Fix copy-pasta, and use plugin on install instead of foreman

README.md

@@ -63,7 +63,7 @@ The `tailwindcss:build` task is automatically attached to the `test:prepare` Rak
 While you're developing your application, you want to run Tailwind in "watch" mode, so changes are automatically reflected in the generated CSS output. You can do this by:
 
 - running `rails tailwindcss:watch` as a separate process,
-- or by running `./bin/dev` which uses [foreman](https://github.com/ddollar/foreman) to start both the Tailwind watch process and the rails server in development mode.
+- or by using the puma plugin
 
 If you are running `rails tailwindcss:watch` on a system that doesn't fully support file system events, pass a `poll` argument to the task to instruct tailwindcss to instead use polling: `rails tailwindcss:watch[poll]`. If you use `bin/dev` then you should modify your `Procfile.dev`.
 

lib/install/tailwindcss.rb

@@ -38,19 +38,8 @@
   copy_file "#{__dir__}/application.tailwind.css", "app/assets/stylesheets/application.tailwind.css"
 end
 
-if Rails.root.join("Procfile.dev").exist?
-  append_to_file "Procfile.dev", "css: bin/rails tailwindcss:watch\n"
-else
-  say "Add default Procfile.dev"
-  copy_file "#{__dir__}/Procfile.dev", "Procfile.dev"
-
-  say "Ensure foreman is installed"
-  run "gem install foreman"
-end
-
-say "Add bin/dev to start foreman"
-copy_file "#{__dir__}/dev", "bin/dev"
-chmod "bin/dev", 0755, verbose: false
+say "Add puma plugin"
+append_to_file "config/puma.rb", %(plugin :tailwindcss if Rails.env.development?)
 
 say "Compile initial Tailwind build"
 run "rails tailwindcss:build"

lib/puma/plugin/tailwindcss.rb

@@ -4,24 +4,22 @@
   attr_reader :puma_pid, :tailwind_pid, :log_writer
 
   def start(launcher)
-    return unless Rails.env.development?
-
     @log_writer = launcher.log_writer
     @puma_pid = $$
     @tailwind_pid = fork do
       Thread.new { monitor_puma }
       system(*Tailwindcss::Commands.watch_command)
     end
 
-    launcher.events.on_stopped { stop_solid_queue }
+    launcher.events.on_stopped { stop_tailwind }
 
     in_background do
       monitor_tailwind
     end
   end
 
   private
-    def stop_solid_queue
+    def stop_tailwind
       Process.waitpid(tailwind_pid, Process::WNOHANG)
       log "Stopping tailwind..."
       Process.kill(:INT, tailwind_pid) if tailwind_pid