Install libghc-directory-tree-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-directory-tree-doc
Description:
simple directory-like tree datatype, with IO functions; documentation
A simple directory-like tree datatype, with useful IO functions and Foldable and Traversable instance . Provides a simple data structure mirroring a directory tree on the filesystem, as well as useful functions for reading and writing file and directory structures in the IO monad. . 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://brandon.si/code/directory-tree-module-released/
Version: 0.12.1-3build1
Section: universe/doc