Install libghc-src-exts-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-src-exts-doc
Description:
API documentation of the haskell-src-exts library; documentation
haskell-src-exts (HSX, haskell-source with extensions) is an extension of the standard haskell-src package, and handles most common syntactic extensions to Haskell, including: * Multi-parameter type classes with functional dependencies * Indexed type families (including associated types) * Empty data declarations * GADTs * Implicit parameters (ghc and hugs style) * Template Haskell . This package provides the documentation for a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.
Homepage: https://github.com/haskell-suite/haskell-src-exts
Version: 1.18.2-1build1
Section: universe/doc