fragment for dealing with S3 and plus sign in URLs. Part of a bigger tool that will be open-sourced at some point.

plusfiles.rb

# S3 translates a '+' in filenames to %2B in the URL, breaking apt
# Here we will traverse any file in the pool/ dir and create a hardlink for
# any file that has a plus in its name. apt/wget will do the right thing.
Dir.chdir('<%= @repo_root %>') do
  plusfiles = Dir.glob '**/*/*+*.deb'
  begin
    plusfiles.each do |file|
      File.link(file, file.gsub('+', ' '))
    end
  rescue SystemCallError # swallow this if file already exists
  end

end