[Question] Issues Running on TravisCI

cfn-lint version: (cfn-lint --version)

Presumably latest from Pypi (invocation-method follows to explain the “presumably”):

• Initial problem:

Using:

install:
  - pip install --user cfn-lint

Resulted in numerous warnings related to SSL/TLS handlers and installed version of pip.

• Next break-point:

Updating to:

install:
  - pip install --user --upgrade pip
  - pip install --user cfn-lint

However, this resulted in a different job-failure:

$ pip install --user cfn-lint
Traceback (most recent call last):
  File "/usr/local/bin/pip", line 7, in <module>
    from pip import main
ImportError: cannot import name main
The command "pip install --user cfn-lint" failed and exited with 1 during .

• Functional work-around:

Googled and found a thread that indicated that pip 10+ changed how they handled import main and a recommendation to pin the pip upgrade to a version < 10. Ultimately, I modified my .travis.yml to do:

install:
  - pip install --user --upgrade pip==9.0.3
  - pip install --user cfn-lint

The above allowed cfn-lint to run.

Description of issue

Need advice for sustainability of current work-around for use with Travis, given the above. While the above works, staying on 9.0.3 is likely sub-optimal. Wanted to know if there was a more-recommended path forward.

Also: might some of this become a non-issue after Travis finishes migrating all projects to Xenial

Additional Information

• Worker information hostname: [e-mail]-1-worker-com-gce-8ng8 version: v6.1.0 https://github.com/travis-ci/worker/tree/a6071dd64658ecf13ec3190bfb9e9ca3c8f3e10d instance: travis-job-89a61bc2-af5a-4002-a51c-70443a743e7c travis-ci-connie-trusty-1512502258-986baf0 (via amqp)

Forcing use of Xenial as test platform also results in breakage (presumably because the base pip version is too high):

$ pip install --user cfn-lint
Traceback (most recent call last):
  File "/usr/local/bin/pip", line 7, in <module>
    from pip._internal import main
ImportError: No module named _internal
The command "pip install --user cfn-lint" failed and exited with 1 during .

[kddejong]

@ferricoxide should be released with v0.11.1

[kddejong]

I’ll take a look.