runCommand -package:wai-app-static -package:io-streams -package:graphviz -package:mongoDB -package:github-release -package:pandoc-plot -package:quickcheck-state-machine -package:structured-cli is:exact -package:options -package:hledger

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.