Edit checkpoint label

The reason there is no edit button is that the underlying api doesn't expose editing the checkpoint label. But if we have a test that asserts the functionality I see no harm in messing with the internals (ie it might break at any moment, therefore we absolutely need a test to verify that it works)

Yes, I was just going through the files in core/lib/Drupal/Core/Config/Checkpoint. You are correct, the underlying API does not provide a way to change the label. Then, in that case, you may close this issue.

Thanks