M4 Pro runners for GitHub Actions are now generally available at no extra cost! All existing customers have been migrated and should see 30-40% faster builds. 🚀. Our fixed pricing means we’re motivated to make builds faster (no per-minute billing!)⚡️.

Or inside of a macOS VM via 🤓🍏.

RT @abhi16_93: Do you run GitHub self-hosted runners?. How do you manage them in production across provisioning, autoscaling, job isolation….

RT @polpielladev: 👀 FREE Webinar happening this evening!. Join me to discuss the role of CI/CD and automation in checking AI-generated code….

RT @polpielladev: 📆 New FREE webinar for iOS CI Newsletter subscribers!. Join me on Monday as I discuss the importance of solid CI/CD in th….

Introducing Chamber 🚀 . Problem: AI coding agents with permissive flags are vulnerable to prompt injection and can harm you system. Solution: Run them in disposable macOS virtual machines. $: chamber claude. ✅ Isolated execution inside an ephemeral VM.✅ Current directory.

Still not fast enough 🤷‍♂️ And costs a fortune 💸.

Interesting to see that both @OpenAI Codes CLI and @Google Gemini CLI uses native sandboxing on macOS. Back in 2018 when we were adding macOS to our CI platform we were considering using sandboxing in combination with @nixos_org to create secure reproducible environments for CI.

RT @_eseidel: What do you use for CI/CD with Flutter and Dart? Do you like your setup? What would you like improved?.

RT @tiagodhenriques: iOS Coffee Break - issue #49 is up! 🤗 The most exciting week of the year for iOS devs has officially ended and I have….

RT @steipete: Which MCP servers do you find useful for Claude Code?.

.@GoogleCloud is down. Cirrus CI is down too but Cirrus Runners are holding for now. 🔥🚒.

Check out notable changes in Virtualization.Framework on macOS Tahoe 🍏. We are looking for supporting Apple Sparse Image Format to make Tart VMs much smaller. #WWDC25.

RT @brianmichel: What if you could schedule macOS VMs with Nomad.

Happy #WWDC25 Day 2! What was your favorite announcement from yesterday?. Xcode Beta is now available to all Cirrus Runners customers. To celebrate WWDC week, we offer a 50% discount for the first three months (while releases are in beta). Use code WWDC50 when setting up your

As usual, try macOS Tahoe in a Tart virtual machine without worrying to destroy your physical machine:. brew install cirruslabs/cli/tart .tart clone tahoe .tart run tahoe

Happy Monday! As usual we rolled out the latest Xcode 16.4 over the weekend. Next Monday is WWDC and we’ll try to get Xcode 17 or 26 out ASAP off the regular weekend schedule. What are we all looking for from #WWDC? 🍏💻.

We’ve just launched the Tart Guest Agent — a lightweight bridge that lets your macOS VMs talk back to the host. Execute shell scripts without SSH access, dynamically change disk size and soon more. 👉

We make new versions of Xcode (even betas) available the next weekend of the release date. 👌 All thanks to our leading virtualization solution called Tart that allows to use Docker registries for the distribution and Packer integration to automate it.

RT @igrrik: I remember when upgrading CI machines for a new macOS or Xcode release was tedious and cumbersome. It's impressive how Tart sim….

Congrats! @emergetools were one of the first companies to adopt Tart for their macOS virtualization needs. And we are using @getsentry ourselves for error reporting in Tart. Looking forward to what this synergy will bring.