For the current core-updates cycle, there is some talk of "rebuilding the world" to fix <https://bugs.gnu.org/50830> "glibc looks for $sysconfdir/etc/localtime rather than /etc/localtime".
We can also include the shortened Rust bootstrap and the tzdata update, respectively: <https://bugs.gnu.org/50358> <https://bugs.gnu.org/50859> How does that sound?
