CocoaPods could not find compatible versions for pod “Moya”

问题

My new project using swift 4.2 has below podFile:

pod 'Moya', '12.0.1'
pod 'SwiftyJSON', '4.0'
pod 'Moya-SwiftyJSONMapper'

Intalling using pod install --verbose shows error:

[!] CocoaPods could not find compatible versions for pod "Moya": In Podfile: Moya (= 12.0.1)

    Moya-SwiftyJSONMapper was resolved to 1.0.0, which depends on
      Moya-SwiftyJSONMapper/Core (= 1.0.0) was resolved to 1.0.0, which depends on
        Moya (~> 6.0.0)

CocoaPods could not find compatible versions for pod "SwiftyJSON":
  In Podfile:
    Moya-SwiftyJSONMapper was resolved to 1.0.3, which depends on
      Moya-SwiftyJSONMapper/Core (= 1.0.3) was resolved to 1.0.3, which depends on
        SwiftyJSON (~> 2.3.2)

    SwiftyJSON (= 4.0)

回答1:

Your pod version are not compatible with each other, this Podfile won't work.

But you can fix it.

But you have to check what podspecs of your pods to do this:

Moya-SwiftyJSONMapper: latest version of this pod is "3.0.0", and it depends on Moya, version 10.x and any version of SwiftyJSON.

So your version 4.0 of SwiftyJSON will be ok.

But you've specified that you want to install Moya version 12.0.1, which is not one of the 10.x version, so it is incompatible.

So you have to get rid of version 12.0.1 requirement, to make it all work.

pod 'Moya', '~> 10.0'

or just

pod 'Moya'

---

And, I think it's better to have Podfile with no version specified before first pod install. And only after auto-resolved combination of pods is installed you should freeze version requirements.

来源：https://stackoverflow.com/questions/53647891/cocoapods-could-not-find-compatible-versions-for-pod-moya