[amai]

So instead of a Dockerfile we now need a builder.toml file. In addition you need a detect and build script: https://buildpacks.io/docs/create-buildpack/building-blocks-... Is this really a simplification?

[jacques_chester]

> Is this really a simplification?

Yes, because for end-user developers, you don't need any files. The files you mentioned are used by buildpack authors.