class ChefCLI::PolicyfileServices::Install

def prepare_constraints_for_update(to_update)
  ui.msg "Will relax constraints on:"
  to_update.each do |ck|
    ui.msg " - #{ck}"
  end
  policyfile_lock.cookbook_locks.each do |ck_name, location_spec|
    next if to_update.include?(ck_name)
    # we need to feed policyfile_compiler.cookbook_location_spec_for with a CookbookLocationSpecification
    policyfile_compiler.dsl.cookbook_location_specs[ck_name] = Policyfile::CookbookLocationSpecification.new(
      ck_name,
      Semverse::Constraint.new("=#{location_spec.version}"),
      location_spec.source_options,
      location_spec.storage_config
    )
  end
end