From c457767edf814f92e1da8cb9d08fa52404ea074c Mon Sep 17 00:00:00 2001
From: Jeroen Bakker <j.bakker@atmind.nl>
Date: Wed, 29 May 2019 10:28:34 +0200
Subject: [PATCH] Use Python module to run Pip

setup.py used systemcalls for package management pip. This call is
platform dependent as on ubuntu distros this needs to be pip3. On these
platforms pip points to the python2 version.

By direct calling the pip module from within the running python process
we know for sure we are triggering the correct one.

Differential revision: https://developer.blender.org/D4952/

Reviewed by: sybren
---
 setup.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/setup.py b/setup.py
index 40f0023..ffef5ea 100755
--- a/setup.py
+++ b/setup.py
@@ -23,6 +23,7 @@ import shutil
 import subprocess
 import re
 import pathlib
+import pip
 import zipfile
 
 from distutils import log
@@ -121,9 +122,8 @@ class BuildWheels(Command):
 
     def download_wheel(self, requirement):
         """Downloads a wheel from PyPI and saves it in self.wheels_path."""
-
-        subprocess.check_call([
-            'pip', 'download',
+        pip.main([
+            'download',
             '--no-deps',
             '--dest', str(self.wheels_path),
             requirement[0]