Epic: Starlark SDK

[droot]

• Map out the requirements for the Starlark SDK

[mengqiy]

Some items in #2504 (comment) may be related.

[yuwenma]

Tasks:

• [feat]scaffolding: Starlark function generator #2392
• [docs] Re-write kpt.dev starlark guide
• [feat] Define test framework if users contribute to kpt catalog.
• [feat] make resource_list.items as strong typed objects (protobuf). This only supports the k8s API types.
• [feat] Support structured results in the starlark function #2201
• [feat] include-file function #2350 include-file function (may need a different design than what is proposed)
• [refactor/feat] Simplify UX. Currently provides three different ways to call starlark file, we can simplify the UX once include-file is done.
• [feat] Provide the kyaml equivalent library that starlark users can load. the Library functions shall be aligned with go SDK library

Bugs:

• Starlark fn interprets arguments as numbers when possible and reformats them #2487

Extensions:

• [feat] Support loading KCC as builtin strong typed object (protobuf).
• [feat] Support loading customers CRD as builtin strong typed object (protobuf).

[natasha41575]

[feat] Provide the kyaml equivalent library that starlark users can load. the Library functions shall be aligned with go SDK library

As part of this, we should provide a GVKN matching function, e.g. isGVKN(r, "v1", "ConfigMap", "gcloud-config.kpt.dev") would greatly simplify the starlark function for the value propagation task.

[bgrant0607]

Could we merge this issue and #2504?