Some links regarding time64:
https://musl.libc.org/time64.html
musl 1.2.0 changes the definition of time_t, and thereby the definitions of all derived types, to be 64-bit across all archs. This and related changes are collectively referred to as “time64”, and are necessary so that data types and functions dealing with time can represent time past early 2038, where the existing 32-bit type on 32-bit archs would overflow.
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Adélie Linux and Yoe/Yocto/OpenEmbedded did the early groundwork building large package corpuses against time64 musl during the 1.2.0 release cycle and found and patched all build-time breakage found, as well as obvious run-time problems.
https://sourceware.org/pipermail/libc-alpha/2022-November/143386.html
One more reason to use 64-bit systems …