+add Distributed Actors

[ktoso]

Pull Request Description

Now that swift 5.7 is stable we really should be testing the distributed actors cluster because it is the large codebase pushing both swift concurrency and the distributed feature.

https://github.com/apple/swift-distributed-actors

This requires 5.7 so we need to add that Swuft support... not entirely sure how to do that, will reach out to someone.

Acceptance Criteria

To be accepted into the Swift source compatibility test suite, a project must:

• be an Xcode or swift package manager project
• support building on either Linux or macOS
• target Linux, macOS, or iOS/tvOS/watchOS device
• be contained in a publicly accessible git repository
• maintain a project branch that builds against Swift 4.0 and passes any unit tests
  • it uses language features which require 5.7, so that's the minimum version
• have maintainers who will commit to resolve issues in a timely manner
• be compatible with the latest GM/Beta versions of Xcode and swiftpm
• add value not already included in the suite
• be licensed with one of the following permissive licenses:
  • Apache License, version 2.0
• pass ./project_precommit_check script run
  • TODO

[ktoso]

@swift-ci please test

[shahmishal]

DistributedActorsTestKit/ActorTestKit.swift:16:18: error: module 'DistributedCluster' was not compiled for testing
@testable import DistributedCluster
~~~~~~~~~~       ^

Is this known failure?

[ktoso]

Hm, I thought I handled that by

         "configuration": "debug",

🤔

But I can also make it such that we don't need that testable import, I'll look into it.

[ktoso]

@swift-ci please test

[ktoso]

@swift-ci please test

[justice-adams-apple]

@ktoso 👋 Adding

         "configuration": "debug",

to the projects.json sets the default when and end-user doesn't override the build config via the cmd-line. In pr testing we use
--build-config=release

And in our nightly CI we have jobs for both debug and release builds, so we'll need the project to build with both configurations.

If you need to compile tests as part of your build_portion, add "build_tests": "true", to your build action, e.g.

      {
        "action": "BuildSwiftPackage",
        "configuration": "debug",
        "build_tests": "true",
        "tags": "sourcekit-disabled swiftpm"
      },

*You will likely need to merge main into your branch for this to work as this is relatively new functionality.

[ktoso]

Thanks @justice-adams-apple , actually this is resolved I just need to bump the commit we point at I noticed.

Worse though, there is a regression in Swift that makes the library crash, I'm looking into it rdar://104583893 and will re-request tests/inclusion here.

[ktoso]

Okey this should work fine I hope! We also fixed the regression now in Swift itself that this maybe could have helped prevent.

PASS: swift-distributed-actors, 5.7, e024c1, Swift Package
========================================
Action Summary:
     Passed: 1
     Failed: 0
    XFailed: 0
    UPassed: 0
      Total: 1
========================================
Repository Summary:
      Total: 1
========================================
Result: PASS
========================================
--- swift-distributed-actors checked successfully against Swift 5.7 ---

[ktoso]

@swift-ci please test

[ktoso]

Sweet, thanks!