let
  nixpkgs-tar = builtins.fetchTarball (import ./nixpkgs.nix);
  nixpkgs = import "${nixpkgs-tar}" {};
  nixos = import "${nixpkgs-tar}/nixos";
  # TODO(bsima): buildNixOS should be split into multiple functions that each
  # return one thing, instead of a single function that returns multiple things
  buildNixOS = opts: let full = (nixos opts); in {
    system = full.system;
    vm = full.vm;
  };

in {
  com.simatime = import ./com/simatime.nix { inherit buildNixOS; };
  com.influencedbybooks = buildNixOS  {
    system = "x86_64-linux";
    configuration = {
      imports = [
        ./com/influencedbybooks/service.nix
        # common infra
        ./com/simatime/users.nix
        ./com/simatime/packages.nix
      ];
      nixpkgs.config.allowUnfree = true;
      services.openssh = {
        enable = true;
        passwordAuthentication = false;
      };
      security.sudo.wheelNeedsPassword = true;
      boot.cleanTmpDir = true;
    };
}