

nixcfgs/modules/nixos/services/docker.nix

@@ -1,8 +1,11 @@
-{pkgs, ...}: {
+{config, ...}: {
   virtualisation = {
     docker.enable = true;
     podman.enable = true;
   };
+  users.users.${config.var.username} = {
+    extraGroups = ["docker" "podman"];
+  };
 
   # systemd.services.docker = {
   #   serviceConfig = {