let pkgs = import <nixpkgs> { };
in {
  machine = {
    deployment.targetEnv = "libvirtd";
    deployment.libvirtd.imageDir = "/var/lib/libvirt/images";

    services.jupyterhub = {
      enable = true;
      port = 80;
      kernels = import ./kernels.nix { inherit pkgs; };
    };

    networking.firewall.allowedTCPPorts = [ 80 ];

    security.pam.services.login.setLoginUid = false;

    users.users.costrouc = {
      isNormalUser = true;
      home = "/home/costrouc";
      description = "Chris Ostrouchov";
      extraGroups = [ "wheel"];
      hashedPassword = "$6$og2KAu0wj$ce4zFxN5bd0fz1q/jTDO6o.wcxtm6lhXOZ.Dno34W5Rih1IJVjyiRJiIIqVxNF309XK0cP.F0eNu7ttW5qF8N.";
    };
  };
}

{ pkgs }:

{
  python27Kernel = (
      let env = (pkgs.python2.withPackages(p: with p; [
            ipykernel numpy scipy
          ])).override (args: { ignoreCollisions = true; });
      in {
        displayName = "Python 2.7";
        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";
      });

  python37Kernel = (
    let env = pkgs.python37.withPackages(p: with p; [
          ipykernel numpy scipy
        ]);
    in {
      displayName = "Python 3.7";
      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";
    });

  python38Kernel = (
    let env = pkgs.python38.withPackages(p: with p; [
          ipykernel numpy scipy numba nixpkgs
        ]);
    in {
      displayName = "Python 3.8";
      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";
    });

  cKernel = (
    let env = pkgs.python3.withPackages(p: with p; [
          jupyter-c-kernel
        ]);
    in {
      displayName = "C";
      argv = ["${env.interpreter}" "-m" "jupyter_c_kernel" "-f" "{connection_file}"];
      language = "c";
    });

  rustKernel = {
    displayName = "Rust";
    argv = ["${pkgs.evcxr}/bin/evcxr_jupyter" "--control_file" "{connection_file}"];
    language = "Rust";
  };

  rKernel = (
    let env = pkgs.rWrapper.override { packages = with pkgs.rPackages; [
        IRkernel ggplot2
    ];};
    in {
       displayName = "R";
       argv = ["${env}/bin/R" "--slave" "-e" "IRkernel::main()" "--args" "{connection_file}"];
       language = "R";
    });

  ansibleKernel = (
    let env = (pkgs.python3.withPackages(p: with p; [
          ansible-kernel ansible
        ])).override (args: { ignoreCollisions = true; });
    in {
      displayName = "Ansible";
      argv = ["${env.interpreter}" "-m" "ansible_kernel" "-f" "{connection_file}"];
      language = "ansible";
    });

  bashKernel = (
    let env = pkgs.python3.withPackages(p: with p; [
          bash_kernel
        ]);
    in {
      displayName = "Bash";
      argv = ["${env.interpreter}" "-m" "bash_kernel" "-f" "{connection_file}"];
      language = "Bash";
    });
}