Flaky installation of GoogleAppMeasurement in 7.11 with SwiftPM

[ryanwilson]

[REQUIRED] Step 1: Describe your environment

• Xcode version: 12.5
• Firebase SDK version: 7.11.0
• Installation method: Swift Package Manager
• Firebase Component: Analytics

[REQUIRED] Step 2: Describe the problem

Steps to reproduce:

From a blank project in Xcode 12.5, attempt to add Firebase via SwiftPM.
Occasionally, this fails to reproduce with the message:

artifact of binary target 'GoogleAppMeasurement' failed extraction: The operation couldn't be completed. (TSCBasic.StringError error 1.)
artifact of binary target 'GoogleAppMeasurementWithoutAdIdSupport' failed extraction: The operation couldn't be completed. (TSCBasic.StringError error 1.)

Relevant Code:

No code needed, error occurs in Xcode during installation.

[ryanwilson]

This is likely the underlying implementation of the unzipping:
https://github.com/apple/swift-tools-support-core/blob/435a2708a6e486d69ea7d7aaa3f4ad243bc3b408/Sources/TSCUtility/Archiver.swift#L65

Will try to work off that and reproduce.

[ryanwilson]

Using the unzip command an extra directory __MACOSX shows up. I suspect this is due to an incorrect compression of the release artifacts, and Xcode gets confused when there are 2 XCFrameworks nested there. This could also explain the flakiness in that sometimes the proper XCFramework gets selected.

[ryanwilson]

7.11.1 for SwiftPM was released and this appears to be resolved.

[morganchen12]

@ryanwilson does this warrant a release note?

[ryanwilson]

@ryanwilson does this warrant a release note?

Probably - but let's hold off momentarily as I just had the issue happen again.

[paulb777]

This seems to have stabilized with some combination of recent Xcodes and Firebase releases. I'll close for now and we can reopen if it reoccurs.