Podfile

# ...

post_install do |rep|
	# merge Pods acknowledgements with submodules/externals acknowledgements
	merge_acknowledgements({
			:base    => 'Clue/Resources/Settings.bundle/External-Acknowledgments.plist',
			:include => 'Pods/Target Support Files/Pods-Clue/Pods-Clue-acknowledgements.plist',
		},
		'Clue/Resources/Settings.bundle/Acknowledgments.plist',
	)
end

def merge_acknowledgements(config, destination)
	require 'cfpropertylist'

	base_data = CFPropertyList::List.new(:file => config[:base])
	included_data = CFPropertyList::List.new(:file => config[:include])

	base = CFPropertyList.native_types(base_data.value)
	included = CFPropertyList.native_types(included_data.value)

	included['PreferenceSpecifiers'].each do | acknowledgement |
		next if ['acknowledgments', 'acknowledgements'].include?(acknowledgement['Title'].downcase)

		base['PreferenceSpecifiers'].push(acknowledgement)
	end

	destination_data = CFPropertyList::List.new
	destination_data.value = CFPropertyList.guess(base)
	destination_data.save(destination, CFPropertyList::List::FORMAT_XML)
end