pyEDFlib doesn't play nice at setup runtime

[j9ac9k]

pyedflib requires numpy at setup_time

#!/usr/bin/env python
#-*- coding: utf-8 -*-

import os
import sys
import subprocess
from functools import partial

from setuptools import setup, Extension
from numpy import get_include as get_numpy_include
from distutils.sysconfig import get_python_inc

...

this can present a problem when bundling pyEDFlib as a dependency; as even if numpy is installed before pyEDFlib, it's not necessarily going to be available from the interpreter at runtime.

pygdal recently had a similar issue, but they appear to have resolved it, can reference to their setup.py file should be used

https://github.com/nextgis/pygdal/blob/master/setup.py

There is further discussion on this issue here: pypa/pipenv#2274

As pipenv (or pip for that matter) do let me specify install order or let me specify that one package is dependent on another one at setup time, the fix will likely have to be upstream at pyEDFlib.

[j9ac9k]

simpletraj appears to have resolved this issue in their setup.py:

https://github.com/arose/simpletraj/blob/master/setup.py

[j9ac9k]

I added cython as a dependency; and everything worked out. I assume that the pyedflib folks have not uploaded a wheel for python 3.7, so when I attempted to pip install, it needed to build it from the source distribution. It would fail doing so as cython was nowhere on my system (and that's a dependency to build pyedflib).

Will sleep on whether I want to add cython as a dependency for timeview.