cabal-prettify: Prettify your Cabal package configuration files!

See cabal-prettify.cabal for an example.

Quick start:

  • Prettify the configuration file of the package you are in right now:

    cabal-prettify --this
    
  • Prettify specified configuration files:

    cabal-prettify cabal-prettify.cabal examples/**/*.cabal
    
  • Prettify standard input:

    cabal-prettify --filter < cabal-prettify.cabal
    
  • Tidy up the directory structure:

    cabal-prettify --this --move
    
  • Check but do not modify, exit successfully if everything is already well formatted:

    cabal-prettify --this --check
    

Minutiae:

  1. Prettified files are backed up with the extension *.previous.

    1. Files that are already pretty are not backed up.

      This ensures that running cabal-prettify twice in a row does not overwrite the original.

Prior art: