runCommand -package:options -package:shake -package:beam-migrate -package:shake-plus -package:io-streams -package:structured-cli -package:cabal-install -package:quickcheck-state-machine -package:hledger -package:pandoc-plot package:xmonad-contrib

Given a list of command/action pairs, prompt the user to choose a command using dmenu and return the corresponding action.
Given the name of a command from defaultCommands, return the corresponding action (or the null action if the command is not found).
Given a list of command/action pairs, prompt the user to choose a command using dmenu-compatible launcher and return the corresponding action. See X.U.Dmenu for compatible launchers.