Install libghc-active-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-active-doc
Description:
Abstractions for animation; documentation
Inspired by the work of Kevin Matlage and Andy Gill (Every Animation Should Have a Beginning, a Middle, and an End, Trends in Functional Programming, 2010), this library defines a simple abstraction for working with time-varying values. In a sense, this is sort of like a stripped-down version of functional reactive programming (FRP), without the reactivity. . This package provides the documentation for a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.
Homepage: http://hackage.haskell.org/package/active
Version: 0.2.0.13-1build2
Section: universe/doc