Install libghc-x509-system-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-x509-system-doc
Description:
per-operating-system X.509 accessors and storage; documentation
This is meant to be a portable way of finding and accessing the system X.509 certificate store. . 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://github.com/vincenthz/hs-certificate
Version: 1.6.6-1build4
Section: universe/doc