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 is:exact -package:process -package:pandoc-plot -package:graphviz -package:mongoDB -package:libmpd
Given a list of command/action pairs, prompt the user to choose a
command using dmenu and return the corresponding action.