Yeah, unfortunately, we don't have that. As far at the providers we build using tfbridge, https://github.com/pulumi/pulumi-openstack is probably the simplest one, so the history might be grockable. The pulumi-kubernetes provider is the first real one we've implemented by coding against our raw RPC interfaces, https://github.com/pulumi/pulumi-kubernetes/commit/e85e03360ab8b1657d47016b4d38365ebb30e077 was the initial commit where Alex started that work (previously it had built on top of tfbridge as well, but we were not satisfied with that implementation)