usage: $(basename $0) [options] <package> [<version> [<archive type>]]

default values for <version> and <archive type> are defined in <package>'s
'defaults.sh' file.  if the <version> given is 'default', the version defined
in the package's 'defaults.sh' file will be used. 

options:
    --verbose: show a more verbose exit message.
    --defaults: print the defaults.sh file for the package and exit.
    --set-checks: set values in checks file rather than checking against them.