Variable: lisp-directory
lisp-directory is a variable defined in startup.el.gz.
Value
"/nix/store/28cl4g19bb7qs35ng974bv3wvlsi2dz5-emacs-31-1/share/emacs/31.1/lisp/"
Documentation
Directory where Emacs's own *.el and *.elc Lisp files are installed.
Probably introduced at or before Emacs version 29.1.
Source Code
;; Defined in /usr/src/emacs/lisp/startup.el.gz
(defvar lisp-directory nil
"Directory where Emacs's own *.el and *.elc Lisp files are installed.")