runCommand -package:shake -package:amazonka-cloudwatch-events -is:exact -package:io-streams -package:pandoc-plot is:exact -package:github-release -package:process -package:cabal-install -package:hledger -package:mongoDB

Run an external command on the specified DotRepr. Remember to use hSetBinaryMode on the Handle for the output function if necessary. If the command was unsuccessful, then a GraphvizException is thrown. For performance reasons, a temporary file is used to store the generated Dot code. As such, this is only suitable for local commands.
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.
Given a list of command/action pairs, prompt the user to choose a command using dmenu and return the corresponding action.