Update install.sh

Update link to point to the new nixos wiki

.gitignore

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-git-v1.sh
-setup-git-v1.sh

README.md

@@ -1,44 +1,89 @@
-```
+![banner](banner.png?raw=true)
-  ____ ____  _   _ ____ ____    _____ _   _ _____ __  __ _____ ____
- / ___|  _ \| | | | __ )___ \  |_   _| | | | ____|  \/  | ____/ ___|
-| |  _| |_) | | | |  _ \ __) |   | | | |_| |  _| | |\/| |  _| \___ \
-| |_| |  _ <| |_| | |_) / __/    | | |  _  | |___| |  | | |___ ___) |
- \____|_| \_\\___/|____/_____|   |_| |_| |_|_____|_|  |_|_____|____/
-
-```
-
-## Flat Design themes for Grub
 
 ## Installation:
 
 Usage:  `sudo ./install.sh [OPTIONS...]`
 
-|  Options:              | Description: |
+```
-|:-----------------------|:-------------|
+  -t, --theme     theme variant(s)          [tela|vimix|stylish|whitesur]       (default is tela)
-| -b, --boot             | Install grub theme into `/boot/grub/themes` |
+  -i, --icon      icon variant(s)           [color|white|whitesur]              (default is color)
-| -v, --vimix            | Install Vimix grub theme |
+  -s, --screen    screen display variant(s) [1080p|2k|4k|ultrawide|ultrawide2k] (default is 1080p)
-| -s, --stylish          | Install Stylish grub theme |
+  -r, --remove    Remove theme              [tela|vimix|stylish|whitesur]       (must add theme name option, default is tela)
-| -t, --tela             | Install Tela grub theme |
-| -l, --slaze            | Install Slaze grub theme |
-| -w, --white            | Install using black and white icons |
-| -u, --ultrawide        | Install 21:9 (2560x1080) background image - not available for slaze theme|
-| -C, --custom-background| Use either background.jpg or custom-background.jpg as theme background instead
-| -2, --2k               | Install 2k (2560x1440) background image |
-| -4, --4k               | Install 4k (3840x2160) background image |
-| -r, --remove [THEME]   | Uninstall selected theme |
-| -h, --help             | Show this help |
 
-_If no options are used, a user interface will show up instead_
+  -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)
+
+  -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 --tela --2k`
+
+```sh
+sudo ./install.sh -t tela -s 2k
+```
 
  - Install Tela theme into /boot/grub/themes:
-   - `sudo ./install.sh -b -t`
+
+```sh
+sudo ./install.sh -b -t tela
+```
 
  - Uninstall Tela theme:
-   - `sudo ./install.sh -r -t`
+
+```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;
+  };
+}
+```
 
 ## Issues / tweaks:
 
@@ -53,9 +98,13 @@ _If no options are used, a user interface will show up instead_
 
  - 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, 3840x2160 -> --4k)
+   - 1920x1080 >> 1080p
- - Place your custom background inside the root of the project, and name it either background.jpg or custom-background.jpg
+   - 2560x1080 >> ultrawide
- - Run the installer like normal, but with `--custom-background`, `--[YOUR_RESOLUTION]` and `--[THEME]`
+   - 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
 
 ## Contributing:
@@ -65,20 +114,11 @@ _If no options are used, a user interface will show up instead_
  - 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
 
-## Screenshots:
+## Preview:
+![preview](preview.png?raw=true)
 
-### Vimix grub theme:
+## Documents
 
-![Vimix](screenshots/grub-theme-vimix.jpg?raw=true)
+[Grub2 theme reference](https://wiki.rosalab.ru/en/index.php/Grub2_theme_/_reference)
 
-### Stylish grub theme:
+[Grub2 theme tutorial](https://wiki.rosalab.ru/en/index.php/Grub2_theme_tutorial)
-
-![Stylish](screenshots/grub-theme-stylish.jpg?raw=true)
-
-### Tela grub theme:
-
-![Tela](screenshots/grub-theme-tela.jpg?raw=true)
-
-### Slaze grub theme:
-
-![Slaze](screenshots/grub-theme-slaze.jpg?raw=true)