As always, I'm a bug fan of QL and many of the fantastic tools it makes available
Dan Lentz
quicklisp-slime-helper automates this to a degree by putting an .el file
in ~/quicklisp/ that always sets things up for the current slime
path. You can either use quicklisp-slime-helper (available via
quickloading) or derive the current path by merging the quicklisp
install path with the namestring in
<quicklisp>/dists/quicklisp/installed/releases/slime.txt - that file's
path does not vary, but its contents do.
Zach