Fix compiling Package.swift without @preconcurrency import modifier i…

…n project generated by tuist edit (tuist#7333)
hiltonc · Feb 19, 2025 · 56961cf · 56961cf
1 parent 435ae3a
commit 56961cf
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Showing 3 changed files with 5 additions and 2 deletions.
diff --git a/Sources/TuistKit/ProjectEditor/ProjectEditorMapper.swift b/Sources/TuistKit/ProjectEditor/ProjectEditorMapper.swift
@@ -251,7 +251,9 @@ final class ProjectEditorMapper: ProjectEditorMapping {
             var packagesSettings = targetBaseSettings(
                 projectFrameworkPath: projectDescriptionPath,
                 pluginHelperLibraryPaths: pluginProjectDescriptionHelpersModule.map(\.path),
-                swiftVersion: swiftVersion
+                // We have no use of strict concurrency in the Packages targets, so we're opting into the Swift 5 language mode.
+                // Otherwise, `PackageDescription` must be imported with the `@preconcurrency` modifier
+                swiftVersion: Version(5, 0, 0).description
             )
             packagesSettings.merge(
                 [

diff --git a/Tests/TuistKitTests/ProjectEditor/ProjectEditorMapperTests.swift b/Tests/TuistKitTests/ProjectEditor/ProjectEditorMapperTests.swift
@@ -220,6 +220,7 @@ final class ProjectEditorMapperTests: TuistUnitTestCase {
                     "SWIFT_INCLUDE_PATHS": .array([
                         "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/pm/ManifestAPI",
                     ]),
+                    "SWIFT_VERSION": "5.0.0",
                 ],
                 uniquingKeysWith: {
                     switch ($0, $1) {

diff --git a/fixtures/app_with_spm_dependencies/Tuist/Package.swift b/fixtures/app_with_spm_dependencies/Tuist/Package.swift
@@ -1,5 +1,5 @@
 // swift-tools-version: 6.0
-@preconcurrency import PackageDescription
+import PackageDescription
 
 #if TUIST
     import ProjectDescription