class Bundler::Source::Path::Installer

def generate_bin
  super
  if Bundler.requires_sudo?
    SharedHelpers.filesystem_access(@gem_bin_dir) do |p|
      Bundler.mkdir_p(p)
    end
    spec.executables.each do |exe|
      Bundler.sudo "cp -R #{@bin_dir}/#{exe} #{@gem_bin_dir}"
    end
  end
end

def initialize(spec, options = {})
  @spec               = spec
  @gem_dir            = Bundler.rubygems.path(spec.full_gem_path)
  @wrappers           = true
  @env_shebang        = true
  @format_executable  = options[:format_executable] || false
  @build_args         = options[:build_args] || Bundler.rubygems.build_args
  @gem_bin_dir        = "#{Bundler.rubygems.gem_dir}/bin"
  @disable_extentions = options[:disable_extensions]
  if Bundler.requires_sudo?
    @tmp_dir = Bundler.tmp(spec.full_name).to_s
    @bin_dir = "#{@tmp_dir}/bin"
  else
    @bin_dir = @gem_bin_dir
  end
end

def post_install
  SharedHelpers.chdir(@gem_dir) do
    run_hooks(:pre_install)
    unless @disable_extentions
      build_extensions
      run_hooks(:post_build)
    end
    generate_bin unless spec.executables.nil? || spec.executables.empty?
    run_hooks(:post_install)
  end
ensure
  Bundler.rm_rf(@tmp_dir) if Bundler.requires_sudo?
end

def run_hooks(type)
  hooks_meth = "#{type}_hooks"
  return unless Gem.respond_to?(hooks_meth)
  Gem.send(hooks_meth).each do |hook|
    result = hook.call(self)
    next unless result == false
    location = " at #{$1}" if hook.inspect =~ /@(.*:\d+)/
    message = "#{type} hook#{location} failed for #{spec.full_name}"
    raise InstallHookError, message
  end
end