Postcss 8 support

[abhaykeerthy12]

Describe the problem:

Tailwind 1.9.6 is not working with postcss-cli version 8, giving error : "Error: true is not a PostCSS plugin"

module.exports = { plugins: [ require("postcss-import"), require("tailwindcss")("tailwind.config.js"), require("autoprefixer") ] }

Link to a minimal reproduction:

Use this versions of postcss-cli, autoprefixer, and postcss-import to reproduce bug

"autoprefixer": "^10.0.1", "postcss-cli": "^8.1.0", "postcss-import": "^13.0.0", "tailwindcss": "^1.9.6",

And run this command, btw, i'm using angular

postcss src/theme/tailwind.css -o src/styles.css

[khatabwedaa]

You can use npx tailwindcss build src/theme/tailwind.css -o src/styles.css instead

[adamwathan]

Tailwind definitely works with PostCSS 8, it sounds like perhaps you forgot to install postcss when installing postcss-cli. Run npm install postcss and try again.

[adamwathan]

Here's a simple PostCSS 8 project that includes Tailwind and builds as expected:

https://github.com/adamwathan/postcss8-tailwind

Going to close as based on the original message it appears to me that the issue is just not adding postcss as a dependency, which is outlined as one of the installation steps for postcss-cli:

https://github.com/postcss/postcss-cli#install