OS, add Non-EFI Support

nixosModules/automatic/default.nix

@@ -4,60 +4,68 @@
   options = {
     system.timezone = lib.mkOption { default = "America/Los_Angeles"; };
     system.extraFonts = lib.mkOption { default = []; };
+    system.isNonEFI = lib.mkEnableOption 
+      "Enable if you are running a non-EFI system";
     system.users.bigWheels = lib.mkOption { default = []; };
   };
+  
+  config = lib.mkMerge [
+    (lib.mkIf config.system.isNonEFI {
+      boot.loader.grub.enable = false;
+      boot.loader.generic-extlinux-compatible.enable = true;
+    }) 
+    (lib.mkIf (!config.system.isNonEFI) {
+      boot.kernelPackages = pkgs.linuxPackages_latest;
+      boot.loader.systemd-boot.enable = true;
+      boot.loader.timeout = 1;
+      boot.loader.efi.canTouchEfiVariables = true;
+    })
+    {
+      networking.hostName = hostname;
+      system.stateVersion = "23.05";
 
-  config = {
-    # Use the systemd-boot EFI boot loader.
-    boot.kernelPackages = pkgs.linuxPackages_latest;
-    boot.loader.systemd-boot.enable = true;
-    boot.loader.timeout = 1;
-    boot.loader.efi.canTouchEfiVariables = true;
+      time.timeZone = config.system.timezone;
+      i18n.defaultLocale = "en_US.UTF-8";
 
-    networking.hostName = hostname;
-    system.stateVersion = "23.05";
+      # Packages & Default Packages
+      nixpkgs.config.allowUnfree = true;
+      environment.systemPackages = with pkgs; [
+        git
+        neovim
+        nnn
+        xdg-user-dirs
+      ];
 
-    time.timeZone = config.system.timezone;
-    i18n.defaultLocale = "en_US.UTF-8";
+      # XDG Compliance
+      nix.settings.use-xdg-base-directories = true;
 
-    # Packages & Default Packages
-    nixpkgs.config.allowUnfree = true;
-    environment.systemPackages = with pkgs; [
-      git
-      neovim
-      nnn
-      xdg-user-dirs
-    ];
-
-    # XDG Compliance
-    nix.settings.use-xdg-base-directories = true;
-
-    users = {
-      users = builtins.listToAttrs (map (
-        user: {
-          name = user;
-          value = {
+      users = {
+        users = builtins.listToAttrs (map (
+          user: {
             name = user;
-            isNormalUser = true;
-            extraGroups = [ "network" ];
+            value = {
+              name = user;
+              isNormalUser = true;
+              extraGroups = [ "network" ];
+            };
+          }
+        ) usernameList);
+        groups = {
+          wheel = {
+            members = config.system.users.bigWheels;
           };
-        }
-      ) usernameList);
-      groups = {
-        wheel = {
-          members = config.system.users.bigWheels;
+          network = { };
         };
-        network = { };
       };
-    };
 
-    fonts = {
-      enableDefaultPackages = true;
-      packages = with pkgs; [
-        cascadia-code
-        (nerdfonts.override { fonts = [ "CascadiaCode" ]; })
-        source-han-sans # Pan-CJK font
-      ] ++ config.system.extraFonts;
-    };
-  };
+      fonts = {
+        enableDefaultPackages = true;
+        packages = with pkgs; [
+          cascadia-code
+          (nerdfonts.override { fonts = [ "CascadiaCode" ]; })
+          source-han-sans # Pan-CJK font
+        ] ++ config.system.extraFonts;
+      };
+    }
+  ];
 }