Binary package “libfst22-plugins-base” in ubuntu lunar

weighted finite-state transducers library (base plugins)

 OpenFst is a library for constructing, combining, optimizing, and searching
 weighted finite-state transducers (FSTs).
 .
 This package contains base extensions that will be dynamically loaded
 into any binary compiled with OpenFst if the LD_LIBRARY_PATH (or
 equivalent) includes /usr/lib/fst.