sqlite-icu

How are you distributing SQLite now? That is, do you compile and distribute the version from sqlite.org or do you depend on someone else to package it for you? If the former, then change the compile flags. If the latter, isn't the problem that your distro/packaging provider didn't enable the flags you wanted? Complain to them. As a quick look, I see https://github.com/karlb/sqlite-icu claims "includes a loadable icu extension module for sqlite. This allows other python packages to use this extension without requiring dependencies outside of the python ecosystem". I've never tried it. There are also alternate sqlite bindings for Python, like https://github.com/coleifer/cysqlite .

If you are interested in pip installable versions of SQLite's spellfix and ICU extensions, have a look at https://github.com/karlb/sqlite-spellfix and https://github.com/karlb/sqlite-icu. In contrast to the submission, these can be installed even when no pre-built wheel is available (but ICU requires the ICU-dev package in that case, which limits the advantage). Since these are based on the official SQLite extensions written in C, this is much easier to achieve than with the rust extensions in the submission.