Suppress warning about configure step #5
Description
I'm not sure if this warning is ever relevant or safe to suppress, but I have ignored it for my whole Haskell maintainer life.
Warning: Cannot run preprocessors. Run 'configure' command first.
However, this is surely confusing to a newbie. Especially if they end up using stackage configure:
$ stackage configure
Invalid argument `configure'
Usage: stackage [--help] [--version] [--summary] COMMAND
Run stackage commands
PS: Is there a paper cut tag for tooling issues? :)