I was examining this run and I've noticed something peculiar in how the design works. In my test I have:

  rlRun "rsync -r $TMT_TREE$TMT_TEST_NAME/ $tmp" 0 "Copy example project"

But that does not work in upstream because it should point to TMT_SOURCE_DIR.

But then, what's the usecase of having TMT_TREE not point to TMT_SOURCE_DIR when using a plan with

discover:
  how: fmf
  dist-git-source: true

If we consider other cases when using how: fmf with url or otherwise, in those cases the source is available at TMT_TREE right? Only dist-git behaves differently with the downloaded tree pointing to a different location.

Is there a reason for having these be different? Should the behaviour be how non-dist-git download work, or the other way around? A temporary fix is possible with ${TMT_SOURCE_DIR:-$TMT_TREE}, but it is unexpected to have to do that.