runCommand -package:wai-app-static -package:graphviz -package:shake is:exact -package:github-release -package:pandoc-plot -package:io-streams -package:cabal-install -package:process -package:libmpd

Run command against the database and return its result
Either calls the given continuation, prints help text and calls exitSuccess, or prints an error and calls exitFailure. See runSubcommand for details on subcommand support.
Runs a command using the shell.
Given a list of command/action pairs, prompt the user to choose a command using dmenu and return the corresponding action.