This is only fixable going forward, right? Because it's a bug that affects the upgrade....
Old versions of ASDF may or may not like logical pathnames so much, anyway.
I guess this means that clisp is more fussy about accepting a pathname, rather than a pathname-designator in some circumstances.
Debugging (logical) pathnames is something I really don't want to do anymore, but with the help of trace, you can probably figure out where the bug is happening.
—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it — Richard Feynman