hlint [files/directories] [options]
HLint is a tool for suggesting possible improvements to Haskell code. These suggestions include ideas such as using alternative functions, simplifying code and spotting redundancies.
"To check all Haskell files in 'src' and generate a report type:"
The full documentation for HLint is available in /usr/share/doc/hlint/README.md.gz.
This manual page was written by Joachim Breitner <nomeata@debian.org> for the Debian system (but may be used by others).