libghc-json-dev 0.9.1-3build1 (amd64 binary) in ubuntu xenial

 JSON (JavaScript Object Notation) is a lightweight data-interchange format. It
 is easy for humans to read and write. It is easy for machines to parse and
 generate. It is based on a subset of the JavaScript Programming Language,
 Standard ECMA-262 3rd Edition - December 1999.
 .
 This library provides a parser and pretty printer for converting between
 Haskell values and JSON.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.