nushell-mode: init nushell-mode

config.el

@@ -92,6 +92,9 @@
   :config
   (setq c-basic-offset 4))
 
+(use-package nushell-mode
+  :mode "\\.nu\\'")
+
 (use-package spacious-padding
   :config
   (spacious-padding-mode))

lib.nix

@@ -38,6 +38,7 @@ let
             haskell-mode
             qml-mode
             tuareg
+            nushell-mode
             envrc
             ;
           treesit-grammars = epkgs.treesit-grammars.with-all-grammars;