check out https://github.com/lnussbaum/incant

Ah, that's neat as well.

I took a slightly different approach in that I don't want to use YAML as the authoritative source. Many projects abuse it, and end up creating a DSL on top of it with all sorts of hacks to achieve the flexibility of a programming language. Pulumi and Pyinfra already provide user-friendly primitives and idempotent(ish) APIs that work much better than YAML. I simply want to expose some (opinionated) building blocks to make them easy to use, and allow users to customize them and add their own as needed. E.g. I definitely don't want to write any shell scripts inside YAML. :)

BTW, Pulumi already supports YAML[1], which can be used with any provider. But to me it's too verbose and generic, and of course, it lacks the provisioning primitives.

[1]: https://www.pulumi.com/docs/iac/languages-sdks/yaml/