def install dep_or_name, version = Gem::Requirement.default
if String === dep_or_name then
find_spec_by_name_and_version dep_or_name, version
else
@specs_and_sources = [find_gems_with_sources(dep_or_name).last]
end
@installed_gems = []
gather_dependencies
@gems_to_install.each do |spec|
last = spec == @gems_to_install.last
next if @source_index.any? { |n,_| n == spec.full_name } and not last
say "Installing gem #{spec.full_name}" if Gem.configuration.really_verbose
_, source_uri = @specs_and_sources.assoc spec
begin
local_gem_path = Gem::RemoteFetcher.fetcher.download spec, source_uri,
@cache_dir
rescue Gem::RemoteFetcher::FetchError
next if @force
raise
end
inst = Gem::Installer.new local_gem_path,
:bin_dir => @bin_dir,
:development => @development,
:env_shebang => @env_shebang,
:force => @force,
:format_executable => @format_executable,
:ignore_dependencies => @ignore_dependencies,
:install_dir => @install_dir,
:security_policy => @security_policy,
:source_index => @source_index,
:user_install => @user_install,
:wrappers => @wrappers
spec = inst.install
@installed_gems << spec
end
@installed_gems
end