gistfile1.txt

{ pkgs, lib, pythonPackages }:
with pythonPackages;

buildPythonPackage rec {
  pname = "python_speech_features";
  version = "0.6";
  src = fetchPypi {
    inherit pname version;
    sha256 = "049bp40mz9j0zgsxs82iihwpr5pzsxlv6b0nqffr5g34cisbzbm0";
  };
}

gistfile2.txt

  services.jupyterhub = {
    enable = true;
    kernels = {
      python3 = let
        lalalala = pkgs.callPackage ./python_speech_features.nix { };
        env = (pkgs.python3.withPackages (pythonPackages:
          with pythonPackages; [
            ipykernel
            pandas
            scikitlearn
            librosa
            matplotlib
            numpy
            tensorflowWithCuda
            pip
            lalalala
            pylint
          ]));
      in {
        displayName = "Python 3 for machine learning";
        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";
      };
    };
  };