It'll be a few days before I can, at best. I'm assuming that the test will fail on Windows because setting up a test directory with symlinks needs an elevated process. Running some tests to make sure "normal use" still works is more what matters to me, but I don't know what we'd need to do to make sure this code is exercised in a non-symlink case.

It's probably a non-issue, though, I did a quick test and copytree(..., symlinks=True) works unchanged when the source directory doesn't have symlinks, so there *should* be no issue.