{ pkgs ? import <nixpkgs> { } }:
let

  #terraform = terraform-current;
  terraform = pkgs.terraform;
  terraform-current = pkgs.terraform.overrideAttrs (old: rec {
    version = "0.11.10";
    name = "terraform-${version}";
    src = pkgs.fetchFromGitHub {
      owner = "hashicorp";
      repo = "terraform";
      rev = "v${version}";
      sha256 = "08mapla89g106bvqr41zfd7l4ki55by6207qlxq9caiha54nx4nb";
    };
  });

in
pkgs.mkShell {

  # needed pkgs
  # -----------
  buildInputs = with pkgs;
    [

      (pkgs.writeShellScriptBin "terraform" ''
        export TF_VAR_hcloud_api_token=`${pkgs.pass}/bin/pass development/hetzner.com/api-token`
        ${terraform}/bin/terraform "$@"
      '')
    ];

  # run this on start
  # -----------------
  shellHook = ''
    HISTFILE=${toString ./.}/.history
  '';
}