{
  config,
  pkgs,
  lib,
  ...
}:
with lib;
let
  cfg = config.aviallon.services.jupyterhub;
in
{
  options.aviallon.services.jupyterhub = {
    enable = mkEnableOption "Jupyterhub server with Python 3 kernel";
  };

  config = mkIf cfg.enable {
    services.jupyterhub = {
      enable = true;
      kernels.python3 =
        let
          env = (
            pkgs.python3.withPackages (
              pythonPackages: with pythonPackages; [
                ipykernel
                pandas
                scikit-learn
                pyspark
                matplotlib
                numpy
                pip
              ]
            )
          );
        in
        {
          displayName = "Python 3 for machine learning";
          argv = [
            "${env.interpreter}"
            "-m"
            "ipykernel_launcher"
            "-f"
            "{connection_file}"
          ];
          language = "python";
          logo32 = "${env}/${env.sitePackages}/ipykernel/resources/logo-32x32.png";
          logo64 = "${env}/${env.sitePackages}/ipykernel/resources/logo-64x64.png";
        };
    };

    services.nginx = {
      enable = true;
    };
    services.nginx.virtualHosts = {
      "jupyterhub.localhost" = {
        listen = [
          {
            addr = "0.0.0.0";
            port = 80;
          }
        ];
        locations."/" = {
          proxyPass = "http://localhost:${toString config.services.jupyterhub.port}";
          proxyWebsockets = true;
        };
      };
    };
  };
}