Since the original merge of this code
(04208e7c79) several things have
changed; particularly now we ship dib-run-parts as part of dib, not as
a separate package.
We setup $_LIB to point to the shipped library diretory via
pkg_resources lookups. We now call dib-run-parts (as mentioned,
shipped as a dib library now), source scripts, etc. via $_LIB and thus
do not rely on $PATH. Consequently we don't need this activation
part.
Which is helpful, because "venv" (as opposed to virtualenv) doesn't
have activate_this.py. So this fixes installation under that for
Python 3.
We update the functional tests to use the virtualenv_command exported
by the ensure-pip role, which will test the venv path. There is no
need for dib_python as we are Python 3 only now.
Change-Id: Iede929ea2d278008220aac8b1d678ba41eba0d8a
The standard Python venv module does not have this script, so currently
DIB unconditionally fails. While a real fix will be provided in
https://review.opendev.org/#/c/704478/ this change at least allows
users to try work around the problem.
Change-Id: I45b79d4d283f2b3ea909612e652672dcb6092488
99-squash-package-install in the package-installs element does not
know which python environments the requirements were installed into.
This can cause it to select the wrong python to run the
package-installs-squash script.
Co-Authored-By: Adam Harwell <flux.adam@gmail.com>
Change-Id: I5fab0e192c3a2dad8f60e821c184479e24e33bcd
execfile() has gone in python3, and if you google various
stackoverflow results, python-dev mailing list threads and other
projects it seems runpy is considered one of the better solutions.
This should be py2.7 safe too.
Change-Id: I18077ba9d603752492cc81f260e12710981f4dff
Because we're still fundamentally a python program calling a
shell-script, there's some oddities like not having the virtualenv
bin/ in the $PATH if we call disk-image-create directly.
We can detect this, however, and activate the virtualenv before we
fork the disk-image-create shell script so everything "just works".
See also nodepool change I0537cbf167bb18edf26f84ac269cbd9c8a1ea6a2
Change-Id: Ibfea6cf6a6fd0c7f1e468d501c61ae0b58992042
Remove the x bit from lib/disk-image-create; because it's called
directly by the entry-point, it doesn't need to be exectuable.
This should also be clearer that you're not supposed to run it
by hand.
Remove some boilerplate from old file
Change-Id: Ibb6cdae613e6c9cf21dd6aecc8e1f739bc3a2643
It has always been a weird thing that dib is a python package, but
is totally driven by the disk-image-create script. It creates this
strange division that is hard to explain.
This moves disk-image-create to a regular python entry-point
Currently, this simply exec()s the original disk-image-create script.
However, we now have a (private) interface between disk-image-create
written in python and the driver shell script. Here's some things we
could do, for example:
* Argument parsing is generally nicer in Python, and then end result
is mostly just setting environment variables to flag different things
in the shell script. I could see us moving the argument-parsing into
diskimage_builder.disk_image_create:main() and just setting things in
os.environ before the exec()).
* I7092e1845942f249175933d67ab121188f3511fd sets IMAGE_ELEMENT_YAML in
disk-image-create by calling-back to element-info. We can just call
element_dependencies.find_all_elements() in here an export is to
os.environ before disk-image-create starts.
* remove need for ramdisk-image-create symlink by just exporting
IS_RAMDISK based on sys.argv[1] value
* you could even unit test some of this :)
Change-Id: I69ca3d26fede0506a6353c077c69f735c8d84d28
Dmitry Tantsur