In our RubyMotion Rakefile, we'll want to be able to have different settings — especially for codesigning — when building for the simulator, device for development testing or device for adhoc/release testing. Based on this nice tip from Ben Sheldon, I've derived something simple for myself. Here's the relevant parts:

Motion::Project::App.setup do |app|
  env = if ENV['dev'] == '1'
          'dev'
        elsif ENV['adhoc'] == '1'
          'adhoc'
        else
          'dev' #default
        end

  #...

  if env == 'dev'
    #...
  elsif env == 'adhoc'
    #...
  end
end

task :set_adhoc do
  ENV['adhoc'] = '1'
end

task :tf => [
  :set_adhoc,
  :testflight
]

Use the :tf task instead of :testflight and everything will work as expected:

rake retina=4   #This will default to dev=1, but it doesn't matter
rake device debug   #This will default to dev=1
rake tf notes="//"  #This will run testflight with adhoc=1

Note: Updated based on feedback from Ben Sheldon.

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