RepoPilot

openai/tart

macOS and Linux VMs on Apple Silicon to use in CI and other automations

Healthy

Healthy across all four use cases

HealthyDependency

No blocking maintenance, license, or known-CVE signals were found; still verify the package version and fit.

HealthyFork & modify

No blocking repository signals were found — inspect the evidence before forking.

HealthyLearn from

Documented and popular — useful reference codebase to read through.

HealthyDeploy as-is

No blocking repository-level signals were found; deployment review is still required.

  • ⚠Scorecard: default branch unprotected (0/10)
  • ✓Last commit today
  • ✓17 active contributors
  • ✓Distributed ownership (top contributor 43% of recent commits)
  • ✓Apache-2.0 licensed
  • ✓CI configured
  • ✓Tests present

Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

Informational only. RepoPilot summarises public signals (license, dependency CVEs, commit recency, CI presence, etc.) at the time of analysis. Signals can be incomplete or stale. Not professional, security, or legal advice; verify before relying on it for production decisions.

Repository brief

Repo brief: openai/tart

Generated by RepoPilot · document generated 2026-09-16 · concise human review Evidence snapshot · analyzed 2026-09-16T03:49:39.397Z · commit cdb3579c7930

Verdict

Healthy — Healthy across all four use cases

  • Last commit today
  • 17 active contributors
  • Distributed ownership (top contributor 43% of recent commits)
  • Apache-2.0 licensed
  • 2 more receipts on the live page

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

What it is

Tart is a virtualization toolset built on macOS's Virtualization.Framework that enables building, running, and managing macOS and Linux VMs on Apple Silicon with near-native performance. It integrates with OCI-compatible container registries for push/pull of VM images and provides a Packer plugin for automated VM creation, designed specifically for CI/automation workflows. Mixed Swift/Go architecture: Sources/tart contains the main Swift CLI with modular Commands/ subdirectory (Clone.swift, Create.swift, Exec.swift, etc.), CI integration logic in CI/CI.swift, and resource bundles for UI assets. The integration/ module shows Go tooling for telemetry/gRPC. Package.swift indicates Swift…

Start here

Open these first:

  • Package.swift — Defines Swift package structure, dependencies, and build targets for the entire Tart CLI tool.
  • Sources/tart/Commands/Run.swift — Core command handler for executing VMs; entry point for the primary user workflow.
  • Sources/tart/OCI/Manifest.swift — Handles OCI image manifest parsing and serialization for container registry operations.
  • Sources/tart/DiskImageStack.swift — Manages layered disk image abstractions central to VM snapshot and cloning functionality.
  • Sources/tart/ContentStore.swift — Implements storage and retrieval of VM images and layers from local and remote registries.

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

Clone the repository, then build using Swift Package Manager. Assuming Swift is available: git clone https://github.com/openai/tart && cd tart && swift build (SPM build evident from Package.swift presence). For usage…

Daily commands:

Build with Swift: swift build. Run the CLI with swift run tart <command>. The README example shows post-install: tart clone ghcr.io/cirruslabs/macos-tahoe-base:latest tahoe-base && tart run tahoe-base. Requires Ap…

…shortened for this brief.

Key cautions & unknowns

  • Scorecard: default branch unprotected (0/10)
  • Apple Silicon-only: Tart requires macOS 13.0 (Ventura) or later and Apple Silicon hardware; x86 Macs are not supported. Virtualization.Framework is privileged: the tool likely requires special entitlements (visible in…
  • Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

For the complete agent context, use the CLAUDE.md or Cursor rules export.

Save as

Full context for agent files, or a concise PDF for human review.

View complete agent reference

Open to load every section of the agent reference.

Want this for your own repo?

Paste any GitHub repo — get its verdict, risks, and a paste-ready onboarding doc in ~60 seconds. Free, no sign-up.

Embed the "Healthy" badge

Paste into your README — live-updates from the latest cached analysis.

Variant:
RepoPilot: Healthy
[![RepoPilot: Healthy](https://repopilot.app/api/badge/openai/tart)](https://repopilot.app/r/openai/tart)

Paste at the top of your README.md — renders inline like a shields.io badge.

▸Preview social card

This card auto-renders when someone shares https://repopilot.app/r/openai/tart on X, Slack, or LinkedIn.

Ask AI about cirruslabs/tart

Grounded in the actual source code. Pick a starter question or write your own.

What does this repo do, in one paragraph?How would I get started using it?What are the main alternatives?Show me the entry point.
Or write your own question

Similar Swift repos

Other healthy-signal Swift repos by stars.

Recent Q&A

Public conversations other people have had about this repo.

Embed this chat in your README

Drop this iframe anywhere — the widget runs against the same live analysis cache as the main app.

<iframe
  src="https://repopilot.app/embed/cirruslabs/tart"
  width="100%" height="500"
  style="border:1px solid #d0d7de; border-radius:8px;"
  allow="microphone"
  loading="lazy"
></iframe>