Install ghc-testsuite by entering the following commands in the terminal:
sudo apt update sudo apt install ghc-testsuite
Description:
GHC testsuite results
This package is just a container for the results of the GHC testsuite. There is usually no point in installing this package.
Homepage: http://hackage.haskell.org/trac/ghc/wiki/Building/RunningTests
Version: 8.0.2-1
Section: universe/haskell