The problem I have with GitHub Actions is that I usually want to metaprogram them. I have a monorepo and I want a particular action to run for each "project" su

The problem I have with GitHub Actions is that I usually want to metaprogram them. I have a monorepo and I want a particular action to run for each "project" subdirectory. I've written a program that generates GitHub Actions YAML files, but all of the ways to make sure the generator was run before each commit are fairly unsatisfying. The problem I have with infra-as-code tools is that what I really want is a pretty simple representation for "the state of the world" that some reconciliation can use, and then I want to generate that stuff in a typesafe, expression-based language like TypeScript or Python (Dhall exists, but its Haskell-like syntax and conventions are too steep a learning curve to get mainstream adoption). Instead we get CloudFormation and Terraform which shoehorn programming language constructs into a configuration language (which isn't strictly an objection to code-as-data generally) or things like Helm which uses text templates to generate a "state of the world" description or these CDKs which all seem to depend on a full JavaScript engine for reasons that don't make sense to me (why do I need JavaScript to generate configuration?).