Version Conflict with PyYAML 6.0 about pytest-docker

[Luminaar]

Hello, thank you for raising the issue.

There seems to be no easy solution ― the problem is in a transitive dependency that we have no control over (we depend on docker-compose which depends on pyyaml<6.0). One possible solution would be to submit an issue or PR to the docker-compose repository, though there is a new version of docker-compose which is not written in Python and I don't know how willing the devs will be to change the old version.

Another solution would be to use pyyaml<6.0 in your project, which of course might not be feasible if you depend on fixes from version 6 (from the changelog it seems that the main breaking change is removing support for Python2.7).

Finally, it might be possible to change pytest-docker in such a way to allow users to provide their own docker-compose installation instead of installing it directly. This will require a greater discussion as well as a major version bump.

[PJ-Schulz]

Thank for the detailed answer.
The easiest way is to use a version of pyyaml<6.0 at the moment. But if there will be new features in pyyaml in the future, they cannot be used together with pytest-docker. So this is not the best solution.

Using a pre-installed docker-compose has the same dependency on pyyaml<6.0, unless someone uses their own version of docker-compose or a version >2.

I have opened an issue on docker/compose to update the dependency to 6.0 : docker/compose#9114

[otetard]

An attempt to not strictly depend on Docker Compose (and not on PyYAML either) is provided in this PR: #72.

[n1ngu]

Fixed by #72, would you please close the issue @PJ-Schulz ?