Is it possible to author something like a Component that can be used in all languages? Would you have to write something like that in Go?

There is a way to do this! Generally referred to as MLCs (Multi-Language Components): https://www.pulumi.com/blog/pulumiup-pulumi-packages-multi-language-components/

Oh wow, I could author them in Python?? Finally! That is so cool thank you for sending me this! Do you happen to know if this is commonly done / well supported?

It is! The entire

eks

component library is built this way 🙂

Dude this is so sick!