Swift Package Manager 🚀

[pchmelar]

📝 Description

• Swift Package Manager (SPM) has been around for some time and clearly it is the way we want to go in the future. This PR propose needed changes in order to use it for all current dependencies.

💡 What’s new?

• CocoaPods removed 🪦
• All main dependencies installed via SPM 🚀
• Mint used for tools. More info in this article. 🌱
• All scripts refactored accordingly
• With CocoaPods gone we can also get rid of Gems. Now it will be used only for fastlane and twine. Fastlane is used only on the CI, so it can be managed there. And twine is updated very sporadically, so there is not much point in versioning.
• Flipper has no support for the SPM and there are no indications it will be implemented soon. Proxyman seems like an adequate replacement with more features, continuous development and support for SPM.

😶 What’s missing?

• SPM still have problem with multi target dependencies, therefore RxSwift doesn't work properly (RxTest at the moment). None of the workarounds worked for me. We have to wait until this bug is resolved.
• Build Phase for Firebase Crashlytics works with this "hack" - it can break in the future releases of SPM

📚 References

• https://getstream.io/blog/migrate-cocoapods-to-spm/
• https://stackoverflow.com/questions/57625952/consume-swift-package-for-multiple-targets-and-platforms-in-a-project
• https://github.com/firebase/firebase-ios-sdk/blob/master/SwiftPackageManager.md

[tommassbrand]

I see that PR is WIP but you requested code review. I see lot of commented code.
So it is finished for now? :) @pchmelar

[pchmelar]

It is not finished, I have to resolve all the issues from What’s missing?, but I wanted to create the PR anyway so you can take a look 🙂. Guess I should not add you as reviewers until it is ready, sorry for that, my bad.

[pchmelar]

SPM still have problems with multi target dependencies, therefore RxSwift doesn't work properly (RxTest at the moment). None of the workarounds worked for me. We have to wait until this bug is resolved.

[tommassbrand]

this bug

So we will hope that this will be fixed ASAP :)
Otherwise, the other code is ready for code review? @pchmelar

[pchmelar]

I added the RxTest code directly into the DevStackTests target.
It is working, but of course it's not ideal, because with every RxSwift update we have to update it manually.
We will use it through SPM when fixed - related issue