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* Give Virtualization.framework a chance to stop the VM on tart stop We were letting the CancellationError bubble up all the way until it terminated app, which meant we didn't hit the shutdown code in run(), stopping the VM and the network. We now catch CancellationError and proceed to gracefully shut down. We only stop the VM if it's still running, as a VM that has been stopped via the menu can't be stopped again. * Gracefully shut down VM when Tart is quit via menu Normally the quit action will result in AppKit calling exit(), but we want to gracefully shut down the VM, so we use the same path as for closing of the VM window, namely signal our own process with SIGINT or SIGUSR1. If that doesn't work we let AppKit terminate as before. This fixes the "Warning: NSActivity <_NSActivityAssertion: 0x600001f785a0> was ended multiple times" warning seen on the console when quitting Tart via the menu. * Activate Tart after application finishes launching This ensures that the VM window has been shown by the time we activate, so that we consistently activate and bring the VM window to the front.
Tart is a virtualization toolset to build, run and manage macOS and Linux virtual machines (VMs) on Apple Silicon. Built by CI engineers for your automation needs. Here are some highlights of Tart:
- Tart uses Apple's own
Virtualization.Frameworkfor near-native performance. - Push/Pull virtual machines from any OCI-compatible container registry.
- Use Tart Packer Plugin to automate VM creation.
- Easily integrates with any CI system.
Tart powers Cirrus Runners service — a drop-in replacement for the standard GitHub-hosted runners, offering 2-3 times better performance for a fraction of the price.
Many companies are using Tart in their internal setups. Here are a few of them:
Note: If your company or project is using Tart please consider adding yourself to the list above.
Usage
Try running a Tart VM on your Apple Silicon device running macOS 13.0 (Ventura) or later (will download a 25 GB image):
brew install cirruslabs/cli/tart
tart clone ghcr.io/cirruslabs/macos-sonoma-base:latest sonoma-base
tart run sonoma-base
Please check the official documentation for more information and/or feel free to use discussions for remaining questions.