asdf-upgrade
This is a start at an ASDF-extension to upgrade installed packages. Rather than attempt to parse and compare versions, it works by comparing timestamps of a package's installed version against the latest available tarball.

Currently, there is no reliable installation time timestamp to use for comparison---a patch to ASDF-INSTALL is forthcoming. Until then, this won't really work reliably.

ASDF-install package (obsolete) http://slacknet.com/~jamesjb/asdf-upgrade_0.2.tar.gz