subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226

git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789

1 files changed, 62 insertions, 0 deletions

diff --git a/users/wpcarro/emacs/.emacs.d/wpc/wpc-haskell.el b/users/wpcarro/emacs/.emacs.d/wpc/wpc-haskell.el
new file mode 100644
index 000000000000..f9ed8552e0be
--- /dev/null
+++ b/users/wpcarro/emacs/.emacs.d/wpc/wpc-haskell.el
@@ -0,0 +1,62 @@
+;;; wpc-haskell.el --- My Haskell preferences -*- lexical-binding: t -*-
+
+;; Author: William Carroll <wpcarro@gmail.com>
+;; Version: 0.0.1
+;; URL: https://git.wpcarro.dev/wpcarro/briefcase
+;; Package-Requires: ((emacs "24"))
+
+;;; Commentary:
+;; Hosts my Haskell development preferences
+
+;;; Code:
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Dependencies
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'macros)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Configuration
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; font-locking, glyph support, etc
+(use-package haskell-mode
+  :config
+  (macros-add-hook-before-save 'haskell-mode #'haskell-align-imports))
+
+;; LSP support
+(use-package lsp-haskell
+  :after (haskell-mode)
+  :config
+  (setq lsp-haskell-process-path-hie "hie-wrapper")
+  (add-hook 'haskell-mode-hook #'lsp-haskell-enable)
+  (add-hook 'haskell-mode-hook #'flycheck-mode))
+
+;; Test toggling
+(defun wpc-haskell-module->test ()
+  "Jump from a module to a test."
+  (let ((filename (->> buffer-file-name
+                       (s-replace "/src/" "/test/")
+                       (s-replace ".hs" "Test.hs")
+                       find-file)))
+    (make-directory (f-dirname filename) t)
+    (find-file filename)))
+
+(defun wpc-haskell-test->module ()
+  "Jump from a test to a module."
+  (let ((filename (->> buffer-file-name
+                       (s-replace "/test/" "/src/")
+                       (s-replace "Test.hs" ".hs"))))
+    (make-directory (f-dirname filename) t)
+    (find-file filename)))
+
+(defun wpc-haskell-test<->module ()
+  "Toggle between test and module in Haskell."
+  (interactive)
+  (if (s-contains? "/src/" buffer-file-name)
+      (wpc-haskell-module->test)
+    (wpc-haskell-test->module)))
+
+(provide 'wpc-haskell)
+;;; wpc-haskell.el ends here