I'm building out Trustfall[0] with most of the same goals in mind: query everything with a single composable syntax and fast performance, incrementally evolve the schema, and build up the types of objects it can understand and query into your own personal (or shared!) graph.

I recently gave a conference talk on how we use queries over Dockerfiles + project configuration + deployment info to triage bugs and prevent them from coming back at my workplace. An example query is "find Python projects whose pyproject.toml specifies Python 3.9 but which get deployed with a Dockerfile that installs Python 3.7 instead." Here's the talk link: https://www.hytradboi.com/2022/how-to-query-almost-everythin...

If you'd like to see Trustfall in action, I recently used it to build a Rust semver-checking tool[1] that's just a bunch of Trustfall queries like "find structs that used to be public but now aren't public anymore"[2] etc.

Trustfall definitely doesn't yet do everything I'd like it to (e.g. caching), and the Adapter API needs some more polish to improve ergonomics. But if you're interested in trying it out despite those caveats, I'd love to hear what you think!

[0]: https://github.com/obi1kenobi/trustfall

[1]: https://crates.io/crates/cargo-semver-checks

[2]: https://github.com/obi1kenobi/cargo-semver-check/blob/main/s... -- the query is in GraphQL syntax, you can copy-paste it into an editor to get syntax highlighting