sly-quicklisp is an external contrib for SLY that provides a sly-quickload command C-c C-d C-q that prompts the user for a package to install.

The latest quicklisp dist is shown in the mode-line.

Perform the usual MELPA setup and then select sly-quicklisp for installation from the package menu or from M-x package-install.

Once it's done, M-x sly should now bring up a quicklisp enabled SLY.

In .lisp files you can now use M-x sly-quicklisp to be informed about the quicklispness of your Lisp.

Since this is an external contrib with both Elisp and Lisp parts, merely loading the Elisp will have little effect. The contrib has to be registered in SLY's sly-contribs variable for SLY to take care of loading the Lisp side on demand.

For convenience, the sly-quicklisp-autoloads file takes care of this automatically. So the following setup in your ~/.emacs or ~/.emacs.d/init/el init file should be enough:

;;; regular SLY setup
(setq inferior-lisp-program "/path/to/your/preferred/lisp")
(add-to-list 'load-path "/path/to/sly")
(require 'sly-autoloads)

(add-to-list 'load-path "/path/to/sly-quicklisp")
(require 'sly-quicklisp-autoloads)

In case you already have SLY loaded and running, you might have to M-x sly-setup and M-x sly-enable-contrib to enable it.

sly-quicklisp should now kick in in Lisp buffers.