runCommand -package:wai-app-static -package:libmpd -package:shake -package:xmonad-contrib -package:options -package:shake-plus -package:quickcheck-state-machine -package:cabal-install -package:mongoDB -package:pandoc-plot -package:process -package:hledger -package:github-release -package:io-streams
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.
Called before a command is about to run. The first argument is the
step index and the second is a string representing the command about
to be run.