Warning when building app with _.id or _.version in project.toml

[josegonzalez]

Summary

When building an app with a project.toml that contains either _.id or _.version, I get the following warning

Warning: The following keys declared in project.toml are not supported in schema version 0.2:
Warning: - _.id
Warning: - _.version
Warning: The above keys will be ignored. If this is not intentional, try updating your schema version.

The project-descriptor spec says both are valid: https://github.com/buildpacks/spec/blob/main/extensions/project-descriptor.md

This worked in a previous version in August (apologies, don't know the version I had then of pack).

Potentially related: #2155

---

Reproduction

Steps

1. Create a project.toml for an app.
2. Add either a _.id or _.version field to the project.toml
3. Run pack build app:latest

Current behavior

The error message I displayed above is shown.

Expected behavior

No error messages, as per spec.

---

Environment

pack info

Pack:
  Version:  0.34.2+git-ce8db3c.build-6005
  OS/Arch:  darwin/arm64

Default Lifecycle Version:  0.19.6

Supported Platform APIs:  0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12, 0.13

Config:
  default-builder-image = "[REDACTED]"

docker info

Client:
 Version:    26.1.3
 Context:    orbstack
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.14.1
    Path:     /Users/josediazgonzalez/.docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.27.3
    Path:     /Users/josediazgonzalez/.docker/cli-plugins/docker-compose
  composercmd: Docker Compose (Docker Inc.)
    Version:  v2.21.0
    Path:     /Users/josediazgonzalez/.docker/cli-plugins/docker-composercmd

Server:
 Containers: 1
  Running: 0
  Paused: 0
  Stopped: 1
 Images: 15
 Server Version: 26.1.4
 Storage Driver: overlay2
  Backing Filesystem: btrfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: ae71819c4f5e67bb4d5ae76a6b735f29cc25774e
 runc version: 58aa9203c123022138b22cf96540c284876a7910
 init version: de40ad0
 Security Options:
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.9.6-orbstack-00147-gb0567c7c0069
 Operating System: OrbStack
 OSType: linux
 Architecture: aarch64
 CPUs: 10
 Total Memory: 15.59GiB
 Name: orbstack
 ID: 3ecf303e-f331-4f08-83ae-e5f492b3836f
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false
 Product License: Community Engine
 Default Address Pools:
   Base: 192.168.215.0/24, Size: 24
   Base: 192.168.228.0/24, Size: 24
   Base: 192.168.247.0/24, Size: 24
   Base: 192.168.207.0/24, Size: 24
   Base: 192.168.167.0/24, Size: 24
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   Base: 172.17.0.0/16, Size: 16
   Base: 172.18.0.0/16, Size: 16
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   Base: 172.20.0.0/14, Size: 16
   Base: 172.24.0.0/14, Size: 16
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