lang/haskell: improve REPL support #752

modules/lang/haskell/autoload.el

@@ -0,0 +1,15 @@
+;;; lang/haskell/autoload.el -*- lexical-binding: t; -*-
+
+;;;###autoload
+(defun +haskell-repl-buffer ()
+  "Returns the appropriate Haskell REPL buffer."
+  (if (featurep! +intero)
+      (intero-repl-buffer arg)
+    (haskell-session-interactive-buffer (haskell-session))))
+
+;;;###autoload
+(defun +haskell/repl (&optional arg)
+  "Opens a Haskell REPL."
+  (interactive "P")
+  (display-buffer (+haskell-repl-buffer)))
+

modules/lang/haskell/config.el

@@ -11,6 +11,6 @@
   :hook (haskell-mode . hindent-mode))
 
 (after! haskell-mode
-  (set-repl-handler! 'haskell-mode #'switch-to-haskell)
+  (set-repl-handler! '(haskell-mode haskell-cabal-mode literate-haskell-mode) #'+haskell-repl-buffer)
   (add-to-list 'completion-ignored-extensions ".hi"))