Use Subprocess instead of Shwift

Drop Shwift: it is incompatible with musl (used by the Swift static
linking SDK), and its API is not meaningfully more concise than
Subprocess upon closer inspection.

.github/workflows/docs.yml

@@ -30,7 +30,7 @@ jobs:
     - name: Generate Docs
       run: |
         swift package add-dependency --from 1.4.0 "https://github.com/apple/swift-docc-plugin.git"
-        for target in Inotify TaskCLI; do
+        for target in Inotify InotifyTaskCLI; do
           lower="${target,,}"
           mkdir -p "./public/$lower"
           swift package --allow-writing-to-directory "./public/$lower" \
@@ -44,7 +44,7 @@ jobs:
         cp ./.github/workflows/index.tpl.html public/index.html
         sed -i -e 's/{{project.name}}/Swift Inotify/g' public/index.html
         sed -i -e 's/{{project.tagline}}/🗂️ Monitor filesystem events on Linux using modern Swift concurrency/g' public/index.html
-        sed -i -e 's|{{project.links}}|<li><a href="inotify/documentation/inotify/">Inotify</a>: The actual library.</li><li><a href="taskcli/documentation/taskcli/">TaskCLI</a>: The project build command.</li>|g' public/index.html
+        sed -i -e 's|{{project.links}}|<li><a href="inotify/documentation/inotify/">Inotify</a>: The actual library.</li><li><a href="inotifytaskcli/documentation/inotifytaskcli/">TaskCLI</a>: The project build command.</li>|g' public/index.html
     - name: Upload artifact
       uses: actions/upload-pages-artifact@v4
       with:

.spi.yml

@@ -2,3 +2,4 @@ version: 1
 builder:
   configs:
     - documentation_targets: [Inotify, TaskCLI]
+      platform: Linux

Package.resolved

@@ -1,5 +1,5 @@
 {
-  "originHash" : "fd1e824e418c767633bb79b055a4e84d9c86165746bc881d5d27457ad34b0c20",
+  "originHash" : "17ce26ba5c862ca674cd3ceeb43a9fe8a5c5251c5561de65e632a06d79916342",
   "pins" : [
     {
       "identity" : "noora",
@@ -33,17 +33,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/apple/swift-argument-parser",
       "state" : {
-        "revision" : "c5d11a805e765f52ba34ec7284bd4fcd6ba68615",
-        "version" : "1.7.0"
-      }
-    },
-    {
-      "identity" : "swift-async-algorithms",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-async-algorithms",
-      "state" : {
-        "revision" : "9d349bcc328ac3c31ce40e746b5882742a0d1272",
-        "version" : "1.1.3"
+        "revision" : "626b5b7b2f45e1b0b1c6f4a309296d1d21d7311b",
+        "version" : "1.7.1"
       }
     },
     {

Package.swift

@@ -8,15 +8,10 @@ let package = Package(
 		.library(
 			name: "Inotify",
 			targets: ["Inotify"]
-		),
-		.executable(
-			name: "task",
-			targets: ["TaskCLI"]
 		)
 	],
 	dependencies: [
-		.package(url: "https://github.com/apple/swift-argument-parser", from: "1.7.0"),
-		.package(url: "https://github.com/apple/swift-async-algorithms", from: "1.1.3"),
+		.package(url: "https://github.com/apple/swift-argument-parser", from: "1.7.1"),
 		.package(url: "https://github.com/apple/swift-log", from: "1.10.1"),
 		.package(url: "https://github.com/apple/swift-nio", from: "2.95.0"),
 		.package(url: "https://github.com/apple/swift-system", from: "1.6.4"),
@@ -42,14 +37,15 @@ let package = Package(
 			],
 		),
 		.executableTarget(
-			name: "TaskCLI",
+			name: "InotifyTaskCLI",
 			dependencies: [
 				.product(name: "ArgumentParser", package: "swift-argument-parser"),
-				.product(name: "AsyncAlgorithms", package: "swift-async-algorithms"),
 				.product(name: "Logging", package: "swift-log"),
+				.product(name: "_NIOFileSystem", package: "swift-nio"),
 				.product(name: "Subprocess", package: "swift-subprocess"),
 				.product(name: "Noora", package: "Noora")
-			]
+			],
+			path: "Sources/TaskCLI"
 		)
 	]
 )

README.md

@@ -75,6 +75,24 @@ try await inotify.addWatchWithAutomaticSubtreeWatching(
 
 This is the most convenient option when you need full coverage of a growing directory tree.
 
+## Excluding Items
+
+You can tell the `Inotify` actor to ignore certain file or directory names. Excluded names are skipped during recursive directory resolution (so no watch is installed on them) and silently dropped from the event stream:
+
+```swift
+let inotify = try Inotify()
+
+// Ignore version-control and build directories
+await inotify.exclude(names: ".git", "node_modules", ".build")
+
+try await inotify.addWatchWithAutomaticSubtreeWatching(
+    forDirectory: "/home/user/project",
+    mask: [.create, .modify, .delete]
+)
+```
+
+Use `isExcluded(_:)` to check whether a name is currently on the exclusion list.
+
 ## Event Masks
 
 `InotifyEventMask` is an `OptionSet` that mirrors the native inotify flags. You can combine them freely.
@@ -113,10 +131,15 @@ try inotify.removeWatch(wd)
 
 ## Build Tool
 
-The package ships with a `task` executable (the `TaskCLI` target) that serves as the project's build tool. It spins up a Docker container running `swift:latest` on Linux and executes the full test suite inside it, so you can validate everything on the correct platform even when developing on macOS.
+The package ships with a `task` executable (the `TaskCLI` target) that serves as the project's build tool. It automates running tests and generating documentation inside Linux Docker containers, so you can validate everything on the correct platform even when developing on macOS.
+Because of a Swift Package Manager Bug in the [package dependency resolution][swiftpm-bug], the executable needs to be run using the `task.sh` shell script.
+
+[swiftpm-bug]: https://github.com/swiftlang/swift-package-manager/issues/8482
+
+### Tests
 
 ```bash
-swift run task test
+./task.sh test
 ```
 
 Use `-v`, `-vv`, or `-vvv` to increase log verbosity. The command runs two passes: first all tests except `InotifyLimitTests`, then only `InotifyLimitTests` (which manipulate system-level inotify limits and need to run in isolation).
@@ -128,7 +151,7 @@ Docker must be installed and running on your machine.
 Full API documentation is available as DocC catalogs bundled with the package. Generate them locally with:
 
 ```bash
-swift run task generate-docs
+./task.sh generate-docs
 ```
 
 Then open the files in the newly created `public` folder.

Sources/Inotify/DirectoryResolver.swift

@@ -3,42 +3,35 @@ import _NIOFileSystem
 public struct DirectoryResolver {
 	static let fileManager = FileSystem.shared
 
-	public static func resolve(_ paths: String...) async throws -> [FilePath] {
-		try await Self.resolve(paths)
+	public static func resolve(_ paths: String..., excluding itemNames: Set<String> = []) async throws -> [FilePath] {
+		try await Self.resolve(paths, excluding: itemNames)
 	}
 
-	static func resolve(_ paths: [String]) async throws -> [FilePath] {
+	static func resolve(_ paths: [String], excluding itemNames: Set<String> = []) async throws -> [FilePath] {
 		var resolved: [FilePath] = []
 
 		for path in paths {
-			let itemPath = FilePath(path)
-			try await Self.ensure(itemPath, is: .directory)
-
-			let allDirectoriesIncludingSelf = try await getAllSubdirectoriesAndSelf(at: itemPath)
-			resolved.append(contentsOf: allDirectoriesIncludingSelf)
+			let path = FilePath(path)
+			resolved.append(path)
+			try await withSubdirectories(at: path, recursive: true) { subdirectoryPath in
+				guard let basename = subdirectoryPath.lastComponent?.description else { return }
+				guard !itemNames.contains(basename) else { return }
+				resolved.append(subdirectoryPath)
+			}
 		}
 
 		return resolved
 	}
 
-	private static func ensure(_ path: FilePath, is fileType: FileType) async throws {
-		guard let fileInfo = try await fileManager.info(forFileAt: path) else {
-			throw DirectoryResolverError.pathNotFound(path)
-		}
-
-		guard fileInfo.type == fileType else {
-			throw DirectoryResolverError.pathIsNoDirectory(path)
-		}
-	}
-
-	private static func getAllSubdirectoriesAndSelf(at path: FilePath) async throws -> [FilePath] {
-		var result: [FilePath] = []
+	private static func withSubdirectories(at path: FilePath, recursive: Bool = false, body: (FilePath) async throws -> Void) async throws {
 		let directoryHandle = try await fileManager.openDirectory(atPath: path)
-		for try await childContent in directoryHandle.listContents(recursive: true) {
+		for try await childContent in directoryHandle.listContents() {
 			guard childContent.type == .directory else { continue }
-			result.append(childContent.path)
+			try await body(childContent.path)
+			if recursive {
+				try await withSubdirectories(at: childContent.path, recursive: recursive, body: body)
+			}
 		}
 		try await directoryHandle.close()
-		return result
 	}
 }

Sources/Inotify/Inotify.docc/Inotify.md

@@ -20,6 +20,8 @@ Beyond single-directory watches, the library provides two higher-level methods f
 - ``Inotify/Inotify/addRecursiveWatch(forDirectory:mask:)`` installs watches on every existing subdirectory at setup time.
 - ``Inotify/Inotify/addWatchWithAutomaticSubtreeWatching(forDirectory:mask:)`` does the same **and** automatically watches subdirectories that are created after setup.
 
+You can also exclude certain file or directory names so that they are skipped during directory resolution and silently dropped from the event stream. See ``Inotify/Inotify/exclude(names:)`` and <doc:WatchingDirectoryTrees> for details.
+
 All public types conform to `Sendable`, so they can be safely passed across concurrency boundaries.
 
 ## Topics
@@ -30,6 +32,10 @@ All public types conform to `Sendable`, so they can be safely passed across conc
 - ``InotifyEvent``
 - ``InotifyEventMask``
 
+### Articles
+
+- <doc:WatchingDirectoryTrees>
+
 ### Errors
 
 - ``InotifyError``

Sources/Inotify/Inotify.docc/WatchingDirectoryTrees.md

@@ -33,6 +33,22 @@ let descriptors = try await inotify.addWatchWithAutomaticSubtreeWatching(
 
 Internally this listens for `CREATE` events carrying the ``InotifyEventMask/isDir`` flag and installs a new watch with the same mask whenever a subdirectory appears.
 
+### Excluding Directories
+
+When watching large trees you often want to skip certain subdirectories entirely — version-control metadata, build artefacts, dependency caches, and so on. Call ``Inotify/Inotify/exclude(names:)`` **before** adding a recursive or automatic-subtree watch:
+
+```swift
+let inotify = try Inotify()
+await inotify.exclude(names: ".git", "node_modules", ".build")
+
+try await inotify.addWatchWithAutomaticSubtreeWatching(
+    forDirectory: "/home/user/project",
+    mask: .allEvents
+)
+```
+
+Excluded names are matched against the last path component of each directory during resolution and are also filtered from the event stream, so you never receive events for items whose name is on the exclusion list.
+
 ### Choosing the Right Method
 
 | Method | Covers existing subdirectories | Covers new subdirectories |

Sources/Inotify/Inotify.swift

@@ -3,6 +3,7 @@ import CInotify
 
 public actor Inotify {
 	private let fd: CInt
+	private var excludedItemNames: Set<String> = []
 	private var watches = InotifyWatchManager()
 	private var eventReader: any DispatchSourceRead
 	private var eventStream: AsyncStream<RawInotifyEvent>
@@ -18,6 +19,24 @@ public actor Inotify {
 		(self.eventReader, self.eventStream) = Self.createEventReader(forFileDescriptor: fd)
 	}
 
+	public func isExcluded(_ name: String) -> Bool {
+		self.excludedItemNames.contains(name)
+	}
+
+	public func exclude(name: String) {
+		self.excludedItemNames.insert(name)
+	}
+
+	public func exclude(names: String...) {
+		self.exclude(names: names)
+	}
+
+	public func exclude(names: [String]) {
+		for name in names {
+			self.excludedItemNames.insert(name)
+		}
+	}
+
 	@discardableResult
 	public func addWatch(path: String, mask: InotifyEventMask) throws -> CInt {
 		let wd = inotify_add_watch(self.fd, path, mask.rawValue)
@@ -30,7 +49,7 @@ public actor Inotify {
 
 	@discardableResult
 	public func addRecursiveWatch(forDirectory path: String, mask: InotifyEventMask) async throws -> [CInt] {
-		let directoryPaths = try await DirectoryResolver.resolve(path)
+		let directoryPaths = try await DirectoryResolver.resolve(path, excluding: self.excludedItemNames)
 		var result: [CInt] = []
 		for path in directoryPaths {
 			let wd = try self.addWatch(path: path.string, mask: mask)
@@ -59,6 +78,7 @@ public actor Inotify {
 
 	private func transform(_ rawEvent: RawInotifyEvent) async -> InotifyEvent? {
 		guard let path = self.watches.path(forId: rawEvent.watchDescriptor) else { return nil }
+		guard !self.excludedItemNames.contains(rawEvent.name) else { return nil }
 		let event = InotifyEvent.init(from: rawEvent, inDirectory: path)
 		await self.addWatchInCaseOfAutomaticSubtreeWatching(event)
 		return InotifyEvent.init(from: rawEvent, inDirectory: path)

Sources/TaskCLI/Command.swift

@@ -4,6 +4,6 @@ import ArgumentParser
 struct Command: AsyncParsableCommand {
 	static let configuration = CommandConfiguration(
 		abstract: "Project tasks of Astzweig's Swift Inotify project.",
-		subcommands: [TestCommand.self, GenerateDocsCommand.self]
+		subcommands: [TestCommand.self, GenerateDocumentationCommand.self]
 	)
 }

Sources/TaskCLI/DoccFinder.swift

@@ -0,0 +1,25 @@
+import _NIOFileSystem
+
+public struct DoccFinder {
+	static let fileManager = FileSystem.shared
+
+	public static func hasDoccFolder(at path: String) async throws -> Bool {
+		let itemPath = FilePath(path)
+		var hasDoccFolder = false
+
+		try await withSubdirectories(at: itemPath) { subdirectory in
+			guard subdirectory.description.hasSuffix(".docc") else { return }
+			hasDoccFolder = true
+		}
+		return hasDoccFolder
+	}
+
+	private static func withSubdirectories(at path: FilePath, body: (FilePath) async throws -> Void) async throws {
+		let directoryHandle = try await fileManager.openDirectory(atPath: path)
+		for try await childContent in directoryHandle.listContents() {
+			guard childContent.type == .directory else { continue }
+			try await body(childContent.path)
+		}
+		try await directoryHandle.close()
+	}
+}

Sources/TaskCLI/Docker.swift

@@ -0,0 +1,9 @@
+struct Docker {
+	static func getLinuxPlatformStringWithHostArchitecture() -> String {
+		#if arch(x86_64)
+		return "linux/amd64"
+		#else
+		return "linux/arm64"
+		#endif
+	}
+}

Sources/TaskCLI/GenerateDocs Command.swift

@@ -1,178 +0,0 @@
-import ArgumentParser
-import AsyncAlgorithms
-import Foundation
-import Logging
-import Noora
-import Subprocess
-
-struct GenerateDocsCommand: AsyncParsableCommand {
-	static let configuration = CommandConfiguration(
-		commandName: "generate-docs",
-		abstract: "Generate DocC documentation inside a Linux container.",
-		aliases: ["gd"],
-	)
-
-	@OptionGroup var global: GlobalOptions
-
-	private static let doccPluginURL = "https://github.com/apple/swift-docc-plugin.git"
-	private static let doccPluginMinVersion = "1.4.0"
-	private static let targets = ["Inotify", "TaskCLI"]
-	private static let hostingBasePath = "swift-inotify"
-	private static let skipItems: Set<String> = [".git", ".build", ".swiftpm", "public"]
-
-	// MARK: - Run
-
-	func run() async throws {
-		let noora = Noora()
-		let logger = global.makeLogger(labeled: "swift-inotify.cli.task.generate-docs")
-		let fileManager = FileManager.default
-		let projectDirectory = URL(fileURLWithPath: fileManager.currentDirectoryPath)
-
-		noora.info("Generating DocC documentation on Linux.")
-		logger.debug("Current directory", metadata: ["current-directory": "\(projectDirectory.path(percentEncoded: false))"])
-
-		let tempDirectory = try copyProject(from: projectDirectory)
-		logger.info("Copied project to temporary directory.", metadata: ["path": "\(tempDirectory.path(percentEncoded: false))"])
-
-		defer {
-			try? fileManager.removeItem(at: tempDirectory)
-			logger.info("Cleaned up temporary directory.")
-		}
-
-		try await injectDoccPluginDependency(in: tempDirectory, logger: logger)
-		let script = Self.makeRunScript()
-
-		logger.debug("Container script", metadata: ["script": "\(script)"])
-		let dockerResult = try await Subprocess.run(
-			.name("docker"),
-			arguments: [
-				"run", "--rm",
-				"-v", "\(tempDirectory.path(percentEncoded: false)):/code",
-				"--platform", "linux/arm64",
-				"-w", "/code",
-				"swift:latest",
-				"/bin/bash", "-c", script,
-			],
-			preferredBufferSize: 10,
-		) { execution, standardInput, standardOutput, standardError in
-			print("")
-			let stdout = standardOutput.lines()
-			let stderr = standardError.lines()
-			for try await line in merge(stdout, stderr) {
-				noora.passthrough("\(line)")
-			}
-			print("")
-		}
-
-		guard dockerResult.terminationStatus.isSuccess else {
-			noora.error("Documentation generation failed.")
-			return
-		}
-
-		try copyResults(from: tempDirectory, to: projectDirectory)
-
-		noora.success(
-			.alert("Documentation generated successfully.",
-				takeaways: Self.targets.map {
-					"./public/\($0.lowercased())/"
-				}
-			)
-		)
-	}
-	
-	private static func generateDocsCommand() -> String {
-		Self.targets.map {
-			"swift package generate-documentation --target \($0)"
-		}.joined(separator: " && ")
-	}
-	
-	private static func transformDocsForStaticHostingCommand() -> String {
-		Self.targets.map { target in
-			let lowercased = target.lowercased()
-			return "docc process-archive transform-for-static-hosting" +
-				" $OUTPUTS/\(target).doccarchive" +
-				" --output-path ./public/\(lowercased)" +
-				" --hosting-base-path \(Self.hostingBasePath)/\(lowercased)"
-		}.joined(separator: " && ")
-	}
-	
-	private static func outputPathsForDocTargets() -> String {
-		Self.targets.map { "./public/\($0.lowercased())" }.joined(separator: " ")
-	}
-	
-	private static func makeRunScript() -> String {
-		let generateDocs = Self.generateDocsCommand()
-		let transformDocs = Self.transformDocsForStaticHostingCommand()
-		let outputDirs = Self.outputPathsForDocTargets()
-
-		return "set -euo pipefail && \(generateDocs)" +
-		" && OUTPUTS=.build/plugins/Swift-DocC/outputs" +
-		" && mkdir -p \(outputDirs)" +
-		" && \(transformDocs)"
-	}
-
-	// MARK: - Project Copy
-
-	private func copyProject(from source: URL) throws -> URL {
-		let fileManager = FileManager.default
-		let tempDirectory = fileManager.temporaryDirectory.appending(path: "swift-inotify-docs-\(UUID().uuidString)")
-		try fileManager.createDirectory(at: tempDirectory, withIntermediateDirectories: true)
-
-		let contents = try fileManager.contentsOfDirectory(at: source, includingPropertiesForKeys: nil)
-		for item in contents {
-			guard !Self.skipItems.contains(item.lastPathComponent) else { continue }
-			try fileManager.copyItem(at: item, to: tempDirectory.appending(path: item.lastPathComponent))
-		}
-
-		return tempDirectory
-	}
-
-	private func copyResults(from tempDirectory: URL, to projectDirectory: URL) throws {
-		let fileManager = FileManager.default
-		let source = tempDirectory.appending(path: "public")
-		let destination = projectDirectory.appending(path: "public")
-
-		if fileManager.fileExists(atPath: destination.path(percentEncoded: false)) {
-			try fileManager.removeItem(at: destination)
-		}
-		try fileManager.copyItem(at: source, to: destination)
-	}
-
-	// MARK: - Dependency Injection
-
-	private func injectDoccPluginDependency(in directory: URL, logger: Logger) async throws {
-		let packageSwiftURL = directory.appending(path: "Package.swift")
-		let contents = try String(contentsOf: packageSwiftURL, encoding: .utf8)
-
-		guard !contents.contains("swift-docc-plugin") else {
-			logger.info("swift-docc-plugin dependency already present.")
-			return
-		}
-
-		let result = try await Subprocess.run(
-			.name("swift"),
-			arguments: [
-				"package", "--package-path", directory.path(percentEncoded: false),
-				"add-dependency", Self.doccPluginURL,
-				"--from", Self.doccPluginMinVersion,
-			],
-		) { _ in }
-
-		guard result.terminationStatus.isSuccess else {
-			throw GenerateDocsError.dependencyInjectionFailed
-		}
-
-		logger.info("Injected swift-docc-plugin dependency.")
-	}
-}
-
-enum GenerateDocsError: Error, CustomStringConvertible {
-	case dependencyInjectionFailed
-
-	var description: String {
-		switch self {
-		case .dependencyInjectionFailed:
-			"Failed to add swift-docc-plugin dependency to Package.swift."
-		}
-	}
-}

Sources/TaskCLI/GenerateDocumentation Command.swift

@@ -0,0 +1,204 @@
+import ArgumentParser
+import Foundation
+import Logging
+import Noora
+import Subprocess
+
+struct GenerateDocumentationCommand: AsyncParsableCommand {
+	static let configuration = CommandConfiguration(
+		commandName: "generate-documentation",
+		abstract: "Generate DocC documentation of all targets inside a Linux container.",
+		aliases: ["gd"],
+	)
+
+	@OptionGroup var global: GlobalOptions
+
+	private static let doccPluginURL = "https://github.com/apple/swift-docc-plugin.git"
+	private static let doccPluginMinVersion = "1.4.0"
+	private static let skipItems: Set<String> = [".git", ".build", ".swiftpm", "public"]
+
+	// MARK: - Run
+
+	func run() async throws {
+		let noora = Noora()
+		let logger = global.makeLogger(labeled: "swift-inotify.cli.task.generate-documentation")
+		let fileManager = FileManager.default
+		let projectDirectory = URL(fileURLWithPath: fileManager.currentDirectoryPath)
+
+		let targets = try await Self.targets(for: projectDirectory)
+
+		noora.info("Generating DocC documentation on Linux.")
+		logger.debug("Current directory", metadata: ["current-directory": "\(projectDirectory.path(percentEncoded: false))", "targets": "\(targets.joined(separator: ", "))"])
+
+		let tempDirectory = try copyProject(from: projectDirectory)
+		logger.info("Copied project to temporary directory.", metadata: ["path": "\(tempDirectory.path(percentEncoded: false))"])
+
+		defer {
+			try? fileManager.removeItem(at: tempDirectory)
+			logger.info("Cleaned up temporary directory.")
+		}
+
+		try await injectDoccPluginDependency(in: tempDirectory, logger: logger)
+		let script = Self.makeRunScript(for: targets)
+
+		logger.debug("Container script", metadata: ["script": "\(script)"])
+		let dockerRunResult = try await Subprocess.run(
+			.name("docker"),
+			arguments: [
+				"run", "--rm",
+				"-v", "\(tempDirectory.path):/code",
+				"-v", "swift-inotify-build-cache:/code/.build",
+				"--platform", Docker.getLinuxPlatformStringWithHostArchitecture(),
+				"-w", "/code",
+				"swift:latest",
+				"/bin/bash", "-c", script
+			],
+			output: .standardOutput,
+			error: .standardError
+		)
+		if !dockerRunResult.terminationStatus.isSuccess {
+			noora.error("Documentation generation failed.")
+			return
+		}
+
+		try copyResults(from: tempDirectory, to: projectDirectory)
+		try Self.generateIndexHTML(
+			templateURL: projectDirectory.appending(path: ".github/workflows/index.tpl.html"),
+			outputURL: projectDirectory.appending(path: "public/index.html")
+		)
+
+		noora.success(
+			.alert("Documentation generated successfully.",
+				takeaways: ["Start a local web server with ./public as document root, i.e. with python3 -m http.server to browse the documentation."]
+			)
+		)
+	}
+	
+	private static func generateIndexHTML(templateURL: URL, outputURL: URL) throws {
+		var content = try String(contentsOf: templateURL, encoding: .utf8)
+
+		let replacements: [(String, String)] = [
+			("{{project.name}}", "Swift Inotify"),
+			("{{project.tagline}}", "🗂️ Monitor filesystem events on Linux using modern Swift concurrency"),
+			("{{project.links}}", """
+				<li><a href="inotify/documentation/inotify/">Inotify</a>: The actual library.</li>\
+				<li><a href="inotifytaskcli/documentation/inotifytaskcli/">TaskCLI</a>: The project build command.</li>
+				"""),
+		]
+
+		for (placeholder, value) in replacements {
+			content = content.replacingOccurrences(of: placeholder, with: value)
+		}
+
+		try FileManager.default.createDirectory(
+			at: outputURL.deletingLastPathComponent(),
+			withIntermediateDirectories: true
+		)
+		try content.write(to: outputURL, atomically: true, encoding: .utf8)
+	}
+
+	private static func targets(for projectDirectory: URL) async throws -> [String] {
+		let packages = try await Self.packageTargets()
+		var packagesWithDoccFolder: [(name: String, path: String)] = []
+		for package in packages {
+			guard try await DoccFinder.hasDoccFolder(at: package.path) else { continue }
+			packagesWithDoccFolder.append(package)
+		}
+		return packagesWithDoccFolder.map { $0.name }
+	}
+
+	private static func packageTargets() async throws -> [(name: String, path: String)] {
+		let packageDescriptionResult = try await Subprocess.run(
+			.name("swift"),
+			arguments: ["package", "describe", "--type", "json"],
+			output: .data(limit: 10_000),
+			error: .standardError
+		)
+
+		struct PackageDescription: Codable {
+			let targets: [Target]
+		}
+		struct Target: Codable {
+			let name: String
+			let path: String
+		}
+
+		if !packageDescriptionResult.terminationStatus.isSuccess {
+			throw GenerateDocumentationError.unableToReadPackageDescription
+		}
+
+		let package = try JSONDecoder().decode(PackageDescription.self, from: packageDescriptionResult.standardOutput)
+		return package.targets.map { ($0.name, $0.path) }
+	}
+
+	private static func makeRunScript(for targets: [String]) -> String {
+		targets.map {
+			"mkdir -p \"./public/\($0.localizedLowercase)\" && " +
+			"swift package --allow-writing-to-directory \"\($0.localizedLowercase)\" " +
+			"generate-documentation --disable-indexing --transform-for-static-hosting " +
+			"--target \"\($0)\" " +
+			"--hosting-base-path \"\($0.localizedLowercase)\" " +
+			"--output-path \"./public/\($0.localizedLowercase)\""
+		}.joined(separator: " && ")
+	}
+
+	// MARK: - Project Copy
+
+	private func copyProject(from source: URL) throws -> URL {
+		let fileManager = FileManager.default
+		let tempDirectory = fileManager.temporaryDirectory.appending(path: "swift-inotify-docs-\(UUID().uuidString)")
+		try fileManager.createDirectory(at: tempDirectory, withIntermediateDirectories: true)
+
+		let contents = try fileManager.contentsOfDirectory(at: source, includingPropertiesForKeys: nil)
+		for item in contents {
+			guard !Self.skipItems.contains(item.lastPathComponent) else { continue }
+			try fileManager.copyItem(at: item, to: tempDirectory.appending(path: item.lastPathComponent))
+		}
+
+		return tempDirectory
+	}
+
+	private func copyResults(from tempDirectory: URL, to projectDirectory: URL) throws {
+		let fileManager = FileManager.default
+		let source = tempDirectory.appending(path: "public")
+		let destination = projectDirectory.appending(path: "public")
+
+		if fileManager.fileExists(atPath: destination.path(percentEncoded: false)) {
+			try fileManager.removeItem(at: destination)
+		}
+		try fileManager.copyItem(at: source, to: destination)
+	}
+
+	// MARK: - Dependency Injection
+
+	private func injectDoccPluginDependency(in directory: URL, logger: Logger) async throws {
+		let swiftRunResult = try await Subprocess.run(
+			.name("swift"),
+			arguments: [
+				"package", "--package-path", directory.path(percentEncoded: false),
+				"add-dependency", "--from", Self.doccPluginMinVersion, Self.doccPluginURL
+			],
+			output: .standardOutput,
+			error: .standardError
+		)
+		if !swiftRunResult.terminationStatus.isSuccess {
+			throw GenerateDocumentationError.dependencyInjectionFailed
+		}
+
+		logger.info("Injected swift-docc-plugin dependency.")
+	}
+}
+
+enum GenerateDocumentationError: Error, CustomStringConvertible {
+	case dependencyInjectionFailed
+	case unableToReadPackageDescription
+
+	var description: String {
+		switch self {
+		case .dependencyInjectionFailed:
+			"Failed to add swift-docc-plugin dependency to Package.swift."
+		case .unableToReadPackageDescription:
+			"Failed to read the package description."
+		}
+	}
+}

Sources/TaskCLI/TaskCLI.docc/TaskCLI.md

@@ -1,4 +1,4 @@
-# ``TaskCLI``
+# ``InotifyTaskCLI``
 
 The build tool for the Swift Inotify project.
 
@@ -6,10 +6,14 @@ The build tool for the Swift Inotify project.
 
 `TaskCLI` is a small command-line executable (exposed as `task` in `Package.swift`) that automates project-level workflows. Its primary purpose is running integration tests and generating documentation inside Linux Docker containers, so you can validate inotify-dependent code on the correct platform even when developing on macOS.
 
+Because of a Swift Package Manager Bug in the [package dependency resolution][swiftpm-bug], the executable needs to be run using the `task.sh` shell script.
+
+[swiftpm-bug]: https://github.com/swiftlang/swift-package-manager/issues/8482
+
 ### Running the Tests
 
 ```bash
-swift run task test
+./task.sh test
 ```
 
 This launches a `swift:latest` Docker container with the repository mounted at `/code`, then executes two test passes:
@@ -22,7 +26,7 @@ The container is started with `--security-opt systempaths=unconfined` so that th
 ### Generating Documentation
 
 ```bash
-swift run task generate-docs
+./task.sh generate-documentation
 ```
 
 This copies the project to a temporary directory, injects the `swift-docc-plugin` dependency via `swift package add-dependency` (if absent), and runs documentation generation inside a `swift:latest` Docker container. The resulting static sites are written to `./public/inotify/` and `./public/taskcli/`, ready for deployment to GitHub Pages.
@@ -50,7 +54,7 @@ Docker must be installed and running on the host machine. The container uses the
 
 - ``Command``
 - ``TestCommand``
-- ``GenerateDocsCommand``
+- ``GenerateDocumentationCommand``
 
 ### Configuration
 
@@ -58,4 +62,4 @@ Docker must be installed and running on the host machine. The container uses the
 
 ### Errors
 
-- ``GenerateDocsError``
+- ``GenerateDocumentationError``

Sources/TaskCLI/Test Command.swift

@@ -1,8 +1,7 @@
 import ArgumentParser
-import AsyncAlgorithms
 import Foundation
-import Subprocess
 import Noora
+import Subprocess
 
 struct TestCommand: AsyncParsableCommand {
 	static let configuration = CommandConfiguration(
@@ -22,21 +21,21 @@ struct TestCommand: AsyncParsableCommand {
 
 		noora.info("Running tests on Linux.")
 		logger.debug("Current directory", metadata: ["current-directory": "\(currentDirectory)"])
-		async let monitorResult = Subprocess.run(
+		let dockerRunResult = try await Subprocess.run(
 			.name("docker"),
-			arguments: ["run", "-v", "\(currentDirectory):/code", "--security-opt", "systempaths=unconfined", "--platform", "linux/arm64", "-w", "/code", "swift:latest", "/bin/bash", "-c", "swift test --skip InotifyLimitTests; swift test --skip-build --filter InotifyLimitTests"],
-			preferredBufferSize: 10,
-		) { execution, standardInput, standardOutput, standardError in
-			print("")
-			let stdout = standardOutput.lines()
-			let stderr = standardError.lines()
-			for try await line in merge(stdout, stderr) {
-				noora.passthrough("\(line)")
-			}
-			print("")
-		}
-
-		if (try await monitorResult.terminationStatus.isSuccess) {
+			arguments: [
+				"run",
+				"-v", "\(currentDirectory):/code",
+				"-v", "swift-inotify-build-cache:/code/.build",
+				"--security-opt", "systempaths=unconfined",
+				"--platform", Docker.getLinuxPlatformStringWithHostArchitecture(),
+				"-w", "/code", "swift:latest",
+				"/bin/bash", "-c", "swift test --skip InotifyLimitTests; swift test --skip-build --filter InotifyLimitTests"
+			],
+			output: .standardOutput,
+			error: .standardError
+		)
+		if dockerRunResult.terminationStatus.isSuccess {
 			noora.success("All tests completed successfully.")
 		} else {
 			noora.error("Not all tests completed successfully.")

Tests/InotifyIntegrationTests/DirectoryResolverTests.swift

@@ -0,0 +1,17 @@
+import Foundation
+import Testing
+@testable import Inotify
+
+@Suite("Directory Resolver")
+struct DirectoryResolverTests {
+	@Test func listsDirectoryTree() async throws {
+		try await withTempDir { dir in
+			let subDirectory = "\(dir)/Subfolder/Folder 01"
+			try FileManager.default.createDirectory(atPath: subDirectory, withIntermediateDirectories: true)
+			let directories = try await DirectoryResolver.resolve(dir)
+
+			#expect(directories.count == 3)
+			#expect(directories.map { $0.description } == [dir, "\(dir)/Subfolder", subDirectory])
+		}
+	}
+}

Tests/InotifyIntegrationTests/RecursiveEventTests.swift

@@ -21,6 +21,24 @@ struct RecursiveEventTests {
 		}
 	}
 
+	@Test func ignoresFileCreationInIgnoredSubfolder() async throws {
+		try await withTempDir { dir in
+			let subDirectory = "\(dir)/Subfolder"
+			let filepath = "\(subDirectory)/modify-target.txt"
+			try FileManager.default.createDirectory(atPath: subDirectory, withIntermediateDirectories: true)
+
+			let events = try await getEventsForTrigger(
+				in: dir,
+				mask: [.create],
+				recursive: .recursive,
+				exclude: ["Subfolder"]
+			) { _ in try createFile(at: "\(filepath)", contents: "hello") }
+
+			let createEvent = events.first { $0.mask.contains(.create) && $0.path.string == filepath }
+			#expect(createEvent == nil, "Did not expect CREATE for '\(filepath)', got: \(events)")
+		}
+	}
+
 	@Test func newSubfoldersOfRecursiveWatchAreAutomaticallyWatchedToo() async throws {
 		try await withTempDir { dir in
 			let subDirectory = "\(dir)/Subfolder"
@@ -32,7 +50,7 @@ struct RecursiveEventTests {
 				recursive: .withAutomaticSubtreeWatching
 			) { _ in
 				try FileManager.default.createDirectory(atPath: subDirectory, withIntermediateDirectories: true)
-				try await Task.sleep(for: .milliseconds(200))
+				try await Task.sleep(for: .milliseconds(400))
 				try createFile(at: "\(filepath)", contents: "hello")
 			}
 

Tests/InotifyIntegrationTests/Utilities/getEventsForTrigger.swift

@@ -10,9 +10,11 @@ func getEventsForTrigger(
 	in dir: String,
 	mask: InotifyEventMask,
 	recursive: RecursivKind = .nonrecursive,
+	exclude: [String] = [],
 	trigger: @escaping (String) async throws -> Void,
 ) async throws -> [InotifyEvent] {
 	let watcher = try Inotify()
+	await watcher.exclude(names: exclude)
 	switch recursive {
 	case .nonrecursive:
 		try await watcher.addWatch(path: dir, mask: mask)

task.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env zsh
+
+# task - Run the package's TaskCLI target via a transient "task" product.
+#
+# Works around https://github.com/swiftlang/swift-package-manager/issues/8482
+# by temporarily adding an executable product named "task" to Package.swift,
+# running it with `swift run`, and restoring the original manifest afterwards.
+#
+# Usage:  task [arguments...]
+#
+# The script auto-detects the package name from Package.swift and expects an
+# executable target named "<PackageName>TaskCLI" to exist.
+
+set -euo pipefail
+
+# --- Resolve the package root (search upward for Package.swift) -----------
+
+package_root="${PWD}"
+while [[ ! -f "${package_root}/Package.swift" ]]; do
+	package_root="${package_root:h}"            # zsh dirname
+	if [[ "${package_root}" == "/" ]]; then
+		echo "error: Could not find Package.swift in any parent directory." >&2
+		exit 1
+	fi
+done
+
+manifest="${package_root}/Package.swift"
+backup="${manifest}.task-backup"
+
+# --- Extract the package name ---------------------------------------------
+
+package_name=$(sed -n 's/^.*name:[[:space:]]*"\([^"]*\)".*/\1/p' "${manifest}" | head -1)
+if [[ -z "${package_name}" ]]; then
+	echo "error: Could not determine package name from ${manifest}." >&2
+	exit 1
+fi
+
+target_name="${package_name}TaskCLI"
+
+# --- Cleanup trap (runs on EXIT — covers success, failure, signals) -------
+
+function cleanup {
+	if [[ -f "${backup}" ]]; then
+		mv -f "${backup}" "${manifest}"
+	fi
+}
+trap cleanup EXIT
+
+# --- Inject the transient "task" product ----------------------------------
+
+cp -f "${manifest}" "${backup}"
+
+swift package --package-path "${package_root}" \
+	add-product task --type executable --targets "${target_name}"
+
+# --- Run it (forward all script arguments) --------------------------------
+
+swift run --package-path "${package_root}" task "$@"