When using buildpack API 0.8 or greater, the platform directory and build plan path are provided as environment variables to buildpack bin/detect, in addition to the deprecated positional arguments (https://github.com/buildpacks/lifecycle/pull/818)
When using buildpack API 0.8 or greater, the platform directory, buildpack plan path, and buildpack layers directory are provided as environment variables to buildpack bin/build, in addition to the deprecated positional arguments (https://github.com/buildpacks/lifecycle/pull/818)