Add EMACS26+ & EMACS27+ constants

core/core-lib.el

@@ -6,7 +6,7 @@
   (require 'map))
 
 (eval-and-compile
-  (when (version< emacs-version "26")
+  (unless EMACS26+
     (with-no-warnings
       (defalias 'if-let* #'if-let)
       (defalias 'when-let* #'when-let))))

core/core.el

@@ -56,6 +56,9 @@ Use this for files that change often, like cache files.")
 (defvar doom-packages-dir (concat doom-local-dir "packages/")
   "Where package.el and quelpa plugins (and their caches) are stored.")
 
+(defconst EMACS26+ (not (version< emacs-version "26")))
+(defconst EMACS27+ (not (version< emacs-version "27")))
+
 
 ;;;
 ;; UTF-8 as the default coding system