[PATCH] run-tests: forward Python USER_BASE from site (issue5425)

[Yuya Nishihara]

On Thu, 10 Nov 2016 16:11:27 -0500, Augie Fackler wrote:
> # HG changeset patch
> # User Augie Fackler <augie at google.com>
> # Date 1478812044 18000
> #      Thu Nov 10 16:07:24 2016 -0500
> # Node ID 4a82a34d2694953ad58e5565a318d6909978d4ca
> # Parent  61c9f8b3663cc6144446bbe1b8d8fc5088f081be
> run-tests: forward Python USER_BASE from site (issue5425)
> 
> We do this so that any linters installed via pip install --user don't
> break. See https://docs.python.org/2/library/site.html#site.USER_BASE
> for a description of what this nonsense is all about.
> 
> An alternative would be to not set HOME, but that'll cause other
> problems (see issue2707), or to forward every single path entry from
> sys.path in PYTHONPATH (which seems sketchy in its own way).
> 
> diff --git a/tests/run-tests.py b/tests/run-tests.py
> --- a/tests/run-tests.py
> +++ b/tests/run-tests.py
> @@ -58,6 +58,7 @@ import signal
>  import socket
>  import subprocess
>  import sys
> +import sysconfig

Seems fine, but the sysconfig module doesn't exist in Python 2.6. I think
simple try-except would be okay.