require "pub_grub/package"
require "pub_grub/static_package_source"
require "pub_grub/term"
require "pub_grub/version_range"
require "pub_grub/version_constraint"
require "pub_grub/version_union"
require "pub_grub/version_solver"
require "pub_grub/incompatibility"
require 'pub_grub/solve_failure'
require 'pub_grub/failure_writer'

require "logger"

module PubGrub
  class << self
    attr_accessor :logger
  end
  self.logger = Logger.new(STDERR)
  self.logger.level = $DEBUG ? Logger::DEBUG : Logger::WARN
end