refactor workspace initializer

motivation: workspace initializer is very robust, accomodating the needs of both libSwiftPM consumer and testing. we want to seperate these concerns a bit so that libSwiftPM exposes the minimum API surface area

changes:
* deprecate existing workspace inisitlazer
* create new minimalistic public initializer oriented towards libSwiftPM consumers
* create internal initializer with all custmization options oriented towards testing
* better abstract resolver configuraiton and other behavior settings into a struct
* update callsite and tests to the new API

Sources/Commands/SwiftTool.swift

@@ -662,7 +662,7 @@ public class SwiftTool {
         }
 
         let delegate = ToolWorkspaceDelegate(self.outputStream, logLevel: self.logLevel, observabilityScope: self.observabilityScope)
-        let provider = GitRepositoryProvider(processSet: processSet)
+        let provider = GitRepositoryProvider(processSet: self.processSet)
         let sharedSecurityDirectory = try self.getSharedSecurityDirectory()
         let sharedCacheDirectory = try self.getSharedCacheDirectory()
         let sharedConfigurationDirectory = try self.getSharedConfigurationDirectory()
@@ -677,16 +677,18 @@ public class SwiftTool {
                 sharedCacheDirectory: sharedCacheDirectory,
                 sharedConfigurationDirectory: sharedConfigurationDirectory
             ),
-            mirrors: self.getMirrorsConfig(sharedConfigurationDirectory: sharedConfigurationDirectory).mirrors,
             registries: try self.getRegistriesConfig(sharedConfigurationDirectory: sharedConfigurationDirectory).configuration,
             authorizationProvider: self.getAuthorizationProvider(),
-            customManifestLoader: self.getManifestLoader(), // FIXME: doe we really need to customize it?
-            customRepositoryProvider: provider, // FIXME: doe we really need to customize it?
-            additionalFileRules: isXcodeBuildSystemEnabled ? FileRuleDescription.xcbuildFileTypes : FileRuleDescription.swiftpmFileTypes,
-            resolverUpdateEnabled: !options.skipDependencyUpdate,
-            resolverPrefetchingEnabled: options.shouldEnableResolverPrefetching,
-            resolverFingerprintCheckingMode: self.options.resolverFingerprintCheckingMode,
-            sharedRepositoriesCacheEnabled: self.options.useRepositoriesCache,
+            mirrors: self.getMirrorsConfig(sharedConfigurationDirectory: sharedConfigurationDirectory).mirrors,
+            resolutionConfiguration: ResolutionConfiguration(
+                updateEnabled: !options.skipDependencyUpdate,
+                prefetchingEnabled: options.shouldEnableResolverPrefetching,
+                additionalFileRules: isXcodeBuildSystemEnabled ? FileRuleDescription.xcbuildFileTypes : FileRuleDescription.swiftpmFileTypes,
+                sharedRepositoriesCacheEnabled: self.options.useRepositoriesCache,
+                fingerprintCheckingMode: self.options.resolverFingerprintCheckingMode
+            ),
+            customManifestLoader: self.getManifestLoader(), // FIXME: ideally we would not customize the manifest loader
+            customRepositoryProvider: provider, // FIXME: ideally we would not customize the repository provider. its currently done for shutdown handling which can be better abstracted
             delegate: delegate
         )
         _workspace = workspace

Sources/SPMTestSupport/MockWorkspace.swift

@@ -27,10 +27,10 @@ public final class MockWorkspace {
     public var registryClient: RegistryClient
     public let archiver: MockArchiver
     public let checksumAlgorithm: MockHashAlgorithm
-    public let fingerprintStorage: MockPackageFingerprintStorage
     let roots: [MockPackage]
     let packages: [MockPackage]
     public let mirrors: DependencyMirrors
+    public let fingerprints: MockPackageFingerprintStorage
     let identityResolver: IdentityResolver
     public var manifestLoader: MockManifestLoader
     public var repositoryProvider: InMemoryGitRepositoryProvider
@@ -42,15 +42,15 @@ public final class MockWorkspace {
     public init(
         sandbox: AbsolutePath,
         fileSystem: InMemoryFileSystem,
-        mirrors: DependencyMirrors? = nil,
         roots: [MockPackage],
         packages: [MockPackage],
         toolsVersion: ToolsVersion = ToolsVersion.currentToolsVersion,
-        customHttpClient: HTTPClient? = .none,
-        customRegistryClient: RegistryClient? = .none,
-        customBinaryArchiver: MockArchiver? = .none,
-        customChecksumAlgorithm: MockHashAlgorithm? = .none,
-        customFingerprintStorage: MockPackageFingerprintStorage? = .none,
+        mirrors customMirrors: DependencyMirrors? = nil,
+        fingerprints customFingerprints: MockPackageFingerprintStorage? = .none,
+        httpClient customHttpClient: HTTPClient? = .none,
+        registryClient customRegistryClient: RegistryClient? = .none,
+        binaryArchiver customBinaryArchiver: MockArchiver? = .none,
+        checksumAlgorithm customChecksumAlgorithm: MockHashAlgorithm? = .none,
         resolverUpdateEnabled: Bool = true
     ) throws {
         let archiver = customBinaryArchiver ?? MockArchiver()
@@ -61,8 +61,8 @@ public final class MockWorkspace {
         self.httpClient = httpClient
         self.archiver = archiver
         self.checksumAlgorithm = customChecksumAlgorithm ?? MockHashAlgorithm()
-        self.fingerprintStorage = customFingerprintStorage ?? MockPackageFingerprintStorage()
-        self.mirrors = mirrors ?? DependencyMirrors()
+        self.fingerprints = customFingerprints ?? MockPackageFingerprintStorage()
+        self.mirrors = customMirrors ?? DependencyMirrors()
         self.identityResolver = DefaultIdentityResolver(locationMapper: self.mirrors.effectiveURL(for:))
         self.roots = roots
         self.packages = packages
@@ -73,7 +73,7 @@ public final class MockWorkspace {
             identityResolver: self.identityResolver,
             checksumAlgorithm: self.checksumAlgorithm,
             filesystem: self.fileSystem,
-            fingerprintStorage: self.fingerprintStorage
+            fingerprintStorage: self.fingerprints
         )
         self.registryClient = customRegistryClient ?? self.registry.registryClient
         self.toolsVersion = toolsVersion
@@ -220,7 +220,7 @@ public final class MockWorkspace {
             return workspace
         }
 
-        let workspace = try Workspace(
+        let workspace = try Workspace._init(
             fileSystem: self.fileSystem,
             location: .init(
                 workingDirectory: self.sandbox.appending(component: ".build"),
@@ -230,7 +230,15 @@ public final class MockWorkspace {
                 sharedCacheDirectory: self.fileSystem.swiftPMCacheDirectory,
                 sharedConfigurationDirectory: self.fileSystem.swiftPMConfigDirectory
             ),
+            fingerprints: self.fingerprints,
             mirrors: self.mirrors,
+            resolutionConfiguration: ResolutionConfiguration(
+                updateEnabled: self.resolverUpdateEnabled,
+                prefetchingEnabled: true,
+                additionalFileRules: ResolutionConfiguration.default.additionalFileRules,
+                sharedRepositoriesCacheEnabled: ResolutionConfiguration.default.sharedRepositoriesCacheEnabled,
+                fingerprintCheckingMode: .strict
+            ),
             customToolsVersion: self.toolsVersion,
             customManifestLoader: self.manifestLoader,
             customRepositoryProvider: self.repositoryProvider,
@@ -239,10 +247,6 @@ public final class MockWorkspace {
             customHTTPClient: self.httpClient,
             customArchiver: self.archiver,
             customChecksumAlgorithm: self.checksumAlgorithm,
-            customFingerprintStorage: self.fingerprintStorage,
-            resolverUpdateEnabled: self.resolverUpdateEnabled,
-            resolverPrefetchingEnabled: true,
-            resolverFingerprintCheckingMode: .strict,
             delegate: self.delegate
         )