This runs trial against the latest (git) Twisted and Foolscap, to give
us an early warning about anything we're currently doing that will
become deprecated in their next releases.
Tox doesn't run shell pipelines, and is unhappy about running tools that
it didn't install itself (including non-python things like "make"). So
this adds misc/build_helpers/run-deprecations.py, a python script that
runs a given command (i.e. trial) and writes stdout into a separate file
where the buildbot can see it, and counts the "DeprecationWarning" lines
from the file to decide the returncode.
This ought to improve the status display on the buildbot "test
deprecations" step.
Our setup.cfg ensures that 'setup.py update_version' happens early
enough. And doing it from tox's commands= is too late anyways (because
we aren't using Versioneer, so the _version.py file must be updated
before tox installs a static copy into the virtualenv).
The buildbot's main run-trial-with-tox command has been updated to scan
for the 'tahoe --version' output and include the version string in the
buildbot results.
So use 'tox -e check-memory' instead of 'make check-memory'. The tox
version will create a virtualenv and install tahoe for you before
running the tests, removing one use of the 'tahoe @FILENAME' hack (which
was used to run a python file with a PYTHONPATH set to import tahoe's
dependencies).
This adds support for two environments: 'py27' for basic tests, and
'deprecations' to run tests with deprecation warnings turned on (the
latter is meant to be run from a buildbot step that knows how to count
and format the warnings nicely).
