Guix

Stylish-haskell is a Haskell code prettifier. The goal is not to format all of the code in a file, to avoid "getting in the way". However, this tool can e.g. clean up import statements and help doing various tasks that get tedious very quickly. It can

• Align and sort import statements

• Group and wrap -# LANGUAGE #- pragmas, remove (some) redundant pragmas

• Remove trailing whitespaces

• Align branches in case and fields in records

• Convert line endings (customisable)

• Replace tabs by four spaces (turned off by default)

• Replace some ASCII sequences by their Unicode equivalent (turned off by default)