[cubicweb-ctl] move to accepting only once instance name per command
The rationals behind this decision are:
- while in the past managing all instances sytem wide made a lot of sens,
pratices have evolved today and we've moved to managing one instance by one
- this makes things easier to debug since commands since using them on several
instances were making this harder (errors hidden in the middle)
- also solve the problem of the return code to have, before it was always 0
which prevented to do things like:
ipython --pdb $(which cubicweb-ctl) $command $instance
or shell scripts that used it
- this simplify the code and is always good to take
3.27 (not yet released)
=======================
New features
------------
* Tests can now be run concurrently across multiple processes. You can use
`pytest-xdist`_ for that. For tests using `PostgresApptestConfiguration` you
should be aware that `startpgcluster()` can't run concurrently. Workaround is
to call pytest with ``--dist=loadfile`` to use a single test process per test
module or use an existing database cluster and set ``db-host`` and
``db-port`` of ``devtools.DEFAULT_PSQL_SOURCES['system']`` accordingly.
.. _pytest-xdist: https://github.com/pytest-dev/pytest-xdist
* on `cubicweb-ctl create` and `cubicweb-ctl pyramid`, if it doesn't already
exist in the instance directory, the `pyramid.ini` file will be generated
with the needed secrets.
Backwards incompatible changes
------------------------------
* Standardization on the way to launch a cubicweb instance, from now on the
only way to do that will be the used the ``pyramid`` command. Therefore:
* ``cubicweb-ctl`` commands "start", "stop", "restart", "reload" and "status"
have been removed because they relied on the Twisted web server backend that
is no longer maintained nor working with Python 3.
* Twisted web server support has been removed.
* ``cubicweb-ctl wsgi`` has also been removed.
* Support for legacy cubes (in the 'cubes' python namespace) has been dropped.
Use of environment variables CW_CUBES_PATH and CUBES_DIR is removed.
* Python 2 support has been dropped.
* Exceptions in notification hooks aren't catched-all anymore during tests so
one can expect tests that seem to pass (but were actually silently failing)
to fail now.
* All "cubicweb-ctl" command only accept one instance argument from now one
(instead of 0 to n)
Deprecated code drops
---------------------
Most code deprecated until version 3.25 has been dropped.