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require "formula"
class NewEnoughEmacs < Requirement
fatal true
default_formula "emacs"
def satisfied?
major_version = `emacs --batch --eval "(princ emacs-major-version)"`.to_i
major_version >= 23
end
def message
"Emacs 23 or later is required to run cask."
end
end
class Cask < Formula
homepage "http://cask.readthedocs.org/"
url "https://github.com/cask/cask/archive/v0.7.2.tar.gz"
sha1 "2c8012487f06c6b4f47ce56bd021bb71753f1bd0"
head "https://github.com/cask/cask.git"
depends_on NewEnoughEmacs
def install
zsh_completion.install "etc/cask_completion.zsh"
bin.install "bin/cask"
prefix.install Dir["*.el"]
prefix.install "templates"
(share/"emacs/site-lisp").install_symlink "#{prefix}/cask-bootstrap.el"
(share/"emacs/site-lisp").install_symlink "#{prefix}/cask.el"
# Stop cask performing self-upgrades.
touch prefix/".no-upgrade"
end
end
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