如何为 Xcode 项目升级 Circle CI 2.0 上的 ruby​​ 版本？

Question

I sat the config.yml and .ruby-version to upgrade ruby.

But I got an error message unknown Ruby: ruby-2.6.2

It used the ruby-2.3, and It has no problems.

How can I set ruby 2.6.2 with config.yml?

config.yml

defaults: &defaults
    macos:
      xcode: "10.0"
    shell: /bin/bash --login -eo pipefail
aliases:
  - &prepare
    | 
      git submodule update --init --recursive
      gem install bundler
      bundle install
  - &filter-only-master
    branches:
      only:
        - master

version: 2
jobs:
  ios:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: bundle exec rake test:ios
      - run: bash <(curl -s https://codecov.io/bash)
      - store_test_results:
          path: build/reports
  macos:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: bundle exec rake test:macos
      - run: bash <(curl -s https://codecov.io/bash)
      - store_test_results:
          path: build/reports
  facebook_utils:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: bundle exec rake test:facebook_utils:ios
      - run: bash <(curl -s https://codecov.io/bash)
      - store_test_results:
          path: build/reports
  twitter_utils:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: bundle exec rake test:twitter_utils:ios
      - run: bash <(curl -s https://codecov.io/bash)
      - store_test_results:
          path: build/reports
  parseui:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: bundle exec rake test:parseui:all
  deployment:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: |
            xcrun simctl create "Apple TV 1080p" com.apple.CoreSimulator.SimDeviceType.Apple-TV-1080p com.apple.CoreSimulator.SimRuntime.tvOS-11-0
            bundle exec rake package:release
  jazzy:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: ./Scripts/jazzy.sh
  carthage:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: bundle exec rake test:carthage
  cocoapods:
    <<: *defaults
    steps:
      - checkout
      - run: *prepare
      - run: bundle exec rake test:cocoapods

workflows:
  version: 2
  pr:
    jobs:
      - ios
      - macos
      - facebook_utils
      - twitter_utils
      - parseui
      - jazzy
  nightly:
    jobs:
      - deployment
      - cocoapods:
          requires:
            - deployment
      - carthage:
          requires:
            - deployment
    triggers:
      - schedule:
          cron: "0 1 * * *"
          filters: *filter-only-master

.ruby-version

ruby-2.6.2

I get an error message below

#!/bin/bash --login -eo pipefail
git submodule update --init --recursive
gem install bundler
bundle install
^D^Dchruby: unknown Ruby: ruby-2.6.2
Exited with code 1

Answer 1

In CircleCI 2.0 you need to check which ruby versions are installed for the specific macOS container image that you are building with.

Our macOS containers contain multiple versions of Ruby. The default version is the system-installed Ruby. The containers also include the latest stable versions of Ruby at the time that the container is built. We determine the stable versions of Ruby using the Ruby-Lang.org downloads page. The version of Ruby that are installed in each image are listed in the software manifests of each container. https://circleci.com/docs/2.0/testing-ios/#using-custom-ruby-versions

Since you are building in Xcode 10. The macOS container image 10.0.0: Xcode 10.0 (Build 10A255) , ruby versions 2.3.7, 2.4.4, 2.5.1 are available to chruby.