# ~/nix-expressions/nixpkgs has a clone from nixpkgs github
{ pkgs ? (import /home/lfish/nix-expressions/nixpkgs {} ) }:

with pkgs;
let
  wrapped-opencv = python-packages: with python-packages;
    toPythonModule (opencv3.override {
      enablePython = true;
      pythonPackages = python-packages;
    });
  my-python-packages = python-packages: with python-packages; [
    requests
    imutils
    numpy
    scipy
    matplotlib
    pyserial
    flask
    (wrapped-opencv python-packages)
    virtualenvwrapper
  ];
  python-with-my-packages = python35.withPackages my-python-packages;
in stdenv.mkDerivation rec {
  name = "env";

  # Mandatory boilerplate for buildable env
  env = buildEnv { name = name; paths = buildInputs; };
  builder = builtins.toFile "builder.sh" ''
    source $stdenv/setup; ln -s $env $out
  '';

  # Customizable development requirements
  buildInputs = [
    python-with-my-packages
    #my emacs configuration
    (import /home/lfish/.emacs.d/emacs.nix {})
  ];
}