docs: add nix page

docs/ags/installation.md

@@ -4,7 +4,14 @@
 
 maintainer: [@Aylur](https://github.com/Aylur)
 
-Read more about it on the [nix page](../getting-started/nix.md)
+Read more about it on the [nix page](../getting-started/nix#ags)
+
+You can try without installing.
+
+<!--TODO: remove v2 after merge-->
+```sh
+nix run github:aylur/ags/v2 -- --help
+```
 
 ## Bulding AGS from source
 
@@ -38,6 +45,7 @@ sudo zypper install go npm gjs
 
 3. Clone the repo and Install
 
+<!--TODO: remove v2 after merge-->
 ```sh
 git clone https://github.com/aylur/ags.git
 cd ags

docs/getting-started/nix.md

@@ -1 +1,102 @@
 # Nix
+
+## Astal
+
+Using Astal on Nix will require you to package your project.
+
+:::code-group
+
+```nix [typescript.nix]
+# Not documented yet
+```
+
+```nix [lua.nix]
+# Not documented yet
+```
+
+```nix [python.nix]
+# Not documented yet
+```
+
+```nix [vala.nix]
+# Not documented yet
+```
+
+:::
+
+## AGS
+
+The recommended way to use AGS on NixOS is through the home-manager module.
+
+Example content of a `flake.nix` file that contains your `homeConfigurations`.
+
+<!--TODO: remove v2 after merge-->
+
+:::code-group
+
+```nix [flake.nix]
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    # add ags https://github.com/Aylur/ags/pull/504
+    ags.url = "github:aylur/ags/v2";
+  };
+
+  outputs = { home-manager, nixpkgs, ... }@inputs:
+  let
+    system = "x86_64-linux";
+  in
+  {
+    homeConfigurations."${username}" = home-manager.lib.homeManagerConfiguration {
+      pkgs = import nixpkgs { inherit system; };
+
+      # pass inputs as specialArgs
+      extraSpecialArgs = { inherit inputs; };
+
+      # import your home.nix
+      modules = [ ./home-manager/home.nix ];
+    };
+  };
+}
+```
+
+:::
+
+Example content of `home.nix` file
+
+:::code-group
+
+```nix [home.nix]
+{ inputs, pkgs, ... }:
+{
+  # add the home manager module
+  imports = [ inputs.ags.homeManagerModules.default ];
+
+  programs.ags = {
+    enable = true;
+    configDir = ../ags;
+
+    # additional packages to add to gjs's runtime
+    extraPackages = with pkgs; [
+      inputs.ags.packages.${pkgs.system}.battery
+      fzf
+    ];
+  };
+}
+```
+
+:::
+
+AGS by default only includes the core `libastal` library.
+If you want to include any other [library](../libraries/references) you have to add them to `extraPackages`.
+You can also add binaries which will be added to `$PATH`.
+
+:::warning
+The `configDir` option symlinks the given path to `~/.config/ags`.
+If you already have your source code there leave it as `null`.
+:::