exenv homebrew formula

exenv.rb

require 'formula'

class Exenv < Formula
  homepage 'https://github.com/mururu/exenv'
  url 'https://github.com/mururu/exenv/tarball/v0.1.0'
  sha1 '8254e6351c9c5614aaa79923b152671d3585a188'

  def install
    prefix.install Dir['*']

    var_lib = "#{HOMEBREW_PREFIX}/var/lib/exenv/"
    ['plugins', 'versions'].each do |dir|
      var_dir = "#{var_lib}/#{dir}"
      mkdir_p var_dir
      ln_sf var_dir, "#{prefix}/#{dir}"
    end
  end

  def caveats; <<-EOS.undent
    To enable shims and autocompletion add to your profile:
      if which exenv > /dev/null; then eval "$(exenv init -)"; fi

    To use Homebrew's directories rather than ~/.exenv add to your profile:
      export EXENV_ROOT=#{opt_prefix}
    EOS
  end
end