Install libghc-constraints-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-constraints-dev
Description:
Constraint manipulation
GHC 7.4 gave us the ability to talk about ConstraintKinds. This package provides a vocabulary for working with them. . This package provides a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.
Homepage: http://github.com/ekmett/constraints/
Version: 0.9.1-1build1
Section: universe/haskell