Add haskell lsp mode

modules/lang/haskell/+lsp.el

@@ -0,0 +1,8 @@
+;;; lang/haskell/+lsp.el -*- lexical-binding: t; -*-
+
+(def-package! lsp-haskell
+  :after haskell-mode
+  :init (add-hook 'haskell-mode-hook #'lsp)
+  :config
+  ;; Does some strange indentation if it pastes in the snippet
+  (setq company-lsp-enable-snippet nil))

modules/lang/haskell/config.el

@@ -1,7 +1,8 @@
 ;;; lang/haskell/config.el -*- lexical-binding: t; -*-
 
 (cond ((featurep! +intero) (load! "+intero"))
-      ((featurep! +dante)  (load! "+dante")))
+      ((featurep! +dante)  (load! "+dante"))
+      ((featurep! +lsp)    (load! "+lsp")))
 
 ;;
 ;; Common packages

modules/lang/haskell/packages.el

@@ -7,4 +7,6 @@
        (package! dante)
        (package! attrap))
       ((featurep! +intero)
-       (package! intero)))
+       (package! intero))
+      ((featurep! +lsp)
+       (package! lsp-haskell)))