Guix

SLY is Sylvester the Cat's Common Lisp IDE. SLY is a fork of SLIME, and contains the following improvements over it:

1. Completely redesigned REPL based on Emacs's own full-featured comint.el.

2. Live code annotations via a new sly-stickers contrib.

3. Consistent interactive button interface. Everything can be copied to the REPL.

4. Multiple inspectors with independent history.

5. Regexp-capable M-x sly-apropos.

6. Contribs are first class SLY citizens and enabled by default.

7. Use ASDF to loads contribs on demand.

SLY tracks SLIME's bugfixes and all its familiar features (debugger, inspector, xref, etc...) are still available, but with better integration.