lib/bootsnap/setup.rb
require_relative('../bootsnap') env = ENV['RAILS_ENV'] || ENV['RACK_ENV'] || ENV['ENV'] development_mode = ['', nil, 'development'].include?(env) cache_dir = ENV['BOOTSNAP_CACHE_DIR'] unless cache_dir config_dir_frame = caller.detect do |line| line.include?('/config/') end unless config_dir_frame $stderr.puts("[bootsnap/setup] couldn't infer cache directory! Either:") $stderr.puts("[bootsnap/setup] 1. require bootsnap/setup from your application's config directory; or") $stderr.puts("[bootsnap/setup] 2. Define the environment variable BOOTSNAP_CACHE_DIR") raise("couldn't infer bootsnap cache directory") end path = config_dir_frame.split(/:\d+:/).first path = File.dirname(path) until File.basename(path) == 'config' app_root = File.dirname(path) cache_dir = File.join(app_root, 'tmp', 'cache') end Bootsnap.setup( cache_dir: cache_dir, development_mode: development_mode, load_path_cache: true, autoload_paths_cache: true, # assume rails. open to PRs to impl. detection disable_trace: false, compile_cache_iseq: true, compile_cache_yaml: true, )