Re: ICU Collations and Collation Updates

Le Mon, 14 Apr 2025 10:36:40 -0400,
Tom Lane <tgl@sss.pgh.pa.us> a écrit :
[…]
> 2. It's at least *possible* to use your own fixed-version ICU
> library if you're desperate enough.  I don't think that would work
> too well for libc; you're stuck with what the platform provides.

You're not so stuck with what the plateform provides as you can define your own
collation with glibc. Here a quick exemple with an ebcdic collation based on
glibc:

https://www.postgresql.org/message-id/flat/20230824162653.34eb3bad%40karst#31c548587bc98686e010e500a2f97d97

It's probably another level of maintenance to provide a stable UTF8 collation
using such a procedure though. But it seems possible at least.