runCommand -package:structured-cli -package:github-release -package:process -package:shake-plus -package:beam-migrate -package:xmonad-contrib is:exact -package:cabal-install -package:pandoc-plot -package:hledger -package:options -package:mongoDB -package:io-streams -package:lambdabot-core

Run a Command.
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.
Execute a Command.