Speaking of core-updates, I made a mistake during the latest merge last spring. We needed a new wget release and the wget maintainers took some time, so I rolled a "non-release" 1.21.3.24 before the 1.21.4 release (in core-updates, commit 93f9c260ac333ae7b86bfaeeead674fe01d924ce updates wget to the 1.21.4 release, one more reason to hope for a merge soon), for which I stored a .tar.lz on a server of my own.
However, this release does not exist (and I actually removed the file from the server, but for the time being keep it still around on my laptop, and it is still available in the build farm); and I did not realise it would break the time machine (which I did not use at the time). Is there a good way forward to allow a way backward? Sorry for the breakage, Andreas