Yes, or maybe like this:

```Ruby
set :procfile_contents, -> {
  "web:" <<
  "chruby-exec #{fetch(:chruby_ruby)} -- " <<
  "bundle exec " <<
  "thin start " <<
  "-S /tmp/#{fetch(:app_name)}.thin-1.sock " <<
  "-e #{fetch(:stage)} "
}
```

Not sure what's most readable, and it's a minus that it isn't how the ruby-style-guide says.