{Boris Veytsman} {Packaging Arsenal fonts for \XeLaTeX\ and Lua\LaTeX} {In 2011 the Ukrainian Type Design Competition ``Mystetsky Arsenal'' (\url{http://www.ukrainian-type.com/about}) was won by the font by Andrij Shevchenko. The competition was aimed at the creation of a modern practical font based on Ukrainian traditions. The winner is remarkable for its clarity and clean shapes. One of the conditions for the competition was the release of the winning font under a free license. This was very fortunate: the license allowed the original design to be extended by Alexei Vanyashin \& \url{cyreal.org}, Nhung Nguyen, and Marc Foley (see \url{https://github.com/alexeiva/Arsenal}). The font now supports a large number of languages with Latin and Cyrillic alphabet, it has real small caps, historic forms, swash capitals and many other features. I packaged the font for \LaTeX\ use (by the Unicode engines only) and added experimental math support. In this talk I discuss the process, my experience with using \texttt{fontspec} and \texttt{expl3} for font packaging, and the lessons learned.}