shell.nix for running jupyter lab

default.nix

{
  pkgs ? import <nixpkgs> { },
}:
with pkgs;
python3.buildEnv.override {
  ignoreCollisions = true;
  extraLibs = with python3Packages; [
    pip
    ipykernel
    jupyterlab
    matplotlib
    numpy
    pandas
    seaborn
    opencv4
    imutils
  ];
}

shell.nix

{
  pkgs ? import <nixpkgs> { },
  mkShell ? pkgs.mkShell,
}:
with pkgs;
let
  drv = import ./default.nix { inherit pkgs; };
in
mkShell rec {
  buildInputs = with pkgs; [
    stdenv
    drv
  ];

  shellHook = ''
    echo Envrionment Path (for PyCharm, etc.): ${drv}
    exec jupyter lab
  '';
}