macOS Big Sur Preview Documentation

The purpose of this repository is to walk you through the details of the macOS Big Sur preview on CircleCI.

What are macOS Big Sur resources on CircleCI?

CircleCI offers a macOS executor that you can use to build and test macOS, iOS, watchOS, and tvOS applications. We support multiple Xcode versions through macOS executor images.

macOS Big Sur is the latest image for the macOS executor that’s now available in preview on the next generation macOS infrastructure.

The identifier of the Big Sur image is 12.5.1 and the identifier for the Big Sur resource is m2.medium. The Big Sur resource can only be used with a Big Sur macOS image.

NOTE: We have deprecated the 110.12.4 Big Sur image. Please use the 12.5.1 image instead.

Pricing and availability

The following macOS Big Sur resource class is available:

Resource class name	Specs	Plans on which the resource is available	Credits/Minute
m2.medium	4 vCPUs, 8GB RAM	Performance, Scale, Custom	75 cr/mn

Example of a CircleCI config using macOS Big Sur resources

# .circleci/config.yml
version: 2.1
jobs:
  build-and-test:
    macos:
      # reference the Big Sur + Xcode 12.5 preview image
      xcode: 12.5.1
    # use the Big Sur preview resource class
    resource_class: m2.medium
    environment:
      FL_OUTPUT_DIR: output
      FASTLANE_LANE: test
    steps:
      - checkout
      - run: bundle install
      - run:
          name: Fastlane
          command: bundle exec fastlane $FASTLANE_LANE
      - store_artifacts:
          path: output
      - store_test_results:
          path: output/scan

workflows:
  build-test:
    jobs:
      - build-and-test

How to provide feedback

Please open an issue with any feedback. The specific area where we would appreciate feedback:

• Software pre-installed in the image. Do you find everything you need in the image? Are there any bugs that you’ve noticed in the pre-installed software or operating system configuration?