Update haskell config

init.el

@@ -2053,10 +2053,13 @@ MAPS are expected to be keymaps for modes for languages with C-style comments."
                     (nthcdr 1 rules))))))
 
 ;; Haskell
+(use-package haskell-mode)
 (use-package haskell-ts-mode
-  :hook (haskell-ts-mode . my/eglot-if-trusted)
+  :hook ((haskell-ts-mode . my/eglot-if-trusted)
+         (haskell-ts-mode . haskell-indent-mode))
   :custom
-  (haskell-ts-use-indent t)
+  (haskell-ts-use-indent nil)
+  (haskell-ts-format-command "fourmolu --stdin-input-file %s")
   :init
   (add-to-list 'auto-mode-alist '("\\.hs\\'" . haskell-ts-mode)))