{ pkgs ? import <nixpkgs> {} }:

let 
  pythonPackages = pkgs.python3.withPackages (p: with p; [
    ipython
    jupyterlab
    scipy
    sympy
    bokeh
    bkcharts
  ]);
in

pkgs.mkShell {

  buildInputs = [
    pythonPackages

    # keep this line if you use bash
    pkgs.bashInteractive
  ];
}