Eh, no. You have Elisp+cl-lib but SBCL too, and you can use Sly wth SBCL. Of Lem with SBCL+Quicklisp: https://lem-project.github.io/usage/common_lisp/ https:/

Eh, no. You have Elisp+cl-lib but SBCL too, and you can use Sly wth SBCL. Of Lem with SBCL+Quicklisp: https://lem-project.github.io/usage/common_lisp/ https://lem-project.github.io/usage/common_lisp/ Huge tip: if you use MCCLIM, install Ultralisp first and (ql-quickload 'mcclim) later: it will give you a big speed boost. Big, not as the ones from Phoronix. Actually big. From 'I can almost see redrawing on a really old ass netbook' to 'snappy as TCL/Tk' under SBCL. https://ultralisp.org/ https://ultralisp.org/ As you can see, you don't need to pay thousands of dollars. For Scheme, S9 just targets R4RS but as a start it's more than enough, and for SICP you can install Emacs+Geiser+chicken Scheme and from any Linux/BSD: distro command prompt, you run: sudo chicken-install srfi-203 sudo chicken-install srfi-216 And, as a ~/.csirc file: (import scheme) (import (srfi 203)) (import (srfi 216)) To run SCM stuff for SICP: csi yourfile.scm or chicken-csi yourfile.scm Done. Get the SICP PDF and start doing SICP. You can use Emacs+Geiser with M-x install RET geiser-chicken if you are lazy. You can install the SICP book with M-xpackage-install RET sicp and read it from M-x info RET and do it everything from withing Emacs by running M-x geiser (pick chicken as the interpreter). Save your Emacs settings. Done.