update

Fix NixOS build failure due to missing files

.gitignore

@@ -1,2 +0,0 @@
-git-v1.sh
-setup-git-v1.sh

README.md

@@ -1,70 +1,115 @@
-```
-  ____ ____  _   _ ____ ____    _____ _   _ _____ __  __ _____ ____
- / ___|  _ \| | | | __ )___ \  |_   _| | | | ____|  \/  | ____/ ___|
-| |  _| |_) | | | |  _ \ __) |   | | | |_| |  _| | |\/| |  _| \___ \
-| |_| |  _ <| |_| | |_) / __/    | | |  _  | |___| |  | | |___ ___) |
- \____|_| \_\\___/|____/_____|   |_| |_| |_|_____|_|  |_|_____|____/
-
-```
-
-## Flat Design themes for Grub2.
-
-## Install
+![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)
 
-_if no option used the terminal user interface will be show up_
+  -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)
 
-|  OPTIONS:          | description |
-|:-------------------|:-------------|
-| -b, --boot         | Install grub theme into /boot/grub/themes |
-| -v, --vimix        | Vimix grub theme |
-| -s, --stylish      | Stylish grub theme |
-| -t, --tela         | Tela grub theme |
-| -l, --slaze        | Slaze grub theme |
-| -w, --white        | Install white color icon version |
-| -u, --ultrawide    | Install 2560x1080 background image - not available for slaze theme|
-| -2, --2k           | Install 2k(2560x1440) background image |
-| -4, --4k           | Install 4k(3840x2160) background image |
-| -r, --remove       | Remove theme (must add theme name option) |
-| -h, --help         | Show this help |
+  -h, --help                  show this help
+```
+*If no options are used, a user interface *`dialog`* will show up instead*
 
-For example:
+### Examples:
+ - Install Tela theme on 2k display device:
+```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:
+```sh
+sudo ./install.sh -b -t tela
+```
+ - Uninstall Tela theme:
+```sh
+sudo ./install.sh -r -t tela
+```
 
-1. Install Tela theme on 2k display device
+## 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
+  };
+}
+```
 
-    `sudo ./install.sh -t -2`
-    or
-    `sudo ./install.sh --tela --2k`
+## 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
 
-2. Install Tela theme into /boot/grub/themes
+### 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
+ - 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
 
-    `sudo ./install.sh -b -t`
+## Contributing:
+ - If you made changes to icons, or added a new one:
+   - Delete the existing icon, if there is one
+   - Run `cd assets; ./render-all.sh`
+ - Create a pull request from your branch or fork
+ - If any issues occur, report then to the [issue](https://github.com/vinceliuice/grub2-themes/issues) page
 
-3. Remove Tela theme
+## Preview:
+![preview](preview.png?raw=true)
 
-    `sudo ./install.sh -r -t`
+## Documents
 
-## Display resolution issues
+[Grub2 theme reference](https://wiki.rosalab.ru/en/index.php/Grub2_theme_/_reference)  
 
-#### Set the right resolution of your display
-
-On the grub screen, `press c` to get the commandline, and enter `vbeinfo` or `videoinfo` on EFI boot to check what resolutions you can use, then edit `/etc/default/grub` , add your resolution `GRUB_GFXMODE=****x****x32` into it, last you can run `grub-mkconfig -o /boot/grub/grub.cfg` to update your grub.cfg.
-
-## Screenshots
-
-### Vimix grub theme
-
-![vimix grub theme](screenshots/grub-theme-vimix.jpg?raw=true)
-
-### Stylish grub theme
-
-![Stylish grub theme](screenshots/grub-theme-stylish.jpg?raw=true)
-
-### Tela grub theme
-
-![Tela grub theme](screenshots/grub-theme-tela.jpg?raw=true)
-
-### Slaze grub theme
-
-![Slaze grub theme](screenshots/grub-theme-slaze.jpg?raw=true)
+[Grub2 theme tutorial](https://wiki.rosalab.ru/en/index.php/Grub2_theme_tutorial)