Swift 6 language mode readiness and bump dependencies

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 
 //
 // This source file is part of the Stanford Spezi open-source project
@@ -12,12 +12,6 @@ import class Foundation.ProcessInfo
 import PackageDescription
 
 
-#if swift(<6)
-let strictConcurrency: SwiftSetting = .enableExperimentalFeature("StrictConcurrency")
-#else
-let strictConcurrency: SwiftSetting = .enableUpcomingFeature("StrictConcurrency")
-#endif
-
 let package = Package(
     name: "SpeziFHIR",
     defaultLocalization: "en",
@@ -31,14 +25,14 @@ let package = Package(
         .library(name: "SpeziFHIRMockPatients", targets: ["SpeziFHIRMockPatients"])
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/FHIRModels", .upToNextMinor(from: "0.5.0")),
-        .package(url: "https://github.com/StanfordBDHG/HealthKitOnFHIR", .upToNextMinor(from: "0.2.4")),
-        .package(url: "https://github.com/StanfordSpezi/Spezi", from: "1.2.1"),
-        .package(url: "https://github.com/StanfordSpezi/SpeziHealthKit.git", .upToNextMinor(from: "0.5.1")),
-        .package(url: "https://github.com/StanfordSpezi/SpeziLLM.git", .upToNextMinor(from: "0.8.1")),
-        .package(url: "https://github.com/StanfordSpezi/SpeziStorage.git", from: "1.0.0"),
-        .package(url: "https://github.com/StanfordSpezi/SpeziChat.git", .upToNextMinor(from: "0.2.0")),
-        .package(url: "https://github.com/StanfordSpezi/SpeziSpeech.git", from: "1.0.0")
+        .package(url: "https://github.com/apple/FHIRModels", .upToNextMinor(from: "0.6.0")),
+        .package(url: "https://github.com/StanfordBDHG/HealthKitOnFHIR", .upToNextMinor(from: "0.2.11")),
+        .package(url: "https://github.com/StanfordSpezi/Spezi", from: "1.8.0"),
+        .package(url: "https://github.com/StanfordSpezi/SpeziHealthKit", .upToNextMinor(from: "0.6.0")),
+        .package(url: "https://github.com/StanfordSpezi/SpeziLLM", .upToNextMinor(from: "0.8.4")),
+        .package(url: "https://github.com/StanfordSpezi/SpeziStorage", from: "1.2.1"),
+        .package(url: "https://github.com/StanfordSpezi/SpeziChat", .upToNextMinor(from: "0.2.1")),
+        .package(url: "https://github.com/StanfordSpezi/SpeziSpeech", from: "1.1.0")
     ] + swiftLintPackage(),
     targets: [
         .target(
@@ -49,9 +43,6 @@ let package = Package(
                 .product(name: "ModelsDSTU2", package: "FHIRModels"),
                 .product(name: "HealthKitOnFHIR", package: "HealthKitOnFHIR")
             ],
-            swiftSettings: [
-                strictConcurrency
-            ],
             plugins: [] + swiftLintPlugin()
         ),
         .target(
@@ -61,9 +52,6 @@ let package = Package(
                 .product(name: "HealthKitOnFHIR", package: "HealthKitOnFHIR"),
                 .product(name: "SpeziHealthKit", package: "SpeziHealthKit")
             ],
-            swiftSettings: [
-                strictConcurrency
-            ],
             plugins: [] + swiftLintPlugin()
         ),
         .target(
@@ -81,9 +69,6 @@ let package = Package(
             resources: [
                 .process("Resources")
             ],
-            swiftSettings: [
-                strictConcurrency
-            ],
             plugins: [] + swiftLintPlugin()
         ),
         .target(
@@ -95,19 +80,13 @@ let package = Package(
             resources: [
                 .process("Resources")
             ],
-            swiftSettings: [
-                strictConcurrency
-            ],
             plugins: [] + swiftLintPlugin()
         ),
         .testTarget(
             name: "SpeziFHIRTests",
             dependencies: [
                 .target(name: "SpeziFHIR")
             ],
-            swiftSettings: [
-                strictConcurrency
-            ],
             plugins: [] + swiftLintPlugin()
         )
     ]

Sources/SpeziFHIR/Extensions/FHIR+Identifiable.swift

@@ -9,9 +9,9 @@
 import ModelsR4
 
 
-extension Resource: Identifiable {
+extension Resource: @retroactive Identifiable {
     public typealias ID = FHIRPrimitive<FHIRString>?
 }
 
 
-extension FHIRPrimitive: Identifiable where PrimitiveType: Identifiable { }
+extension FHIRPrimitive: @retroactive Identifiable where PrimitiveType: Identifiable { }

Sources/SpeziFHIR/FHIRStore.swift

@@ -14,11 +14,14 @@ import enum ModelsDSTU2.ResourceProxy
 import Spezi
 
 
-/// Module to manage FHIR resources grouped into automatically computed and updated categories.
+/// `Module` to manage FHIR resources grouped into automatically computed and updated categories.
 ///
 /// The ``FHIRStore`` is automatically injected in the environment if you use the ``FHIR`` standard or can be used as a standalone module.
 @Observable
-public class FHIRStore: Module, EnvironmentAccessible, DefaultInitializable {
+public final class FHIRStore: Module,
+                              EnvironmentAccessible,
+                              DefaultInitializable,
+                              @unchecked Sendable /* `unchecked` `Sendable` conformance fine as access to `_resources` protected by `NSLock` */ {
     private let lock = NSLock()
     @ObservationIgnored private var _resources: [FHIRResource]
 

Sources/SpeziFHIRLLM/FHIRInterpretation/MultipleResources/FHIRGetResourceLLMFunction.swift

@@ -48,13 +48,31 @@ struct FHIRGetResourceLLMFunction: LLMFunction {
     }
 
 
+    private static func filterFittingResources(_ fittingResources: [FHIRResource]) -> [FHIRResource] {
+        Self.logger.debug("Overall fitting Resources: \(fittingResources.count)")
+
+        var fittingResources = fittingResources
+
+        if fittingResources.count > 64 {
+            fittingResources = fittingResources.lazy.sorted(by: { $0.date ?? .distantPast < $1.date ?? .distantPast }).suffix(64)
+            Self.logger.debug(
+                """
+                Reduced to the following 64 resources: \(fittingResources.map { $0.functionCallIdentifier }.joined(separator: ","))
+                """
+            )
+        }
+
+        return fittingResources
+    }
+
+
     func execute() async throws -> String? {
         var functionOutput: [String] = []
 
         try await withThrowingTaskGroup(of: [String].self) { outerGroup in
             // Iterate over all requested resources by the LLM
             for requestedResource in resources {
-                outerGroup.addTask {
+                outerGroup.addTask { @Sendable [fhirStore, resourceSummary] in
                     // Fetch relevant FHIR resources matching the resources requested by the LLM
                     var fittingResources = fhirStore.llmRelevantResources.filter { $0.functionCallIdentifier.contains(requestedResource) }
 
@@ -71,13 +89,14 @@ struct FHIRGetResourceLLMFunction: LLMFunction {
                     }
 
                     // Filter out fitting resources (if greater than 64 entries)
-                    fittingResources = filterFittingResources(fittingResources)
-
+                    fittingResources = Self.filterFittingResources(fittingResources)
                     try await withThrowingTaskGroup(of: String.self) { innerGroup in
                         // Iterate over fitting resources and summarizing them
                         for resource in fittingResources {
-                            innerGroup.addTask {
-                                try await summarizeResource(fhirResource: resource, resourceType: requestedResource)
+                            innerGroup.addTask { @Sendable [resourceSummary] in
+                                let summary = try await resourceSummary.summarize(resource: resource)
+                                Self.logger.debug("Summary of appended FHIR resource \(requestedResource): \(summary.description)")
+                                return String(localized: "This is the summary of the requested \(requestedResource):\n\n\(summary.description)")
                             }
                         }
 
@@ -97,27 +116,4 @@ struct FHIRGetResourceLLMFunction: LLMFunction {
 
         return functionOutput.joined(separator: "\n\n")
     }
-
-    private func summarizeResource(fhirResource: FHIRResource, resourceType: String) async throws -> String {
-        let summary = try await resourceSummary.summarize(resource: fhirResource)
-        Self.logger.debug("Summary of appended FHIR resource \(resourceType): \(summary.description)")
-        return String(localized: "This is the summary of the requested \(resourceType):\n\n\(summary.description)")
-    }
-
-    private func filterFittingResources(_ fittingResources: [FHIRResource]) -> [FHIRResource] {
-        Self.logger.debug("Overall fitting Resources: \(fittingResources.count)")
-
-        var fittingResources = fittingResources
-
-        if fittingResources.count > 64 {
-            fittingResources = fittingResources.lazy.sorted(by: { $0.date ?? .distantPast < $1.date ?? .distantPast }).suffix(64)
-            Self.logger.debug(
-                """
-                Reduced to the following 64 resources: \(fittingResources.map { $0.functionCallIdentifier }.joined(separator: ","))
-                """
-            )
-        }
-
-        return fittingResources
-    }
 }

Sources/SpeziFHIRLLM/FHIRInterpretation/MultipleResources/FHIRMultipleResourceInterpreter.swift

@@ -101,6 +101,7 @@ public class FHIRMultipleResourceInterpreter {
     }
 
     /// Change the `LLMSchema` used by the ``FHIRMultipleResourceInterpreter``.
+    @MainActor
     public func changeLLMSchema(
         openAIModel model: LLMOpenAIModelType,
         resourceCountLimit: Int,
@@ -123,7 +124,7 @@ public class FHIRMultipleResourceInterpreter {
         }
         self.llm = nil
 
-        Task { @MainActor in
+        Task {
             await prepareLLM()
         }
     }

Sources/SpeziFHIRLLM/FHIRInterpretation/SingleResource/FHIRResourceInterpreter.swift

@@ -14,7 +14,7 @@ import SpeziLocalStorage
 
 /// Responsible for interpreting FHIR resources.
 @Observable
-public class FHIRResourceInterpreter {
+public final class FHIRResourceInterpreter: Sendable {
     private let resourceProcessor: FHIRResourceProcessor<String>
 
 

Sources/SpeziFHIRLLM/FHIRInterpretationModule.swift

@@ -19,17 +19,17 @@ public class FHIRInterpretationModule: Module, DefaultInitializable {
         public static var llmSchema: LLMOpenAISchema {
             .init(
                 parameters: .init(
-                    modelType: .gpt4_turbo_preview,
+                    modelType: .gpt4_turbo,
                     systemPrompts: []   // No system prompt as this will be determined later by the resource interpreter
                 )
             )
         }
     }
 
 
-    @Dependency private var localStorage: LocalStorage
-    @Dependency private var llmRunner: LLMRunner
-    @Dependency private var fhirStore: FHIRStore
+    @Dependency(LocalStorage.self) private var localStorage
+    @Dependency(LLMRunner.self) private var llmRunner
+    @Dependency(FHIRStore.self) private var fhirStore
 
     @Model private var resourceSummary: FHIRResourceSummary
     @Model private var resourceInterpreter: FHIRResourceInterpreter
@@ -43,9 +43,9 @@ public class FHIRInterpretationModule: Module, DefaultInitializable {
 
 
     /// - Warning: Ensure that passed LLM schema's don't contain a system prompt! This will be configured by the ``FHIRInterpretationModule``.
-    public init<SummaryLLM: LLMSchema, InterpretationLLM: LLMSchema>(   // swiftlint:disable:this function_default_parameter_at_end
+    public init<SummaryLLM: LLMSchema, InterpretationLLM: LLMSchema>(
         summaryLLMSchema: SummaryLLM = Defaults.llmSchema,
-        interpretationLLMSchema: InterpretationLLM = Defaults.llmSchema,
+        interpretationLLMSchema: InterpretationLLM = Defaults.llmSchema,    // swiftlint:disable:this function_default_parameter_at_end
         multipleResourceInterpretationOpenAIModel: LLMOpenAIModelType,  // swiftlint:disable:this identifier_name
         resourceCountLimit: Int = 250,
         allowedResourcesFunctionCallIdentifiers: Set<String>? = nil // swiftlint:disable:this discouraged_optional_collection
@@ -62,7 +62,7 @@ public class FHIRInterpretationModule: Module, DefaultInitializable {
         self.init(
             summaryLLMSchema: Defaults.llmSchema,
             interpretationLLMSchema: Defaults.llmSchema,
-            multipleResourceInterpretationOpenAIModel: .gpt4_turbo_preview
+            multipleResourceInterpretationOpenAIModel: .gpt4_turbo
         )
     }
 

Sources/SpeziFHIRLLM/FHIRProcessor/FHIRResourceProcessor.swift

@@ -14,7 +14,8 @@ import SpeziLLMOpenAI
 import SpeziLocalStorage
 
 
-class FHIRResourceProcessor<Content: Codable & LosslessStringConvertible> {
+// Unchecked `Sendable` conformance is fine as storage is guarded by `NSLock`.
+final class FHIRResourceProcessor<Content: Codable & LosslessStringConvertible>: @unchecked Sendable {
     typealias Results = [FHIRResource.ID: Content]
 
 

Sources/SpeziFHIRLLM/FHIRSummary/FHIRResourceSummary.swift

@@ -14,9 +14,9 @@ import SpeziLocalStorage
 
 /// Responsible for summarizing FHIR resources.
 @Observable
-public class FHIRResourceSummary {
+public final class FHIRResourceSummary: Sendable {
     /// Summary of a FHIR resource emitted by the ``FHIRResourceSummary``.
-    public struct Summary: Codable, LosslessStringConvertible {
+    public struct Summary: Codable, LosslessStringConvertible, Sendable {
         /// Title of the FHIR resource, should be shorter than 4 words.
         public let title: String
         /// Summary of the FHIR resource, should be a single line of text.

Sources/SpeziFHIRLLM/Settings/FHIRPrompt.swift

@@ -10,7 +10,7 @@ import Foundation
 
 
 /// Handle dynamic, localized LLM prompts for FHIR resources.
-public struct FHIRPrompt: Hashable {
+public struct FHIRPrompt: Hashable, Sendable {
     /// Placeholder for FHIR resource in prompts.
     public static let fhirResourcePlaceholder = "{{FHIR_RESOURCE}}"
     /// Placeholder for the current locale in a prompt