update

Fix NixOS build failure due to missing files

README.md

@@ -1,47 +1,102 @@
 ![banner](banner.png?raw=true)
 
 ## Installation:
-
 Usage:  `sudo ./install.sh [OPTIONS...]`
+```
+  -t, --theme                 theme variant(s)          [tela|vimix|stylish|whitesur]       (default is tela)
+  -i, --icon                  icon variant(s)           [color|white|whitesur]              (default is color)
+  -s, --screen                screen display variant(s) [1080p|2k|4k|ultrawide|ultrawide2k] (default is 1080p)
+  -c, --custom-resolution     set custom resolution     (e.g., 1600x900)                    (disabled in default)
+  -r, --remove                remove theme              [tela|vimix|stylish|whitesur]       (must add theme name option, default is tela)
 
-|  Options:              | Description: |
-|:-----------------------|:-------------|
-| -b, --boot             | Install grub theme into `/boot/grub/themes` |
-| -t, --theme            | theme variant(s) [tela/vimix/stylish/slaze/whitesur] (default is tela)"
-| -i, --icon             | icon variant(s) [color/white/whitesur] (default is color)"
-| -s, --screen           | screen resolution variant(s) [1080p/2k/4k/ultrawide/ultrawide2k] (default is 1080p)"
-| -r, --remove [THEME]   | Uninstall selected theme |
-| -h, --help             | Show this help |
+  -b, --boot                  install theme into '/boot/grub' or '/boot/grub2'
+  -g, --generate              do not install but generate theme into chosen directory       (must add your directory)
 
-_If no options are used, a user interface `dialog` will show up instead_
+  -h, --help                  show this help
+```
+*If no options are used, a user interface *`dialog`* will show up instead*
 
 ### Examples:
  - Install Tela theme on 2k display device:
-   - `sudo ./install.sh -t tela -s 2k`
-
+```sh
+sudo ./install.sh -t tela -s 2k
+```
+ - Install Tela theme with custom resolution:
+```sh
+sudo ./install.sh -t tela -c 1600x900
+```
  - Install Tela theme into /boot/grub/themes:
-   - `sudo ./install.sh -b -t tela`
-
+```sh
+sudo ./install.sh -b -t tela
+```
  - Uninstall Tela theme:
-   - `sudo ./install.sh -r -t tela`
+```sh
+sudo ./install.sh -r -t tela
+```
+
+## Installation with NixOS:
+To use this theme with NixOS you will have to enable [flakes](https://wiki.nixos.org/wiki/flakes). Before you do this, please inform yourself if you really want to, because flakes are still an unstable feature.
+First you will have to add grub2 to your `flake.nix` file as a new input.
+```nix
+# flake.nix
+{
+  description = "NixOS configuration";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    # Add grub2 themes to your inputs ...
+    grub2-themes = {
+      url = "github:vinceliuice/grub2-themes";
+    };
+  };
+  outputs = inputs@{ nixpkgs,  grub2-themes, ... }: {
+    nixosConfigurations = {
+      my_host = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        specialArgs = { inherit inputs; };
+        # ... and then to your modules
+        modules = [
+          ./configuration.nix
+          grub2-themes.nixosModules.default
+        ];
+      };
+    };
+  };
+}
+```
+After that, you can configure the theme as shown below. In this example it is inside the `configuration.nix` file but it can be any file you choose.
+```nix
+# configuration.nix
+{ inputs, config, pkgs, lib, ... }:
+{
+  boot.loader.grub = { ... };
+  boot.loader.grub2-theme = {
+    enable = true;
+    theme = "stylish";
+    footer = true;
+    customResolution = "1600x900";  # Optional: Set a custom resolution
+  };
+}
+```
 
 ## Issues / tweaks:
-
 ### Correcting display resolution:
-
  - On the grub screen, press `c` to enter the command line
  - Enter `vbeinfo` or `videoinfo` to check available resolutions
  - Open `/etc/default/grub`, and edit `GRUB_GFXMODE=[height]x[width]x32` to match your resolution
  - Finally, run `grub-mkconfig -o /boot/grub/grub.cfg` to update your grub config
 
 ### Setting a custom background:
-
  - Make sure you have `imagemagick` installed, or at least something that provides `convert`
  - Find the resolution of your display, and make sure your background matches the resolution
-   - (1920x1080 -> --1080p, 2560x1080 -> --ultrawide, 2560x1440 -> --2k, 3440x1440 -> --ultrawide2k, 3840x2160 -> --4k)
+   - 1920x1080 >> 1080p
+   - 2560x1080 >> ultrawide
+   - 2560x1440 >> 2k
+   - 3440x1440 >> ultrawide2k
+   - 3840x2160 >> 4k
  - Place your custom background inside the root of the project, and name it `background.jpg`
  - Run the installer like normal, but with -s `[YOUR_RESOLUTION]` and -t `[THEME]` and -i `[ICON]`
    - Make sure to replace `[YOUR_RESOLUTION]` with your resolution and `[THEME]` with the theme
+ - Alternatively, use the `-c` option to set a custom resolution
 
 ## Contributing:
  - If you made changes to icons, or added a new one:
@@ -55,7 +110,6 @@ _If no options are used, a user interface `dialog` will show up instead_
 
 ## Documents
 
-[Grub2 theme reference](http://wiki.rosalab.ru/en/index.php/Grub2_theme_/_reference)
-
-[Grub2 theme tutorial](http://wiki.rosalab.ru/en/index.php/Grub2_theme_tutorial)
+[Grub2 theme reference](https://wiki.rosalab.ru/en/index.php/Grub2_theme_/_reference)  
 
+[Grub2 theme tutorial](https://wiki.rosalab.ru/en/index.php/Grub2_theme_tutorial)