Setup all the plugins for haskell lsp server

nix/modules/haskell/lisp/fg42/haskell-support.el

@@ -30,21 +30,22 @@
   (require 'eglot)
   ;; This is just a referece for the future
   (setq-default eglot-workspace-configuration
-                (mapcar
-                 (lambda (x) `(haskell
-                               (plugin
-                                (,x
-                                 (globalOn . t)))))
-                 '(ghcide-code-actions-fill-holes
-                   ghcide-completions
-                   ghcide-hover-and-symbols
-                   ghcide-code-actions-type-signatures
-                   ghcide-code-actions-bindings
-                   ghcide-code-actions-imports-exports
-                   class
-                   hlint
-                   splice
-                   stan)))
+                `((haskell
+                   (plugin
+                    ,@(mapcar
+                       (lambda (x)
+                         `(,x
+                           (globalOn . t)))
+                       '(ghcide-code-actions-fill-holes
+                         ghcide-completions
+                         ghcide-hover-and-symbols
+                         ghcide-code-actions-type-signatures
+                         ghcide-code-actions-bindings
+                         ghcide-code-actions-imports-exports
+                         class
+                         hlint
+                         splice
+                         stan))))))
   (eglot-ensure))
 
 
@@ -56,21 +57,26 @@
 
   :config
   (require 'haskell)
+  ;; We use lang server for this
+  (setq haskell-stylish-on-save nil)
+
+  ;; The upstream default is:
+  ;; cabal build --ghc-option=-ferror-spans
+  (setq-default haskell-compile-cabal-build-command "cabal v2-build --ghc-option=-ferror-spans")
+  (setq-default haskell-process-type 'cabal-new-repl)
+  (setq-default haskell-completing-read-function #'completing-read)
+
   (defun haskell-setup-outline-mode ()
     (make-local-variable 'outline-regexp)
     (setq outline-regexp "\\`\\|\\s-+\\S-"))
 
-  :custom
-  (eglot-autoshutdown t) ;; shutdown language server after closing last file
-  (eglot-confirm-server-initiated-edits nil) ;; allow edits without confirmation
-
   :hook
   (haskell-mode . fg42/ensure-lang-server)
   (haskell-mode . fg42/setup-completion)
   (haskell-mode . flyspell-prog-mode)
   (haskell-mode . interactive-haskell-mode)
   (haskell-mode . turn-on-haskell-doc-mode)
-  (haskell-mode . haskell-indent-mode)
+  (haskell-mode . haskell-indentation-mode)
   (haskell-mode . haskell-setup-outline-mode)
 
   :bind