Install libghc-wai-app-file-cgi-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-wai-app-file-cgi-doc
Description:
file/CGI app of WAI; documentation
This WAI application handles static files and executes CGI scripts. . 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://www.mew.org/~kazu/proj/mighttpd/
Version: 3.1.3-1build7
Section: universe/doc