diff --git a/cray-osx-nonix.el b/cray-osx-nonix.el
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+;;-*-mode: emacs-lisp; coding: utf-8;-*-
+;; All these variables control what/how readme.org gets tangled
+;; into dotfiles. Off by default set to t to turn them on as
+;; needed.
+
+;; OS types
+(setq bsd-p nil)
+(setq linux-p nil)
+(setq osx-p t)
+
+;; Optional things
+(setq nix-p nil)
+(setq tmux-p t)
+(setq git-p t)
+(setq emacs-p t)
+(setq vim-p nil)
+(setq zsh-p t)
+(setq mosh-p t)
+(setq x-p t)
+
+;; Language specific
+(setq haskell-p t)
+(setq perl-p t)
+(setq ruby-p nil)
+
+;; Cray specific predicate
+(setq cray-p t)