Install libghc-keys-prof by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-keys-prof
Description:
Keyed functors and containers; profiling libraries
This package provides Keyed functors, Zippable functors, Zipping Keyed functors, Indexable functors. . This package provides a library for the Haskell programming language, compiled for profiling. See http://www.haskell.org/ for more information on Haskell.
Homepage: http://github.com/ekmett/keys/
Version: 3.11-3build5
Section: universe/haskell