# Pastebin bZTh16yq
# minimal configuration without hardware just unifi-related
{ config, pkgs, lib, ... }:

{
  nixpkgs.system = "aarch64-linux";

  services.unifi = {
    enable = true;
    jrePackage = pkgs.jre8_headless;
    unifiPackage = pkgs.unifiStable;

    # Use the last known working mongodb package.
    # https://github.com/NixOS/nixpkgs/issues/75133
    mongodbPackage = let
      channelRelease = "nixos-19.09pre190687.3f4144c30a6";  # last known working mongo
      channelName = "unstable";
      url = "https://releases.nixos.org/nixos/${channelName}/${channelRelease}/nixexprs.tar.xz";
      sha256 = "040f16afph387s0a4cc476q3j0z8ik2p5bjyg9w2kkahss1d0pzm";

      pinnedNixpkgsFile = builtins.fetchTarball {
        inherit url sha256;
      };

      pinnedNixpkgs = import pinnedNixpkgsFile { inherit config; };
    in pinnedNixpkgs.mongodb;
  };
}