Add preparation chapter to Emacs initialization

emacs/.emacs.d/init.org

@@ -9,14 +9,9 @@
 
 #+INCLUDE: "org/intro.org" :minlevel 2
 
-* Use lexical binding
+* Preparation
 
-  For some of these functions, and general coolness, lexical binding
-  is a must. Without it, closures cannot be made.
-
-  #+BEGIN_SRC emacs-lisp :padline no
-    ;; -*- lexical-binding: t -*-
-  #+END_SRC
+#+INCLUDE: "org/preparation.org" :minlevel 2
 
 * Some general-purpose functions and macros
 

emacs/.emacs.d/org/preparation.org

@@ -0,0 +1,43 @@
+#+STARTUP: showall
+
+Some things have to be done to make sure that everything works as it
+should. This includes enabling lexical binding, loading Cask and
+keeping some comments.
+
+* Use lexical binding
+
+  For some of my functions, and general coolness, lexical binding is a
+  must. Without it, closures cannot be made for example.
+
+  #+BEGIN_SRC emacs-lisp :padline no
+    ;; -*- lexical-binding: t -*-
+  #+END_SRC
+
+  This line needs to appear at the beginning of the file to work. Just
+  to keep things looking nice I put it at the beginning of the file.
+
+* Keep package.el from changing my init
+
+  Some time ago my init file was changed by Emacs. It added a single
+  line of code and some explanatory comments. Apparently I need to
+  keep this comment in my initialization file so that Emacs doesn't
+  try to add the code again. I actually use [[http://cask.readthedocs.org/en/latest/][Cask]] to manage and load my
+  packages so I don't need this.
+
+  #+BEGIN_SRC emacs-lisp
+    ;; (package-initialize)
+  #+END_SRC
+
+* Load Cask
+
+  I use Cask to manage my installed packages and for that to work I
+  need to load Cask at the start of the initialization file. This
+  should be executed both when byte-compiling and loading at run-time
+  so that other bits and pieces can byte-compile without warnings or
+  errors.
+
+  #+BEGIN_SRC emacs-lisp
+    (eval-and-compile
+      (require 'cask "~/projects/ext/cask/cask.el")
+      (cask-initialize))
+  #+END_SRC