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|
# frozen_string_literal: true
module Bundler
#
# This class handles installing and switching to the version of bundler needed
# by an application.
#
class SelfManager
def restart_with_locked_bundler_if_needed
return unless needs_switching? && installed?
restart_with_locked_bundler
end
def install_locked_bundler_and_restart_with_it_if_needed
return unless needs_switching?
Bundler.ui.info \
"Bundler #{current_version} is running, but your lockfile was generated with #{lockfile_version}. " \
"Installing Bundler #{lockfile_version} and restarting using that version."
install_and_restart_with_locked_bundler
end
private
def install_and_restart_with_locked_bundler
bundler_dep = Gem::Dependency.new("bundler", lockfile_version)
Gem.install(bundler_dep)
rescue StandardError => e
Bundler.ui.trace e
Bundler.ui.warn "There was an error installing the locked bundler version (#{lockfile_version}), rerun with the `--verbose` flag for more details. Going on using bundler #{current_version}."
else
restart_with_locked_bundler
end
def restart_with_locked_bundler
configured_gem_home = ENV["GEM_HOME"]
configured_gem_path = ENV["GEM_PATH"]
cmd = [$PROGRAM_NAME, *ARGV]
cmd.unshift(Gem.ruby) unless File.executable?($PROGRAM_NAME)
Bundler.with_original_env do
Kernel.exec(
{ "GEM_HOME" => configured_gem_home, "GEM_PATH" => configured_gem_path, "BUNDLER_VERSION" => lockfile_version },
*cmd
)
end
end
def needs_switching?
ENV["BUNDLER_VERSION"].nil? &&
Bundler.rubygems.supports_bundler_trampolining? &&
SharedHelpers.in_bundle? &&
lockfile_version &&
!lockfile_version.end_with?(".dev") &&
lockfile_version != current_version
end
def installed?
Bundler.configure
Bundler.rubygems.find_bundler(lockfile_version)
end
def current_version
@current_version ||= Bundler::VERSION
end
def lockfile_version
@lockfile_version ||= Bundler::LockfileParser.bundled_with
end
end
end
|
