`eb init` fails with pkg_resources.ContextualVersionConflict PyYAML 4.1

[john_mccabe]

Having some trouble deploying my elastic beanstalk app from a bitbucket pipeline. This same code had been working without issue, so my best guess is some kind of dependency issue.

(awsebcli version 3.14.1)

The image for the pipeline is python:3.5.2 and here's the failing step:

- step:
 name: Test Deploy
 deployment: test
 caches:
 - pip
 script:
 - pip install awsebcli --upgrade
 - eb init myAppName -r us-east-1 -p Python
 - eb deploy myAppName-dev-1

and the error output:

eb init myAppName -r us-east-1 -p Python Traceback (most recent call last): File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 570, in _build_master ws.require(__requires__) File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 888, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 779, in resolve raise VersionConflict(dist, req).with_context(dependent_req) pkg_resources.ContextualVersionConflict: (PyYAML 4.1 (/usr/local/lib/python3.5/site-packages), Requirement.parse('PyYAML<4,>=3.10'), {'docker-compose'}) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/local/bin/eb", line 6, in <module> from pkg_resources import load_entry_point File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3095, in <module> @_call_aside File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3079, in _call_aside f(*args, **kwargs) File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3108, in _initialize_master_working_set working_set = WorkingSet._build_master() File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 572, in _build_master return cls._build_from_requirements(__requires__) File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 585, in _build_from_requirements dists = ws.resolve(reqs, Environment()) File "/usr/local/lib/python3.5/site-packages/pkg_resources/__init__.py", line 779, in resolve raise VersionConflict(dist, req).with_context(dependent_req) pkg_resources.ContextualVersionConflict: (PyYAML 4.1 (/usr/local/lib/python3.5/site-packages), Requirement.parse('PyYAML<4,>=3.10'), {'docker-compose'})

So if I'm reading this right, I have PyYAML 4.1 when I need something less than 4.

Any insights into how to resolve this conflict would be greatly appreciated. Thanks for reading.

[john_mccabe · Accepted solution]

I changed the pip install line to explicitly use an older version of PyYAML and that seems to have worked...

Changed

pip install awsebcli --upgrade

To

pip install pyYAML==3.12 awsebcli --upgrade