Automatic version management using agvtool

Question

Xcode 11 has changed the way that versions are handled.

So far I had two targets, Dev & Prod, each with a separate versions. Prod version would be entirely manual, Dev would be automated:

• During a build, a script would run, which then would fetch git tags. One tag would contain information about the latest Dev version. If it's newer, it would update version inside Info.plist just for the Dev target
• When Dev would be deployed using a script (create an ipa, resign for in-house distribution, upload), the build version would then be increased. Remote tag containing version information would then be updated

In this way everyone's dev version would get automatically synchronized and managing multiple dev builds would be be easy. Prod would be updated relatively infrequently so it can be managed manually.

However, in Xcode 11 whenver version (or build) is updated inside the General tab, entries in Info.plist are replaced with $(CURRENT_PROJECT_VERSION) and $(MARKETING_VERSION) and Current Project Version and Marketing Version inside the build settings tab is used instead.

So far I would use PlistBuddy in order to read and update versions inside Info.plist, but from what understand now I'd have to use agvtool. However, there are two issues with it:

• If it's ran as a Run Script phase, it causes the build process to cancel
• It is unable to handle separate versions for two targets (so I cannot just automatically manage Dev, while leaving Prod alone)

I know that theoretically I can still use Info.plist for versioning, but the moment someone changes version manually in the General tab, the whole thing will get messed up (from experience I know that this will happen).

I have two questions:

• Is my understanding of the process correct?
• Can still have a version management system using agvtool similar to what I had before?