From 88ccd47c88dc39b8d746afae89dea31d46558a68 Mon Sep 17 00:00:00 2001
From: Spyros Trigazis <strigazi@gmail.com>
Date: Sun, 24 Jul 2016 22:13:57 +0200
Subject: [PATCH] Keep old behavior of setuptools for editable installs

In the 25.0.0 release [1] of setuptools during any install
operation the package in not overwritten. If a package is
installed from another requirement via pip and then it is
installed again from git, it is not updated causing
check_libs_from_git to fail.

[1] https://setuptools.readthedocs.io/en/latest/history.html#v25-0-0

Change-Id: Ibaa1d4157816ea649f4452756fbde25951347001
Closes-Bug: #1605998
---
 inc/python | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/inc/python b/inc/python
index e013dfab36..9de2831537 100644
--- a/inc/python
+++ b/inc/python
@@ -148,11 +148,15 @@ function pip_install {
     fi
 
     $xtrace
+    # adding SETUPTOOLS_SYS_PATH_TECHNIQUE is a workaround to keep
+    # the same behaviour of setuptools before version 25.0.0.
+    # related issue: https://github.com/pypa/pip/issues/3874
     $sudo_pip \
         http_proxy="${http_proxy:-}" \
         https_proxy="${https_proxy:-}" \
         no_proxy="${no_proxy:-}" \
         PIP_FIND_LINKS=$PIP_FIND_LINKS \
+        SETUPTOOLS_SYS_PATH_TECHNIQUE=rewrite \
         $cmd_pip $upgrade \
         $@
     result=$?