libmorsmall-ocaml-dev 0.3.0-4build6 (arm64 binary) in ubuntu lunar

 The morsmall library defines a type for abstract syntax trees of
 POSIX shell scripts. It also provides a converter from the concrete
 syntax trees produced by the morbig parser to abstract syntax, and
 a printer from abstract syntax to shell.
 .
 This development library is only useful when you are developing
 OCaml programs that act on shell scripts.