[RFC 0134] Execution Environments

[jjbustamante]

[RFC 0134] Execution Environments

Summary

This issue tracks the implementation of RFC 0134: Execution Environments across the Platform and Buildpack API specifications.

RFC 0134 introduces support for multiple execution environments (production, test, development) to allow buildpacks to adapt their behavior based on the target environment. This enables use cases like including test dependencies only when building for testing, or optimizing builds differently for development vs production.

Related Links

• RFC: https://github.com/buildpacks/rfcs/blob/main/text/0134-execution-environments.md
• Buildpack API PR: [Buildpack API] - Add Execution Enviroment definition #415
• Platform API PR: [Platform API] - Add Execution Environment definition #416

cc @jkutner @natalieparellano @sambhav @jabrown85 @hone