At the moment, the jsii toolchain covers the process until a generated code package in all supported programming languages. This leaves the actual build to users, which is unneeded since this is boilerplate that needs to be implemented by all users.

The toolchains required for all languages is expected to be installed on your system (and we will create a docker image that contains all of them).

A few other things to consider:

1. What is the post-build publishing story? Perhaps this is actually part of the "packaging" stage.
2. We need to also make sure that the development environment for contributors doesn't require the entire toolchain because that will become a barrier for contributors. Perhaps the actual multi-language build will only happen during "pack" and contributors can just utilize our build servers to do that for them instead of having to install the entire toolchain.
3. It should be possible to also deprecate a package across all package managers.