Fix issues with nix Emacs on Mac

doom/config.el

@@ -125,3 +125,6 @@
 ;; "g u" in normal mode finds references, using LSP if available
 (map! :n "g u" #'xref-find-references)
 (map! :mode lsp-mode :n "g u" #'lsp-ui-peek-find-references)
+
+;; Insist on using regular "ls", to override Doom's insistence on "gls" on Mac+Nix
+(setq insert-directory-program "ls")