This is obviously the best solution for Rust. A 'metalibrary' library type would add a lot of value to the ecosystem as a nexus: - All included crates can be

This is obviously the best solution for Rust. A 'metalibrary' library type would add a lot of value to the ecosystem as a nexus: - All included crates can be tested for inter-compatibility - Release all included crates under a single version, simplifying upgrades - Sample projects as living documentation to demo integrations and upgrades - Breaking changes can be held until all affected crates are fixed, then bump all at once - An achievable, valuable, local goal for code review / crev coverage metrics There could be general "everything and the kitchen sink" metalibraries, metalibraries targeted at particular domains or industries, metalibraries with different standards for stability or code review, etc. It might even be valuable enough to sell support and consulting...