The self-update mechanism checks the West and manifest repositories in
west/ for upstream changes and rebases them to the latest version if any
are found.
'west fetch' and 'west pull' run a self-update before fetching any
project data. It probably makes sense to always work with the latest
version of West and the manifest there. The self-update can be
suppressed with --no-update.
There's also a 'west update' command for manually updating West and/or
the manifest.
West automatically restarts itself after a self-update, before running
any commands or parsing the manifest. This makes it safe to add a new
feature to West and immediately start using it in the manifest.
The restarting is done with a plain exec(3). Getting this to work
required a few changes:
- West now uses absolute instead of relative imports, to make it
possible to execute src/west/main.py directly. This also makes it a
bit simpler to work on West. Relative imports seem to be discouraged
when googling around a bit.
__init__.py was removed from src/west. West is more of an application
than a package now (though it uses some packages internally).
- The internal 'cmd' package was renamed to 'commands', to avoid
clashing with a module in the Python standard library.
'runner' was renamed to 'runners' as well, for consistency.
The tests now have to be run from the West repository root with
'PYTHONPATH=src/west pytest'. The previous testing setup "just working"
relied on having run 'pip3 install -e .' first, which happened to add
src/west to the path due to the bootstrap script being there.
__init__.py was removed from the test directories as well. Packages
mostly make sense for tests if there are naming collisions, and naming
collisions will be obvious if packages aren't used.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
This ought to run the tests across a good enough spread of supported
Python versions to get started, and collect coverage statistics.
Signed-off-by: Marti Bolivar <marti@foundries.io>
Ulf Magnusson