This document provides instructions for installing and configuring several Clojure packages and tools using Emacs package-install. It first installs Slime, then configures it for use with Slime REPL. It then installs Clojure mode and associates .clj files with it. Next, it shows how to set up a sample Clojure project using Leiningen with dependencies and dev dependencies. It provides commands for downloading dependencies and starting the Swank server. Finally, it provides a brief example of defining a Fibonacci sequence.

13. http://tinyurl.com/2fhzp5p

23. (let ((buffer (url-retrieve-synchronously
"http://tromey.com/elpa/package-install.el")))
(save-excursion
(set-buffer buffer)
(goto-char (point-min))
(re-search-forward "^$" nil 'move)
(eval-region (point) (point-max))
(kill-buffer (current-buffer))))

24. ;;; This was installed by package-install.el.
;;; This provides support for the package system and
;;; interfacing with ELPA, the package archive.
;;; Move this code earlier if you want to reference
;;; packages in your .emacs.
(when
(load
(expand-file-name "~/.emacs.d/elpa/package.el"))
(package-initialize))

25. M-x package-install <ret> slime
(require 'slime)

26. M-x package-install <ret> slime-repl
(require 'slime-repl)
(setq slime-net-coding-system 'utf-8-unix
slime-protocol-version 'ignore)
(slime-setup '(slime-repl))

27. M-x package-install <ret> clojure-mode
(require 'clojure-mode)
(add-to-list 'auto-mode-alist
'(".clj$" . clojure-mode))

32. (defproject sample-program "1.0.0-SNAPSHOT"
:description "FIXME: write"
:dependencies [[org.clojure/clojure "1.2.0"]
[org.clojure/clojure-contrib "1.2.0"]])
(defproject sample-program "1.0.0-SNAPSHOT"
:description "FIXME: write"
:dependencies [[org.clojure/clojure "1.2.0"]
[org.clojure/clojure-contrib "1.2.0"]]
:dev-dependencies [[swank-clojure "1.2.1"]])

33. $ lein deps
$ lein swank

35. (ns sample-program.core)
(def fib-seq
(lazy-cat [0 1] (map + (rest fib-seq) fib-seq)))
(defn fib [n]
(nth fib-seq n))