Install libhugs-parsec-bundled by entering the following commands in the terminal:
sudo apt update sudo apt install libhugs-parsec-bundled
Description:
Monadic parser combinators
Parsec is designed from scratch as an industrial-strength parser library. It is simple, safe, well documented (on the package homepage), has extensive libraries and good error messages, and is also fast. . This is the version bundled with the interpreter.
Version: 98.200609.21-5.4build1
Section: universe/devel