~/.emacs.d: add a tiny mode for pixie

based on clojure-mode, which must be installed.

.emacs.d/init.el

(add-hook 'clojure-mode-hook 'paredit-mode)
(define-derived-mode pixie-mode clojure-mode "Pixie"
  "Major mode for editing Pixie files"
  (setq-local inferior-lisp-program "pixie-vm"))
(add-to-list 'auto-mode-alist '("\\.pxi\\'" . pixie-mode))
(custom-set-variables
 '(initial-buffer-choice (get-buffer "*scratch*"))
 '(haskell-mode-hook '(turn-on-haskell-simple-indent)))