Fix default main actor isolation.

Author: mbrandonw

Package.swift

@@ -4,9 +4,9 @@ import CompilerPluginSupport
 import PackageDescription
 
 #if canImport(FoundationEssentials)
-  import FoundationEssentials
+import FoundationEssentials
 #else
-  import Foundation
+import Foundation
 #endif
 
 let package = Package(
@@ -93,14 +93,14 @@ let package = Package(
       exclude: ["Symbolic Links/README.md"]
     ),
 
-    .target(
-      name: "StructuredQueriesSQLite",
-      dependencies: [
-        "StructuredQueries",
-        "StructuredQueriesSQLiteCore",
-        "StructuredQueriesSQLiteMacros",
-      ]
-    ),
+      .target(
+        name: "StructuredQueriesSQLite",
+        dependencies: [
+          "StructuredQueries",
+          "StructuredQueriesSQLiteCore",
+          "StructuredQueriesSQLiteMacros",
+        ]
+      ),
     .target(
       name: "StructuredQueriesSQLiteCore",
       dependencies: [
@@ -116,14 +116,14 @@ let package = Package(
       ]
     ),
 
-    .target(
-      name: "StructuredQueriesTestSupport",
-      dependencies: [
-        "StructuredQueriesCore",
-        .product(name: "CustomDump", package: "swift-custom-dump"),
-        .product(name: "InlineSnapshotTesting", package: "swift-snapshot-testing"),
-      ]
-    ),
+      .target(
+        name: "StructuredQueriesTestSupport",
+        dependencies: [
+          "StructuredQueriesCore",
+          .product(name: "CustomDump", package: "swift-custom-dump"),
+          .product(name: "InlineSnapshotTesting", package: "swift-snapshot-testing"),
+        ]
+      ),
     .testTarget(
       name: "StructuredQueriesMacrosTests",
       dependencies: [
@@ -146,12 +146,12 @@ let package = Package(
       ]
     ),
 
-    .target(
-      name: "_StructuredQueriesSQLite",
-      dependencies: [
-        "StructuredQueriesSQLite"
-      ]
-    ),
+      .target(
+        name: "_StructuredQueriesSQLite",
+        dependencies: [
+          "StructuredQueriesSQLite"
+        ]
+      ),
   ],
   swiftLanguageModes: [.v6]
 )
@@ -184,23 +184,23 @@ for index in package.targets.indices {
 }
 
 #if !canImport(Darwin)
-  package.targets.append(
-    .systemLibrary(
-      name: "_StructuredQueriesSQLite3",
-      providers: [.apt(["libsqlite3-dev"])]
-    )
+package.targets.append(
+  .systemLibrary(
+    name: "_StructuredQueriesSQLite3",
+    providers: [.apt(["libsqlite3-dev"])]
   )
+)
 
-  for index in package.targets.indices {
-    if package.targets[index].name == "_StructuredQueriesSQLite" {
-      package.targets[index].dependencies.append("_StructuredQueriesSQLite3")
-    }
+for index in package.targets.indices {
+  if package.targets[index].name == "_StructuredQueriesSQLite" {
+    package.targets[index].dependencies.append("_StructuredQueriesSQLite3")
   }
+}
 #endif
 
 #if !os(Windows)
-  // Add the documentation compiler plugin if possible
-  package.dependencies.append(
-    .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.4.0")
-  )
+// Add the documentation compiler plugin if possible
+package.dependencies.append(
+  .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.4.0")
+)
 #endif

Sources/StructuredQueriesMacros/TableMacro.swift

@@ -1474,7 +1474,7 @@ extension TableMacro: MemberMacro {
       }
       """,
       """
-      public struct Selection: \(moduleName).TableExpression {
+      public nonisolated struct Selection: \(moduleName).TableExpression {
       public typealias QueryValue = \(type.trimmed)
       public let allColumns: [any \(moduleName).QueryExpression]
       \(selectionInitializers, separator: "\n")