This commit contains a few small changes to fix PyInstaller frozen
builds (which were recently broken in a few ways by changes introduced
with `tahoe invite`, `tahoe daemonize`, and the addition of "setuptools
>= 28.8.0" to setup_requires) and removes a couple of hacks that are no
longer necessary to create working frozen tahoe executables with
PyInstaller.
* use 'extras' for our `[test]` additions instead of abusing 'deps'
* use 'deps' to pre-install 'incremental', which we couldn't do when we
filled it with --editable to get `[test]`
* pre-install 'incremental' to work around a bug that strikes on Travis under
OS-X-10.12 as PyPI gradually disables TLS<1.2. See ticket 2913 for details
* remove redundant configuration lines
* require tox-2.4 or newer, to get 'extras'
refs ticket:2913
https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2913
There appears to be a bug in setuptools, triggered by running "python
setup.py sdist" with setuptools==11.3 in that python's environment, on a
project whose setup.py has a setup_requires= that requests setuptools >=
28.8.0. When setuptools is upgraded from inside setup.py, it gets into a
weird hybrid state where it's using setup() keyword-argument plugins from the
newer setuptools, but those plugins reference functions that aren't present
in the older setuptools, and the sdist command fails with an import
error (module object has no attribute 'check_specifier').
We don't actually need the sdist: all our tox test environments use
"skip_install = true", because we install tahoe via the "deps" line (so we
can get the `[test]` extra, and get a faster symlink-ish "editable" install).
That install uses "pip", which uses the pip inside the new virtualenv, which
either uses a newer version of setuptools (dependent upon what version of
"virtualenv" was installed in the parent environment, next to tox) or somehow
allows setuptools to be upgraded without exposing this weird broken hybrid
state.
Either way, skipping the sdist seems to fix this problem.
refs ticket:2910
https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2910
