The change Ia6f10741fa6be24b11d6991c8a6b6e07951ff68d introduced having
"when:" as a list of values. However, this was actually not
sufficient to express the logic required for arm64/x86_64/xenial
kernel matching we wanted.
Because the package name is a key, we can't have multiple entires in
the package-map YAML files. This means we can't do more advanced
matching and thus we need to be able to match through multiple
parameters. Similar to Ia6f10741fa6be24b11d6991c8a6b6e07951ff68d we
modify the matching rules to allow a list.
A an example of using this is provided in the README.rst, and this
same example worked through by the unit tests.
This also slightly updates the matching logic to be more sequential.
After each check we either continue on or log the failure and continue
to the next check (rather than set a list of flags then check that at
the end). This makes it much easier to understand what is being
matched in the logging output from the tool.
Change-Id: Idff7b067ad4255e6fc4138f7eff313a81b75c8ba
Allow the "when:" statements to be a list of values, which are
effectively anded together to filter the package install.
Change-Id: Ia6f10741fa6be24b11d6991c8a6b6e07951ff68d
Sometimes an element needs packages installed so that it can
perform tasks but those package are not appropriate for the
final image content. Add a "build-only" flag to package-install-squash
which will cause package to be installed at the beginning of the
phase and then uninstalled at the end of the phase.
Change-Id: Ie01b795991710c93f6b669c8f14b57eb4412c1d5
Provide a "when" option that provides for not installing packages
based on a = or != match on an environment variable.
Unit tests are added.
Change-Id: Ifa824dccaff69fd447f45d54cb4a3083bcabdd86
Currently we have all our elements and library files in a top-level
directory and install them into
<root>/share/diskimage-builder/[elements|lib] (where root is either /
or the root of a virtualenv).
The problem with this is that editable/development installs (pip -e)
do *not* install data_files. Thus we have no canonical location to
look for elements -- leading to the various odd things we do such as a
whole bunch of guessing at the top of disk-image-create and having a
special test-loader in tests/test_elements.py so we can run python
unit tests on those elements that have it.
data_files is really the wrong thing to use for what are essentially
assets of the program. data_files install works well for things like
config-files, init.d files or dropping documentation files.
By moving the elements under the diskimage_builder package, we always
know where they are relative to where we import from. In fact,
pkg_resources has an api for this which we wrap in the new
diskimage_builder/paths.py helper [1].
We use this helper to find the correct path in the couple of places we
need to find the base-elements dir, and for the paths to import the
library shell functions.
Elements such as svc-map and pkg-map include python unit-tests, which
we do not need tests/test_elements.py to special-case load any more.
They just get found automatically by the normal subunit loader.
I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28)
to move disk-image-create to a regular python entry-point.
Unfortunately, this has to move to work with setuptools. You'd think
a symlink under diskimage_builder/[elements|lib] would work, but it
doesn't.
[1] this API handles stuff like getting files out of .zip archive
modules, which we don't do. Essentially for us it's returning
__file__.
Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
2016-11-01 17:27:41 -07:00
Renamed from elements/package-installs/README.rst (Browse further)
