Does postcss listen for dir-dependency messages in watch mode?

[nareshbhatia]

I am running postcss in watch mode. One of the plugins that it's running is tailwindcss. I know that tailwindcss sends dependency and dir-dependency messages when its dependencies change. However, I am not seeing postcss being retriggered when they actually change. What am I missing?

Here's my minimal repo: https://github.com/nareshbhatia/tailwindcss-storybook

Here are the relevant scripts in package.json. Running npm run dev starts up storybook, the bundler and postcss in watch mode:

{
  "scripts": {
    "dev": "run-p bundle generate-css storybook",
    "bundle": "tsup src/index.ts --format esm,cjs --dts --external react --watch",
    "generate-css": "postcss src/styles/tailwind.css -o public/main.css --watch",
    "storybook": "start-storybook -p 6006"
  }
}

For further details, please see this discussion in tailwind repo.