{
  description = "nixconfig";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    nixpkgs-stable.url = "github:NixOS/nixpkgs/nixos-26.05";

    # Hardware and gaming
    nixos-hardware.url = "github:NixOS/nixos-hardware/master";

    impermanence = {
      url = "github:nix-community/impermanence";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nixos-mailserver = {
      # url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-26.05";
      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/main";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    microvm = {
      url = "github:microvm-nix/microvm.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    sls-steam = {
      url = "github:AceSLS/SLSsteam";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    openmw-nix = {
      url = "git+https://codeberg.org/adikro/openmw-nix.git";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # System Utilities
    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    home-manager = {
      url = "github:nix-community/home-manager/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    disko = {
      url = "github:nix-community/disko/latest";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # UI and apps
    niri = {
      url = "github:sodiboo/niri-flake";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    waybar = {
      url = "github:Alexays/Waybar";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    yazi = {
      url = "github:sxyazi/yazi";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    satty = {
      url = "github:gabm/Satty";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # Other
    omnisearch = {
      url = "git+https://git.bwaaa.monster/omnisearch?shallow=0&rev=24f9909badd4e7aa1f3aeef717b93e9b71c20a4e";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    otter-launcher = {
      url = "github:kuokuo123/otter-launcher";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    fsel = {
      url = "github:Mjoyufull/fsel";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nixvim = {
      url = "github:nix-community/nixvim";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nvf = {
      url = "github:NotAShelf/nvf";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    {
      self,
      nixpkgs,
      nixpkgs-stable,
      ...
    }@inputs:
    let
      unstablePkgs = import nixpkgs { };
      stablePkgs = import nixpkgs-stable { };
      mkHost =
        {
          hostname,
          user ? "adam",
          isStable ? false,
          path ? ./hosts/${hostname}/configuration.nix,
        }:
        nixpkgs.lib.nixosSystem {
          specialArgs = {
            inherit inputs;
            username = user;
            pkgs-unstable = unstablePkgs;
            pkgs-stable = stablePkgs;
            masterDomain = "bibus.top";
          };
          modules = [
            path
            { networking.hostName = hostname; }
          ];
        };
    in
    {
      nixosConfigurations = {
        szpont = mkHost {
          hostname = "szpont";
          path = ./hosts/desktop/configuration.nix;
        };
        thinkpad = mkHost { hostname = "thinkpad"; };
        pendrive = mkHost {
          hostname = "pendrive";
          user = "user";
        };
        bibus-lab = mkHost {
          hostname = "bibus-lab";
          user = "opc";
          isStable = true;
        };
      };
    };
}