Binary package “libghc-semigroups-doc” in ubuntu focal

Haskell98 semigroups; documentation

 It contains a Haskell 98 logically-uninhabited data type used to
 indicate that a given term should not exist.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.