gRPC-Core 1.14.0 和 1.14.1 的 pod 更新问题

Question

我的 Podfile 看起来像这样

platform :ios, '11.2'

target 'live-quiz' do
    use_frameworks!
    pod 'Fabric'
    pod 'Crashlytics'
    pod 'Kingfisher'
    pod 'Alamofire'
    pod 'youtube-ios-player-helper'
    pod 'Firebase/Core'
    pod 'Firebase/Auth'
    pod 'Firebase/Firestore'
    pod 'Firebase/Database'
    pod 'Firebase/Messaging'
    pod 'Firebase/Storage'
    pod 'CodableFirebase'
    pod 'FBSDKLoginKit'
    pod 'CountryPickerSwift'
    pod 'lottie-ios'
    pod 'SwiftySound'
end

之前我可以毫无问题地运行 pod update，但今天运行 pod update 之后

Analyzing dependencies
[!] CocoaPods could not find compatible versions for pod "Firebase/Core":
  In Podfile:
    Firebase/Core

Specs satisfying the `Firebase/Core` dependency were found, but they required a higher minimum deployment target.
CocoaPods could not find compatible versions for pod "GoogleUtilities/AppDelegateSwizzler":
  In Podfile:
    Firebase/Core was resolved to 5.8.0, which depends on
      FirebaseAnalytics (= 5.1.2) was resolved to 5.1.2, which depends on
        GoogleUtilities/AppDelegateSwizzler (~> 5.2.0)

Specs satisfying the `GoogleUtilities/AppDelegateSwizzler (~> 5.2.0)` dependency were found, but they required a higher minimum deployment target.
CocoaPods could not find compatible versions for pod "gRPC-Core":
  In Podfile:
    Firebase/Firestore was resolved to 5.8.0, which depends on
      FirebaseFirestore (= 0.13.3) was resolved to 0.13.3, which depends on
        gRPC-C++ (~> 0.0.3) was resolved to 0.0.3, which depends on
          gRPC-C++/Implementation (= 0.0.3) was resolved to 0.0.3, which depends on
            gRPC-Core (= 1.14.0)

    Firebase/Firestore was resolved to 5.8.0, which depends on
      FirebaseFirestore (= 0.13.3) was resolved to 0.13.3, which depends on
        gRPC-ProtoRPC (~> 1.0) was resolved to 1.14.1, which depends on
          gRPC-ProtoRPC/Main (= 1.14.1) was resolved to 1.14.1, which depends on
            gRPC (= 1.14.1) was resolved to 1.14.1, which depends on
              gRPC/Main (= 1.14.1) was resolved to 1.14.1, which depends on
                gRPC-Core (= 1.14.1)

看起来 gRPC-C++/Implementation 中的 gRPC-Core 和 gRPC/Main 使用不同版本（1.14.0、1.14.1）如何解决这个问题？

Answer 1

请重新运行

pod update

他们修好了。请查看： https ://github.com/firebase/firebase-ios-sdk/issues/1845

解决了导致 CocoaPods 错误的 Firebase/Core 依赖项问题。（＃1845，＃8110）