How to implement a plugin for a custom language?

[demurgos]

Hello,
I would like to use Yarn to install packages for the Haxe language. Are there any examples in how to add support for a custom language?

The closest I found is this MR to add CMake support but it seems to patch a lot of the core files and it's hard to find what are core components for custom language support.

[RDIL]

It's worth noting that that PR is roughly 2 years old at this point. The APIs have significantly improved since then.

To implement a new language as a plugin, you would need to add a fetcher and linker for the new language. I believe there is documentation on the matter.