I reached ~90% coverage and did not go any further on purpose because the remaining code will likely change in the coming weeks, so there is no point testing it I think. Some highlights of the PR: - I renamed the `germinate` plugin to `ubuntu-seed`, to apply what we discussed in the spec. - I fixed a lot of small things to satisfy the different linters. So it feels a lot has changed but most of it is just formatting or typing stuff. - I removed the `requirements.txt` and gather dependencies declaration in the `pyproject.toml` to avoid duplication and ease maintenance. - Based on what I read in the other *craft applications, I moved the “packing” logic in a ImagecraftPackage “service” and added a basic “ServiceFactory” - I dropped explicit support for windows/macos because for now it does not make sense to run imagecraft on these OS I think but if in the end everything is executed in a lxd container (or another provider) we could probably re-add it. - To avoid linters fighting each other I bumped the python minimum supported version to 3.10. I looked at other *craft applications and most of them do the same. We could discuss if we absolutely want to run imagecraft on python 3.8, but since we will most likely distribute it as a snap, it should not be a big problem at least for ubuntu users.