travis-ci: disable python3.4 build due to failing `pipenv sync`
$ pipenv sync --dev
Courtesy Notice: Pipenv found itself running within a virtual environment, so it will automatically use that environment, instead of creating its own for any project. You can set PIPENV_IGNORE_VIRTUALENVS=1 to force pipenv to ignore that environment and create its own instead.
Installing dependencies from Pipfile.lock (fc6f3c)...
Traceback (most recent call last):
File "/home/travis/virtualenv/python3.4.8/bin/pipenv", line 11, in <module>
sys.exit(cli())
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/vendor/click/core.py", line 722, in __call__
return self.main(*args, **kwargs)
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/vendor/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/vendor/click/core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/vendor/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/vendor/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/vendor/click/decorators.py", line 17, in new_func
return f(get_current_context(), *args, **kwargs)
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/cli.py", line 1049, in sync
pypi_mirror=pypi_mirror,
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/core.py", line 2518, in do_sync
system=system,
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/core.py", line 1322, in do_init
pypi_mirror=pypi_mirror,
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/core.py", line 807, in do_install_dependencies
pypi_mirror=pypi_mirror,
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/core.py", line 1375, in pip_install
package_name.split('--hash')[0].split('--trusted-host')[0]
File "/home/travis/virtualenv/python3.4.8/lib/python3.4/site-packages/pipenv/vendor/requirementslib/models/requirements.py", line 704, in from_line
line, extras = _strip_extras(line)
TypeError: 'module' object is not callable
https://travis-ci.org/fphammerle/freesurfer-volume-reader/jobs/524977768