Hi all,

I'm having trouble upgrading ICU versions for Lucene since Lucene contains
some pre-compiled ICU files (brk and nrm) that would break if newer
versions are used at runtime.

Thus, I'm having two questions:
- How are those precompiled files generated (based on what sources)? Is
there a script we generally run to create those?
- Why aren't we generating them on the fly based on the available ICU
version at runtime? Would that enable users to upgrade ICU versions on
their own without breaking Lucene?

Regards,
Anh Dung Bui

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