{
  description = "kassouni's NixOS configs";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-26.05";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    home-manager.url = "github:nix-community/home-manager/release-26.05";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";
    nixvim.url = "github:nix-community/nixvim/nixos-26.05";
    xmonad-config.url = "path:/home/kassouni/Developer/xmonad-config";
    sidra.url = "github:wimpysworld/sidra";
    slippi.url = "github:lytedev/slippi-nix";
    slippi.inputs.nixpkgs.follows = "nixpkgs";
    slippi.inputs.home-manager.follows = "home-manager";
  };

  outputs =
    {
      self,
      nixpkgs,
      nixpkgs-unstable,
      home-manager,
      nixvim,
      xmonad-config,
      sidra,
      slippi,
      ...
    }@inputs:
    let
      systems = [
        "x86_64-linux"
        "aarch64-linux"
        "x86_64-darwin"
        "aarch64-darwin"
      ];
      forAllSystems = nixpkgs.lib.genAttrs systems;
    in
    {

      nixosConfigurations = {
        hierophant = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            pkgs-unstable = import nixpkgs-unstable {
              system = "x86_64-linux";
              config.allowUnfree = true;
            };
          };
          modules = [
            ./machines/hierophant/configuration.nix
            ./machines/hierophant/hardware-configuration.nix
            xmonad-config.nixosModules.default
            slippi.nixosModules.default
            home-manager.nixosModules.home-manager
            {
              home-manager.useGlobalPkgs = true;
              home-manager.useUserPackages = true;
              home-manager.extraSpecialArgs = {
                pkgs-unstable = import nixpkgs-unstable {
                  system = "x86_64-linux";
                  config.allowUnfree = true;
                };
              };
              home-manager.users.kassouni = { pkgs, ... }: {
                imports = [
                  ./users/kassouni/home.nix
                  nixvim.homeModules.nixvim
                  xmonad-config.homeManagerModules.default
                  slippi.homeManagerModules.default
                ];
                home.packages = [ sidra.packages.${pkgs.system}.default ];
              };
            }
          ];
        };
      };

      devShells = forAllSystems (system: {
        default =
          let
            pkgs = nixpkgs.legacyPackages.${system};
          in
          pkgs.mkShell {
            buildInputs = [ ];
          };
      });

      formatter = forAllSystems (system: nixpkgs.legacyPackages.${system}.nixfmt-tree);
    };
}