{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";

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

    # simple mailserver
    snm = {
      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-22.11";
      inputs.nixpkgs-22_11.follows = "nixpkgs";
    };

    nix-on-droid = {
      url = "github:t184256/nix-on-droid/release-22.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };

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

#    simplex-chat = {
#      url = "github:simplex-chat/simplex-chat";
#      inputs.nixpkgs.follows = "nixpkgs";
#    };

    # age for nix to store encrypted passwords conveniently
    agenix = {
      url = "github:ryantm/agenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { home-manager, nixpkgs, agenix, snm, ... }@inputs: {
    nixosConfigurations."thrall" = nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      modules = [
        ({
          nixpkgs = {
            config.allowUnfree = true;
            overlays = with inputs; [ emacs.overlay ];
          };
        })
        snm.nixosModule
        ./modules/security.nix
        ./hosts/thrall
        agenix.nixosModules.age
        home-manager.nixosModules.home-manager
        {
          home-manager.useGlobalPkgs = true;
          home-manager.useUserPackages = true;
          home-manager.users.alex = import ./home/cli.nix;
        }
      ];
    };

    nixosConfigurations."dregil" = import ./hosts/dregil { inherit inputs; };
    homeConfigurations = import ./outputs/homeConfigurations inputs;

    nixOnDroidConfigurations.default = inputs.nix-on-droid.lib.nixOnDroidConfiguration {
      modules = [
        ./hosts/redmi
        { nix.registry.nixpkgs.flake = nixpkgs; }
        { nix.nixPath = [ "nixpkgs=${nixpkgs}" ]; }
      ];
    };
  };
}