Here's a partial solution (still not perfect, because this only ends up hitting anoter missing function, SWANK:OPERATE-ON-SYSTEM-FOR-EMACS, and that one I haven't successfully made to work): +(defslimefun list-asdf-systems () + (loop for name being the hash-key of asdf::*defined-systems* + collect name)) What I (ideally) want to have back is the "load an ASDF-based system, get a list of warnings, errors, informational wossnames in a tree-based view, with a direct link to where in the source it was signalled from when that is known". I suspect that is a bit more than what I currently have working. However, since it's been in previous versions, I suspect hunting down OPERATE-ON-SYSTEM-FOR-EMACS from there might be Just The Thing. //Ingvar