resolve_dependencies

# File lib/rubygems/dependency_installer.rb, line 433
  def resolve_dependencies dep_or_name, version # :nodoc:
    request_set = Gem::RequestSet.new
    request_set.development         = @development
    request_set.development_shallow = @dev_shallow
    request_set.soft_missing = @force
    request_set.prerelease = @prerelease
    request_set.remote = false unless consider_remote?

    installer_set = Gem::Resolver::InstallerSet.new @domain
    installer_set.ignore_installed = @only_install_dir

    if consider_local?
      if dep_or_name =~ /\.gem$/ and File.file? dep_or_name then
        src = Gem::Source::SpecificFile.new dep_or_name
        installer_set.add_local dep_or_name, src.spec, src
        version = src.spec.version if version == Gem::Requirement.default
      elsif dep_or_name =~ /\.gem$/ then
        Dir[dep_or_name].each do |name|
          begin
            src = Gem::Source::SpecificFile.new name
            installer_set.add_local dep_or_name, src.spec, src
          rescue Gem::Package::FormatError
          end
        end
      # else This is a dependency. InstallerSet handles this case
      end
    end

    dependency =
      if spec = installer_set.local?(dep_or_name) then
        Gem::Dependency.new spec.name, version
      elsif String === dep_or_name then
        Gem::Dependency.new dep_or_name, version
      else
        dep_or_name
      end

    dependency.prerelease = @prerelease

    request_set.import [dependency]

    installer_set.add_always_install dependency

    request_set.always_install = installer_set.always_install

    if @ignore_dependencies then
      installer_set.ignore_dependencies = true
      request_set.ignore_dependencies   = true
      request_set.soft_missing          = true
    end

    request_set.resolve installer_set

    @errors.concat request_set.errors

    request_set
  end