$ luarocks install --server=https://luarocks.org/dev lua-uca
This package adds support for the Unicode collation algorithm for Lua 5.3. It is mainly intended for use with LuaTeX and working TeX distribution, but it can work also as a standalone Lua module. You will need to install a required Lua-uni-algos package by hand in that case.
Versions
Dependencies
lua >= 5.1