[plt-scheme] Progress information from PLaneT

Hello,

I wonder whether it is possible to get any progress display or messages
that show what is happening from the long running PLaneT commands.

When adding some larger package with a bunch of dependencies to a fresh
PLT Scheme installation with planet install, one can wait for several
minutes for the command to complete and not a single line of output is
generated. In the documentation, the help output from the command line
utility and by experimentation I haven't found a way to enable any kind
of more verbose output than this total silence, except in case of errors :-(

>From a package manager I would expect that it at least prints out which
packages are being installed, preferrably together with counts of
packages already processed and remaining to be installed to give the
user an idea how long the setup may take.

cu,
Thomas