class Bundler::Injector

def remove_deps(gemfile_path)
  initial_gemfile = File.readlines(gemfile_path)
  Bundler.ui.info "Removing gems from #{gemfile_path}"
  # evaluate the Gemfile we have
  builder = Dsl.new
  builder.eval_gemfile(gemfile_path)
  removed_deps = remove_gems_from_dependencies(builder, @deps, gemfile_path)
  # abort the operation if no gems were removed
  # no need to operate on gemfile further
  return [] if removed_deps.empty?
  cleaned_gemfile = remove_gems_from_gemfile(@deps, gemfile_path)
  SharedHelpers.write_to_gemfile(gemfile_path, cleaned_gemfile)
  # check for errors
  # including extra gems being removed
  # or some gems not being removed
  # and return the actual removed deps
  cross_check_for_errors(gemfile_path, builder.dependencies, removed_deps, initial_gemfile)
end