On UNIX, the timezone modules conversions can be reset by using
`time.tzset()`. On windows this is not available and the timezone (TZ)
environment variable must be set before the first import of time module.
If not, all datetime gotten in python without specifying UTC (such as
datetime.datetime.now) could be wrong.
This was fixed with 4a77c6a0 in 2013, but has come back since 389c2ba97b
imported pkg_resources (which do a `time` module import) before that.
closes#14926
opw-693764
by auto-extending addons path with odoo.addons.__path__.
This patch also introduce
* an explicit declaration of odoo.addons as a namespace package
This is necessary because the standard way of declaring namespace
packages in setup.py does not work as long as odoo/__init__.py
contains code.
* a more reliable way to find odoo root path.
The use of an entry point was considered in order to provide
an `odoo` command in the path for the packages users, but the
generated entry point will first check that all the things in
install_requires were provided in a not bright way: it'll check
that it matches a distribution name. This does not work because
python-chart does not have the distrubtion name "pychart" which
is provided by the python-pychart package in debian jessie. Same
for suds-jurko which is provided by python-suds in debian stretch
but does not have the distribution name "suds".
Also, adapted the packages tests to these cli changes.
Nicolas Lempereur