Guardfile

guard :rspec, cmd: 'bundle exec rspec' do
  watch(%r{^spec/.+_spec\.rb$})
  watch(%r{^lib/(.+)\.rb$})     { |m| "spec/lib/#{m[1]}_spec.rb" }
  watch(%r{^app/(.+)\.rb$})     { |m| "spec/app/#{m[1]}_spec.rb" }
  watch('spec/spec_helper.rb')  { "spec" }
end

guard :bundler do
  require 'guard/bundler'
  require 'guard/bundler/verify'
  helper = Guard::Bundler::Verify.new

  files = ['Gemfile']
  files += Dir['*.gemspec'] if files.any? { |f| helper.uses_gemspec?(f) }

  # Assume files are symlinked from somewhere
  files.each { |file| watch(helper.real_path(file)) }
end