It would be helpful if the puma plugin could permit configuration of the TailwindCSS watcher in debug mode (to generate non-minified output). It seems this is only possible when starting the watcher using rake task (and therefore also a Procfile).

The Puma configuration DSL plugin does not accept arguments other than the plug-in name, so this can't be implemented as: plugin :tailwindcss, :debug.

It could be done with an environment variable . (The plug-in already uses environment for TAILWINDCSS_INSTALL_DIR.)

A simple patch:

# lib/puma/plugin/tailwindcss.rb def start(launcher) debug = ["true", "1"].include? ENV["TAILWINDCSS_DEBUG"] # ... IO.popen(Tailwindcss::Commands.watch_command(debug: debug), 'r+') do |io| # ... end