Peter Boling

Unpacking Gems doesn’t always work in some projects for various annoying reasons.

So this is just my hammer for the nail.

Some gems really don’t like to be unpacked… see:

def muck_gems
  ['capistrano_mailer','super_exception_notifier','sanitize_email','csv_pirate']
end

# execute commands in a different directory
def inside(dir, &block)
  FileUtils.cd(dir) { block.arity == 1 ? yield(dir) : yield }
end

desc "unpacks all muck gems into vendor/gems using versions installed on the local machine." 
task :unpack do
  gem_path = File.join(File.dirname(__FILE__), 'vendor', 'gems')
  FileUtils.mkdir_p(gem_path) unless File.exists?(gem_path)
  inside gem_path do
    muck_gems.each do |gem_name|
      system("gem unpack #{gem_name}")
      #Don't want it in vendor/gems, needs to be in gem's own folder, and that's harder to achieve
      dir = Dir.entries(gem_path).select {|x| x.match(gem_name)}.first
      system("gem specification #{gem_name} > #{gem_path}/#{dir}/.specification")
    end
  end
end

References: justinball.com metaclass.org