Install libghc-intern-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-intern-dev
Description:
hash consing for data types - libraries
Efficient hash-consing for arbitrary Haskell data types. . This package contains the libraries compiled for GHC.
Homepage: http://github.com/ekmett/intern/
Version: 0.9.1.4-3build1
Section: universe/haskell