Install libghc-utf8-string-prof by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-utf8-string-prof
Description:
Profiling support for the GHC Haskell UTF-8 library
UTF8 layer for Strings. The utf8-string package provides operations for encoding UTF8 strings to Word8 lists and back, and for reading and writing UTF8 without truncation. . This package contains additional GHC profiling libraries which can be used with libghc-utf8-string-dev.
Homepage: http://github.com/glguy/utf8-string/
Version: 1.0.1.1-4build1
Section: universe/haskell