Build RubyMotion for an adhoc environment.

my_app.rb

class MyApp
  class << self

    def app_store?
      RUBYMOTION_ENV == 'release'
    end

    def development?
      RUBYMOTION_ENV == 'development'
    end

    def release?
      !development?
    end

    # Set ENV to ADHOC when building
    # ADHOC=1 rake
    def adhoc?
      NSBundle.mainBundle.objectForInfoDictionaryKey('ADHOC')
    end

  end
end

Rakefile

# -*- coding: utf-8 -*-
$:.unshift('/Library/RubyMotion/lib')
require 'motion/project/template/ios'

begin
  require 'bundler'
  Bundler.require
rescue LoadError
end

Motion::Project::App.setup do |app|

  unless ENV['ADHOC'].nil?
    is_adhoc = ENV['ADHOC'] == '1' || (ENV['ADHOC'] =~ /true/i) == 0
    app.info_plist['ADHOC'] = is_adhoc
  end

end