Modular texlive and xelatex

[Andreas Enge]

Hello,

I am considering moving from the monolithic texlive distribution
(which is not easy to update with an essentially full hard drive...)
to the modular one, but do not find
   share/texmf-dist/tex/xelatex/xunicode/xunicode.sty

Does anyone know if this exists in some package?

Do we have a way of looking up which package contains a given file,
if at all (with cuirass or the data service)?

Andreas