ruby-facets 2.9.3-2 (armhf binary) in ubuntu bionic

 Ruby Facets is the single largest collection of core extension
 methods and standard library additions available for the Ruby
 programming language.
 .
 The core library extend existing base classes with lot's of
 convenient methods and new base objects (Binding, Functor,
 Stackable, ...).
 .
 In addition to the core libraries, Facets provides dozens of
 additional classes, modules, mixins and light-weight frameworks.
 These solid libraries provide a general-purpose set of
 components commonly useful across a variety of applications
 (Dictionary, LinkedList, PQueue, Random, ...).