feat(lang): Add support for Haskell via haskell-mode

core/siren-core-modules.el

@@ -151,6 +151,7 @@
 (require 'siren-golang)
 (require 'siren-groovy)
 (require 'siren-haml)
+(require 'siren-haskell)
 (require 'siren-js)
 (require 'siren-json)
 (require 'siren-jsx)

modules/languages/siren-haskell.el

@@ -0,0 +1,26 @@
+;;; siren-haskell.el --- jimeh's Emacs Siren: haskell-mode configuration.
+
+;;; Commentary:
+
+;; Basic configuration for haskell-mode.
+
+;;; Code:
+
+(require 'siren-company)
+(require 'siren-folding)
+
+(use-package haskell-mode
+  :bind (:map haskell-mode-map
+              ("RET" . newline-and-indent))
+
+  :hook
+  (haskell-mode . siren-haskell-mode-setup)
+
+  :init
+  (defun siren-haskell-mode-setup ()
+    (company-mode +1)
+    (siren-folding)
+    (subword-mode +1)))
+
+(provide 'siren-haskell)
+;;; siren-haskell.el ends here