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
  buildOS = import ./Com/Simatime/buildOS.nix nixos;
  buildGhc = import ./Com/Simatime/buildGhc.nix nixpkgs;
  buildGhcjs = import ./Com/Simatime/buildGhcjs.nix nixpkgs;
  nixos-mailserver = let ver = "v2.3.0"; in builtins.fetchTarball {
    url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/${ver}/nixos-mailserver-${ver}.tar.gz";
    sha256 = "0lpz08qviccvpfws2nm83n7m2r8add2wvfg9bljx9yxx8107r919";
  };
in rec {
  # Cloud infrastructure, always online. Mostly for messaging-related
  # stuff.
  #
  Com.Simatime.Cloud = buildOS {
    enableVpn = true;
    ipAddress = "159.89.128.69";
    vpnRsaPrivateKeyFile = "/etc/tinc/rsa_key.priv";
    vpnEd25519PrivateKeyFile = "/etc/tinc/ed25519_key.priv";
    configuration = {
      imports = [
        ./Com/Simatime/packages.nix
        ./Com/Simatime/users.nix
        ./Com/Simatime/Cloud/chat.nix
        ./Com/Simatime/Cloud/git.nix
        ./Com/Simatime/Cloud/hardware.nix
        ./Com/Simatime/Cloud/mail.nix
        ./Com/Simatime/Cloud/networking.nix
        ./Com/Simatime/Cloud/web.nix
        ./Com/Simatime/Cloud/znc.nix
        nixos-mailserver
      ];
      networking.hostName = "simatime";
      networking.domain = "simatime.com";
    };
  };
  # Dev machine for work and building stuff.
  #
  Com.Simatime.Dev = buildOS {
    enableVpn = true;
    ipAddress = "69.181.254.154";
    configuration = {
      imports = [
        ./Com/Simatime/packages.nix
        ./Com/Simatime/users.nix
        ./Com/Simatime/Dev/configuration.nix
        ./Com/Simatime/Dev/hardware.nix
      ];
      networking.hostName = "lithium";
      networking.domain = "dev.simatime.com";
    };
  };
  # Serval is the production server for apps
  #
  Com.Simatime.Serval = buildOS {
    deps = { que-server = Run.Que.Server; };
    configuration = {
      imports = [
        ./Com/Simatime/packages.nix
        ./Com/Simatime/Serval/hardware.nix
        ./Com/Simatime/Serval/networking.nix
        ./Com/Simatime/Serval/configuration.nix
        ./Run/Que/service.nix
      ];
      networking.hostName = "serval";
      networking.domain = "serval.simatime.com";
      boot.enableContainers = true;
    };
  };
  Com.InfluencedByBooks.Server = buildGhc {
    name = "Com.InfluencedByBooks.Server";
    nick = "ibb";
    deps = [
      "clay"
      "miso"
      "protolude"
      "servant"
      "text"
      "MonadRandom"
      "acid-state"
      "blaze-html"
      "blaze-markup"
      "bytestring"
      "ixset"
      "random"
      "safecopy"
      "scotty"
      "servant-server"
      "text"
    ];
  };
  Com.InfluencedByBooks.Client = buildGhcjs {
    name = "Com.InfluencedByBooks.Client";
    nick = "ibb";
    deps = [
      "clay"
      "miso"
      "protolude"
      "servant"
      "text"
      "aeson"
      "containers"
      "ghcjs-base"
    ];
  };
  Com.MusicMeetsComics = {
    Server = buildGhc {
      name = "Com.MusicMeetsComics.Server";
      nick = "mmc";
      deps = [
        "aeson"
        "clay"
        "containers"
        "miso"
        "protolude"
        "servant"
        "split"
        "string-quote"
        "text"
        "dhall"
        "ekg"
        "fast-logger"
        "http-types"
        "katip"
        "lucid"
        "monad-logger"
        "monad-metrics"
        "mtl"
        "network-uri"
        "safe"
        "servant-lucid"
        "servant-server"
        "split"
        "wai"
        "wai-app-static"
        "wai-extra"
        "wai-middleware-metrics"
        "warp"
      ];
    };
    Client = buildGhcjs {
      name = "Com.MusicMeetsComics.Client";
      nick = "mmc";
      deps = [
        "aeson"
        "clay"
        "containers"
        "miso"
        "protolude"
        "servant"
        "split"
        "string-quote"
        "text"
        "ghcjs-base"
      ];
    };
  };
  Run.Que.Server = buildGhc {
    name = "Run.Que.Server";
    nick = "que-server";
    deps = [
      "async"
      "protolude"
      "scotty"
      "stm"
      "unagi-chan"
      "unordered-containers"
    ];
  };
  Run.Que.Website = buildGhc {
    name = "Run.Que.Website";
    nick = "que-website";
    deps = [
      "async"
      "process"
      "protolude"
      "req"
    ];
  };
}