SimReady tier: Foundation Tier-Isaac

A separately-publishable wheel containing the Isaac Sim slice of SimReady foundation validation: the isaac_sim capabilities (composition, robot core, robot materials) plus the isaac-facing features and profiles that compose them on top of the core tier.

Distribution: simready-foundation-tier-isaac. It depends on the core tier (simready-foundation-tier-core), so installing it pulls the base in:

pip install simready.validate
pip install simready-foundation-tier-isaac   # brings in simready-foundation-tier-core

What's in it

• Capabilities: isaac_sim/{composition, robot_core, robot_materials} (owns ISA.001, RC.*, RM.*).
• Features: the isaac robot-core / driven-joints / composition features (FET021, FET022_*_ISAAC, FET100), the robot-core runnable variant (FET021_ROBOT_CORE_RUNNABLE, which reuses RC.*), FET023_ROBOT_MATERIALS.
• Profiles: prop_robotics_isaac, robot_body_isaac, robot_body_runnable.

These reference core-owned requirements and features (e.g. DJ.*, the neutral / physx base features) across the wheel boundary; the SimReady loader registers all tiers' requirements, then all features, then all profiles, so those cross-tier references resolve regardless of install order.

Layout

The tier is an ordinary Python package: its content is committed under simready/foundation/tier_isaac/ and ships as-is. The only build-time step is generating the requirements-enum module (codegen), which is shared by every tier and lives in ../_tooling.

simready_foundation_tier_isaac/
├── pyproject.toml          # distribution metadata + both entry points + build config
├── README.md
└── simready/foundation/tier_isaac/   # committed package
    ├── __init__.py, _plugin.py, _tier.py        # generic scaffolding
    ├── capabilities/                            # isaac_sim/* + import hub
    ├── features/                                # feature JSON
    └── profiles/                                # profile TOML

At build time, codegen adds the one missing piece — requirements/ — into the wheel:

simready/foundation/tier_isaac/
├── … (the committed files above)
└── requirements/           # generated requirement enums (codegen) — NOT committed

Discovery surfaces

The built wheel advertises itself two ways:

• usd_validation_nvidia → simready.foundation.tier_isaac:SimReadyPlugin — the asset validator auto-discovers this tier's validators (rules + requirements).
• simready.tier → simready.foundation.tier_isaac:tier — the SimReady loader discovers this tier's per-layer content sources (requirements module + features/profiles dirs) for its layered registration.

Building

# from the repo root
./repo.sh build_tiers

repo build_tiers writes the wheel into this tier's _build/dist/.