[racket] cues of PLaneT activity when running from command-line

At Thu, 03 Mar 2011 05:53:07 -0500, Neil Van Dyke wrote:
> When running from the command line, is there a way to get an indicator 
> that PLaneT package installation (and documentation formatting) is 
> happening?
> 
> The delays can be a few minutes long and make a program look hung.  And 
> if the user aborts the program, their PLaneT and documentation could be 
> left in a broken state.
> 
> Perhaps a one-line stderr message for each PLaneT package that is 
> installed?  This message could be turned on or off via a command-line 
> switch.

The command-line switch is `-W info', since package-installation
information goes to the log at the "info" level. It's not just one
line, though.