Górny: The perils of transition to 64-bit time_t Michał Górny <a href="https://blogs.gentoo.org/mgorny/2024/09/28/the-perils-of-transition-to-64-bit-time_t/" rel="nofollow">describes the challenges</a> involved in transitioning Gentoo to year-2038-safe time representations: There is a general agreement that the way forward is to change time_t to a 64-bit type. Musl has already switched to that, glibc supports it as an option. A number of other distributions such as Debian have taken the leap and switched. Unfortunately, source-based distributions such as Gentoo don't have it that easy. So we are still debating the issue and experimenting, trying to figure out a maximally safe upgrade path for our users. Unfortunately, that's nowhere near trivial. Above all, we are talking about a breaking ABI change. https://lwn.net/Articles/992120/