added docker option

flake.nix

@@ -16,9 +16,9 @@
       pkgs = nixpkgs.legacyPackages.${system};
       lib = pkgs.lib;
 
+      # These will get applied to both the configured user and the root user (if enabled)
       userOptions = config: {
         openssh.authorizedKeys.keyFiles = lib.optionals config.ssh [ ./personal_keys ];
-        extraGroups = lib.optionals config.root [ "wheel" ];
         shell = lib.mkIf config.enableShell pkgs.zsh;
       };
 
@@ -65,11 +65,10 @@
         users.users.${config.user} = {
           isNormalUser = true;
           description = "John Lancaster";
-          extraGroups = [
-            "networkmanager"
-            "wheel"
-            "docker"
-          ];
+          extraGroups = []
+          ++ lib.optionals config.root [ "wheel" ]
+          ++ lib.optionals config.docker [ "docker" ]
+          ++ lib.optionals config.services.networkmanager.enable [ "networkmanager" ];
         } // userOptions config;
 
         users.users.root = lib.mkIf config.root (userOptions config);
@@ -82,6 +81,12 @@
 
         programs.zsh.enable = lib.mkIf config.enableShell true;
 
+        virtualisation.docker = lib.mkIf config.docker {
+          enable = true;
+          enableOnBoot = true;
+          package = pkgs.docker;
+        };
+
         home-manager = {
           useUserPackages = true;
           extraSpecialArgs = { inherit inputs; };

nixosModules/options.nix

@@ -53,4 +53,10 @@
     default = [];
     description = "Additional Home Manager modules to import";
   };
+
+  options.docker = lib.mkOption {
+    type = lib.types.bool;
+    default = false;
+    description = "Whether to enable docker stuff";
+  };
 }