[flohofwoe]

On other CI systems it is also a good idea to only use the YAML file to call a bash/python/deno/... script which does the actual work.

[GoblinSlayer]

Might as well be just a text file with a command to run.

[flohofwoe]

You still need some high level structure to define jobs running on different platforms and their dependencies, so that jobs can run in parallel. Doesn't need to be written in YAML of course, or even declarative style.