Create a Makefile target simulating building for Library Evolution; a…

…ddress issues with Xcode 16 running it (#199)

* Add a Makefile target build-for-library-evolution

Replicates an issue I’m seeing in our project

* Update xctest-dynamic-overlay to 1.4.1

* Update swift-syntax

* Add param to build-for-library-evolution

* Corrects issue seen via `make build-for-library-evolution`

* Correct a small syntax error

* Add job to CI, covering Library Evolution Makefile target

* Revert to macos-14

.github/workflows/ci.yml

@@ -31,6 +31,23 @@ jobs:
  - name: Run tests
  run: make test-swift
 
+ macos-library-evolution:
+ name: macOS Library Evolution (Xcode ${{ matrix.xcode }})
+ runs-on: macos-latest
+ strategy:
+ matrix:
+ xcode:
+ - '15.4'
+ - '16.0'
+ steps:
+ - uses: actions/checkout@v4
+ - name: Select Xcode ${{ matrix.xcode }}
+ run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode }}.app
+ - name: Print Swift version
+ run: swift --version
+ - name: Build for Library Evolution
+ run: make build-for-library-evolution
+
  linux:
  strategy:
  matrix:

Makefile

@@ -17,6 +17,14 @@ test-swift:
  -c release \
  --parallel
 
+build-for-library-evolution:
+ swift build \
+ -c release \
+ --target CasePaths \
+ -Xswiftc -emit-module-interface \
+ -Xswiftc -enable-library-evolution \
+ -Xswiftc -DRESILIENT_LIBRARIES # Required to build swift-syntax; see https://github.com/swiftlang/swift-syntax/pull/2540
+
 format:
  swift format --in-place --recursive .
 

Package.resolved

@@ -42,17 +42,17 @@
  "kind" : "remoteSourceControl",
  "location" : "https://github.com/swiftlang/swift-syntax",
  "state" : {
- "revision" : "4c6cc0a3b9e8f14b3ae2307c5ccae4de6167ac2c",
- "version" : "600.0.0-prerelease-2024-06-12"
+ "revision" : "cb53fa1bd3219b0b23ded7dfdd3b2baff266fd25",
+ "version" : "600.0.0"
  }
  },
  {
  "identity" : "xctest-dynamic-overlay",
  "kind" : "remoteSourceControl",
  "location" : "https://github.com/pointfreeco/xctest-dynamic-overlay",
  "state" : {
- "revision" : "357ca1e5dd31f613a1d43320870ebc219386a495",
- "version" : "1.2.2"
+ "revision" : "27d767d643fa2cf083d0a73d74fa84cacb53e85c",
+ "version" : "1.4.1"
  }
  }
  ],

Sources/CasePathsMacros/CasePathableMacro.swift

@@ -292,6 +292,7 @@ extension AttributeListSyntax.Element {
  if let availability = ifConfig.availability {
  return .ifConfigDecl(availability)
  }
+ @unknown default: return nil
  }
  return nil
  }