runCommand -package:wai-app-static -package:libmpd -package:shake -package:xmonad-contrib -package:options -package:shake-plus -package:quickcheck-state-machine -package:github-release -package:graphviz -package:io-streams -package:hledger package:beam-migrate
Called before a command is about to run. The first argument is the
step index and the second is a string representing the command about
to be run.