Question about i18n in pages and app router

[omrimor]

First of all, I hope this is the correct place to ask the question. If not, please guide me to the correct place :)
I been a long time fan of the product and the fact you are open source is a source of inspiration so thank you!

I'm starting a migration from the pages router to the app router and since we have a lot of pages I wanted to build a migration story but running into a lot of problems with the i18n config in next.config.js and the fact that it don't play well with the app router - here.

I was looking at your cal.com app code and it looks like you have a working solution. I looked all over the code but could not find where the dynamic section of the pathname [lang] / [locale] is located to be able to accomplish it in the app router.

And when I tested it with the middleware I have conflicts and infinite redirects clashes between the i18n config setting and the middleware logic to try and make them work.

Any help will be greatly appreciated.