{ pkgs ?

import (builtins.fetchTarball {
  url = "https://github.com/NixOS/nixpkgs/archive/b936b2ddac91901df1daa8393617e74f678236c5.tar.gz";
  # Hash obtained using `nix-prefetch-url --unpack <url>`
  sha256 = "0vrhldxlwqz467mn9dxhpzjgxvw5zjwwa2k3iyly2jhan0h2brac";
}) {} ,



pythonPackages ? pkgs.python37Packages }:

let
  patch =
        { meta.description = "jupyterlab";
          url = "https://github.com/jupyterlab/jupyterlab/commit/3b8d451e6f9a4c609e60cde5fbb3cc84aae79951.patch";
          #sha256 = "0mxf8csah6yx66q37va668wikibcnzclppf73aww7h9i3n7lx2zz";
        };
in

pkgs.mkShell rec {
  buildInputs = [
    ### Base Packages

    (pythonPackages.ipykernel.overrideDerivation (z: { doCheck=false; doInstallCheck = false; checkPhase = ""; } ))
    (pythonPackages.jupyterlab.overrideDerivation (z: { doCheck=false; doInstallCheck = false; checkPhase = ""; } ))



    (pythonPackages.matplotlib.overrideDerivation (z: { doCheck=false; doInstallCheck = false; checkPhase = ""; } ))
    (pythonPackages.numpy.overrideDerivation (z: { doCheck=false; doInstallCheck = false; checkPhase = ""; } ))
    #(pythonPackages.scipy.overrideDerivation (z: { doCheck=false; doInstallCheck = false; checkPhase = ""; } ))

    (pythonPackages.graphviz.overrideDerivation (z: { doCheck=false; doInstallCheck = false; checkPhase = ""; } ))
    (pythonPackages.cypari2.overrideDerivation (z: { doCheck=false; doInstallCheck = false; checkPhase = ""; } ))
  ];


  patches = [
    (fetchpatch patch) ];

  shellHook = ''
    TEMPDIR=$(mktemp -d -p /tmp)
    mkdir -p $TEMPDIR
    cp -r ${pythonPackages.jupyterlab}/share/jupyter/lab/* $TEMPDIR
    chmod -R 755 $TEMPDIR
    echo "$TEMPDIR is the app directory"

    # kernels
    export JUPYTER_PATH="${pkgs.lib.concatMapStringsSep ":" (p: "${p}/share/jupyter/") []}"

# start jupyterlab
jupyter lab --app-dir=$TEMPDIR
  '';

}