Bug#850763: Option for build directory is needed

["Iain R. Learmonth" <irl@debian.org>]

On Tue, 10 Jan 2017 01:00:36 +0100 Alf Gaida <agaida@siduction.org> wrote:
> a option for a build directory is needed - right now live-wrapper try to build in /tmp/$foo and fail
> because standard options for /tmp are Options=mode=1777,strictatime,nosuid,nodev
> 
> One should not be forced to touch these settings because of security concerns.

Just going to bed now, but will look in the next few days.

Temporary directories are created using Python's tempfile functions:

"The default directory is chosen from a platform-dependent list, but the
user of the application can control the directory location by setting the
TMPDIR, TEMP or TMP environment variables."

Can you try setting those environment variables and let me know if it works?
If it does then this is just a docfix.

Thanks,
Iain.