| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:async'; |
| import 'dart:io'; |
| |
| import 'package:collection/collection.dart'; |
| import 'package:package_config/packages_file.dart' as packages_file; |
| import 'package:path/path.dart' as p; |
| import 'package:pub_semver/pub_semver.dart'; |
| |
| import 'dart.dart' as dart; |
| import 'exceptions.dart'; |
| import 'http.dart' as http; |
| import 'io.dart'; |
| import 'lock_file.dart'; |
| import 'log.dart' as log; |
| import 'package.dart'; |
| import 'package_graph.dart'; |
| import 'package_name.dart'; |
| import 'pubspec.dart'; |
| import 'sdk.dart'; |
| import 'solver.dart'; |
| import 'source/cached.dart'; |
| import 'source/unknown.dart'; |
| import 'system_cache.dart'; |
| import 'utils.dart'; |
| |
| /// A RegExp to match SDK constraints in a lockfile. |
| final _sdkConstraint = () { |
| // This matches both the old-style constraint: |
| // |
| // ```yaml |
| // sdk: ">=1.2.3 <2.0.0" |
| // ``` |
| // |
| // and the new-style constraint: |
| // |
| // ```yaml |
| // sdks: |
| // dart: ">=1.2.3 <2.0.0" |
| // ``` |
| var sdkNames = sdks.keys.map((name) => " " + name).join('|'); |
| return new RegExp(r'^(' + sdkNames + r'|sdk): "?([^"]*)"?$', multiLine: true); |
| }(); |
| |
| /// The context surrounding the root package pub is operating on. |
| /// |
| /// Pub operates over a directed graph of dependencies that starts at a root |
| /// "entrypoint" package. This is typically the package where the current |
| /// working directory is located. An entrypoint knows the [root] package it is |
| /// associated with and is responsible for managing the "packages" directory |
| /// for it. |
| /// |
| /// That directory contains symlinks to all packages used by an app. These links |
| /// point either to the [SystemCache] or to some other location on the local |
| /// filesystem. |
| /// |
| /// While entrypoints are typically applications, a pure library package may end |
| /// up being used as an entrypoint. Also, a single package may be used as an |
| /// entrypoint in one context but not in another. For example, a package that |
| /// contains a reusable library may not be the entrypoint when used by an app, |
| /// but may be the entrypoint when you're running its tests. |
| class Entrypoint { |
| /// The root package this entrypoint is associated with. |
| final Package root; |
| |
| /// The system-wide cache which caches packages that need to be fetched over |
| /// the network. |
| final SystemCache cache; |
| |
| /// Whether this entrypoint is in memory only, as opposed to representing a |
| /// real directory on disk. |
| final bool _inMemory; |
| |
| /// Whether this is an entrypoint for a globally-activated package. |
| final bool isGlobal; |
| |
| /// The lockfile for the entrypoint. |
| /// |
| /// If not provided to the entrypoint, it will be loaded lazily from disk. |
| LockFile get lockFile { |
| if (_lockFile != null) return _lockFile; |
| |
| if (!fileExists(lockFilePath)) { |
| _lockFile = new LockFile.empty(); |
| } else { |
| _lockFile = new LockFile.load(lockFilePath, cache.sources); |
| } |
| |
| return _lockFile; |
| } |
| |
| LockFile _lockFile; |
| |
| /// The package graph for the application and all of its transitive |
| /// dependencies. |
| /// |
| /// Throws a [DataError] if the `.packages` file isn't up-to-date relative to |
| /// the pubspec and the lockfile. |
| PackageGraph get packageGraph { |
| if (_packageGraph != null) return _packageGraph; |
| |
| assertUpToDate(); |
| var packages = new Map<String, Package>.fromIterable( |
| lockFile.packages.values, |
| key: (id) => id.name, |
| value: (id) => cache.load(id)); |
| packages[root.name] = root; |
| |
| _packageGraph = new PackageGraph(this, lockFile, packages); |
| return _packageGraph; |
| } |
| |
| PackageGraph _packageGraph; |
| |
| /// The path to the entrypoint's "packages" directory. |
| String get packagesPath => root.path('packages'); |
| |
| /// The path to the entrypoint's ".packages" file. |
| String get packagesFile => root.path('.packages'); |
| |
| /// The path to the entrypoint package's pubspec. |
| String get pubspecPath => root.path('pubspec.yaml'); |
| |
| /// The path to the entrypoint package's lockfile. |
| String get lockFilePath => root.path('pubspec.lock'); |
| |
| /// The path to the entrypoint package's `.dart_tool/pub` cache directory. |
| /// |
| /// If the old-style `.pub` directory is being used, this returns that |
| /// instead. |
| String get cachePath { |
| var newPath = root.path('.dart_tool/pub'); |
| var oldPath = root.path('.pub'); |
| if (!dirExists(newPath) && dirExists(oldPath)) return oldPath; |
| return newPath; |
| } |
| |
| /// The path to the directory containing dependency executable snapshots. |
| String get _snapshotPath => p.join(cachePath, 'bin'); |
| |
| /// Loads the entrypoint from a package at [rootDir]. |
| Entrypoint(String rootDir, SystemCache cache, {this.isGlobal: false}) |
| : root = |
| new Package.load(null, rootDir, cache.sources, isRootPackage: true), |
| cache = cache, |
| _inMemory = false; |
| |
| /// Creates an entrypoint given package and lockfile objects. |
| Entrypoint.inMemory(this.root, this._lockFile, this.cache, |
| {this.isGlobal: false}) |
| : _inMemory = true; |
| |
| /// Creates an entrypoint given a package and a [solveResult], from which the |
| /// package graph and lockfile will be computed. |
| Entrypoint.fromSolveResult(this.root, this.cache, SolveResult solveResult, |
| {this.isGlobal: false}) |
| : _inMemory = true { |
| _packageGraph = new PackageGraph.fromSolveResult(this, solveResult); |
| _lockFile = _packageGraph.lockFile; |
| } |
| |
| /// Gets all dependencies of the [root] package. |
| /// |
| /// Performs version resolution according to [SolveType]. |
| /// |
| /// [useLatest], if provided, defines a list of packages that will be |
| /// unlocked and forced to their latest versions. If [upgradeAll] is |
| /// true, the previous lockfile is ignored and all packages are re-resolved |
| /// from scratch. Otherwise, it will attempt to preserve the versions of all |
| /// previously locked packages. |
| /// |
| /// Shows a report of the changes made relative to the previous lockfile. If |
| /// this is an upgrade or downgrade, all transitive dependencies are shown in |
| /// the report. Otherwise, only dependencies that were changed are shown. If |
| /// [dryRun] is `true`, no physical changes are made. |
| /// |
| /// If [precompile] is `true` (the default), this snapshots dependencies' |
| /// executables. |
| /// |
| /// If [packagesDir] is `true`, this will create "packages" directory with |
| /// symlinks to the installed packages. This directory will be symlinked into |
| /// any directory that might contain an entrypoint. |
| /// |
| /// Updates [lockFile] and [packageRoot] accordingly. |
| Future acquireDependencies(SolveType type, |
| {List<String> useLatest, |
| bool dryRun: false, |
| bool precompile: true, |
| bool packagesDir: false}) async { |
| var result = await resolveVersions(type, cache, root, |
| lockFile: lockFile, useLatest: useLatest); |
| |
| // Log once about all overridden packages. |
| if (warnAboutPreReleaseSdkOverrides && result.pubspecs != null) { |
| var overriddenPackages = (result.pubspecs.values |
| .where((pubspec) => pubspec.dartSdkWasOverridden) |
| .map((pubspec) => pubspec.name) |
| .toList() |
| ..sort()) |
| .join(', '); |
| if (overriddenPackages.isNotEmpty) { |
| log.message(log.yellow( |
| 'Overriding the upper bound Dart SDK constraint to <=${sdk.version} ' |
| 'for the following packages:\n\n${overriddenPackages}\n\n' |
| 'To disable this you can set the PUB_ALLOW_PRERELEASE_SDK system ' |
| 'environment variable to `false`, or you can silence this message ' |
| 'by setting it to `quiet`.')); |
| } |
| } |
| |
| result.showReport(type); |
| |
| if (dryRun) { |
| result.summarizeChanges(type, dryRun: dryRun); |
| return; |
| } |
| |
| // Install the packages and maybe link them into the entrypoint. |
| if (packagesDir) { |
| cleanDir(packagesPath); |
| } else { |
| deleteEntry(packagesPath); |
| } |
| |
| await Future |
| .wait(result.packages.map((id) => _get(id, packagesDir: packagesDir))); |
| _saveLockFile(result); |
| |
| if (packagesDir) _linkSelf(); |
| _linkOrDeleteSecondaryPackageDirs(packagesDir: packagesDir); |
| |
| result.summarizeChanges(type, dryRun: dryRun); |
| |
| /// Build a package graph from the version solver results so we don't |
| /// have to reload and reparse all the pubspecs. |
| _packageGraph = new PackageGraph.fromSolveResult(this, result); |
| |
| writeTextFile(packagesFile, lockFile.packagesFile(cache, root.name)); |
| |
| try { |
| if (precompile) { |
| await precompileExecutables(changed: result.changedPackages); |
| } else { |
| _deleteExecutableSnapshots(changed: result.changedPackages); |
| } |
| } catch (error, stackTrace) { |
| // Just log exceptions here. Since the method is just about acquiring |
| // dependencies, it shouldn't fail unless that fails. |
| log.exception(error, stackTrace); |
| } |
| } |
| |
| /// Precompiles all executables from dependencies that don't transitively |
| /// depend on [this] or on a path dependency. |
| Future precompileExecutables({Iterable<String> changed}) async { |
| migrateCache(); |
| _deleteExecutableSnapshots(changed: changed); |
| |
| var executables = mapMap<String, PackageRange, String, List<String>>( |
| root.immediateDependencies, |
| value: (name, _) => _executablesForPackage(name)); |
| |
| for (var package in executables.keys.toList()) { |
| if (executables[package].isEmpty) executables.remove(package); |
| } |
| |
| if (executables.isEmpty) return; |
| |
| await log.progress("Precompiling executables", () async { |
| ensureDir(_snapshotPath); |
| |
| // Make sure there's a trailing newline so our version file matches the |
| // SDK's. |
| writeTextFile(p.join(_snapshotPath, 'sdk-version'), "${sdk.version}\n"); |
| |
| await _precompileExecutables(executables); |
| }); |
| } |
| |
| //// Precompiles [executables] to snapshots from the filesystem. |
| Future _precompileExecutables(Map<String, List<String>> executables) { |
| return waitAndPrintErrors(executables.keys.map((package) { |
| var dir = p.join(_snapshotPath, package); |
| cleanDir(dir); |
| return waitAndPrintErrors(executables[package].map((path) { |
| var url = p.toUri(p.join(packageGraph.packages[package].dir, path)); |
| return dart.snapshot(url, p.join(dir, p.basename(path) + '.snapshot'), |
| packagesFile: p.toUri(packagesFile), |
| name: '$package:${p.basenameWithoutExtension(path)}'); |
| })); |
| })); |
| } |
| |
| /// Deletes outdated cached executable snapshots. |
| /// |
| /// If [changed] is passed, only dependencies whose contents might be changed |
| /// if one of the given packages changes will have their executables deleted. |
| void _deleteExecutableSnapshots({Iterable<String> changed}) { |
| if (!dirExists(_snapshotPath)) return; |
| |
| // If we don't know what changed, we can't safely re-use any snapshots. |
| if (changed == null) { |
| deleteEntry(_snapshotPath); |
| return; |
| } |
| changed = changed.toSet(); |
| |
| // If the existing executable was compiled with a different SDK, we need to |
| // recompile regardless of what changed. |
| // TODO(nweiz): Use the VM to check this when issue 20802 is fixed. |
| var sdkVersionPath = p.join(_snapshotPath, 'sdk-version'); |
| if (!fileExists(sdkVersionPath) || |
| readTextFile(sdkVersionPath) != "${sdk.version}\n") { |
| deleteEntry(_snapshotPath); |
| return; |
| } |
| |
| // Clean out any outdated snapshots. |
| for (var entry in listDir(_snapshotPath)) { |
| if (!dirExists(entry)) continue; |
| |
| var package = p.basename(entry); |
| if (!packageGraph.packages.containsKey(package) || |
| packageGraph.isPackageMutable(package) || |
| packageGraph |
| .transitiveDependencies(package) |
| .any((dep) => changed.contains(dep.name))) { |
| deleteEntry(entry); |
| } |
| } |
| } |
| |
| /// Returns the list of all paths within [packageName] that should be |
| /// precompiled. |
| List<String> _executablesForPackage(String packageName) { |
| var package = packageGraph.packages[packageName]; |
| var binDir = package.path('bin'); |
| if (!dirExists(binDir)) return []; |
| if (packageGraph.isPackageMutable(packageName)) return []; |
| |
| var executables = package.executablePaths; |
| |
| // If any executables don't exist, recompile all executables. |
| // |
| // Normally, [_deleteExecutableSnapshots] will ensure that all the outdated |
| // executable directories will be deleted, any checking for any non-existent |
| // executable will save us a few IO operations over checking each one. If |
| // some executables do exist and some do not, the directory is corrupted and |
| // it's good to start from scratch anyway. |
| var executablesExist = executables.every((executable) => fileExists(p.join( |
| _snapshotPath, packageName, "${p.basename(executable)}.snapshot"))); |
| if (!executablesExist) return executables; |
| |
| // Otherwise, we don't need to recompile. |
| return []; |
| } |
| |
| /// Makes sure the package at [id] is locally available. |
| /// |
| /// This automatically downloads the package to the system-wide cache as well |
| /// if it requires network access to retrieve (specifically, if the package's |
| /// source is a [CachedSource]). |
| Future _get(PackageId id, {bool packagesDir: false}) { |
| return http.withDependencyType(root.dependencyType(id.name), () async { |
| if (id.isRoot) return; |
| |
| var source = cache.source(id.source); |
| if (!packagesDir) { |
| if (source is CachedSource) await source.downloadToSystemCache(id); |
| return; |
| } |
| |
| var packagePath = p.join(packagesPath, id.name); |
| if (entryExists(packagePath)) deleteEntry(packagePath); |
| await source.get(id, packagePath); |
| }); |
| } |
| |
| /// Throws a [DataError] if the `.packages` file doesn't exist or if it's |
| /// out-of-date relative to the lockfile or the pubspec. |
| void assertUpToDate() { |
| if (_inMemory) return; |
| |
| if (!entryExists(lockFilePath)) { |
| dataError('No pubspec.lock file found, please run "pub get" first.'); |
| } |
| |
| if (!entryExists(packagesFile)) { |
| dataError('No .packages file found, please run "pub get" first.'); |
| } |
| |
| // Manually parse the lockfile because a full YAML parse is relatively slow |
| // and this is on the hot path for "pub run". |
| var lockFileText = readTextFile(lockFilePath); |
| var hasPathDependencies = lockFileText.contains("\n source: path\n"); |
| |
| var pubspecModified = new File(pubspecPath).lastModifiedSync(); |
| var lockFileModified = new File(lockFilePath).lastModifiedSync(); |
| |
| var touchedLockFile = false; |
| if (lockFileModified.isBefore(pubspecModified) || hasPathDependencies) { |
| _assertLockFileUpToDate(); |
| if (_arePackagesAvailable()) { |
| touchedLockFile = true; |
| touch(lockFilePath); |
| } else { |
| dataError('The pubspec.yaml file has changed since the pubspec.lock ' |
| 'file was generated, please run "pub get" again.'); |
| } |
| } |
| |
| var packagesModified = new File(packagesFile).lastModifiedSync(); |
| if (packagesModified.isBefore(lockFileModified)) { |
| if (_isPackagesFileUpToDate()) { |
| touch(packagesFile); |
| } else { |
| dataError('The pubspec.lock file has changed since the .packages file ' |
| 'was generated, please run "pub get" again.'); |
| } |
| } else if (touchedLockFile) { |
| touch(packagesFile); |
| } |
| |
| for (var match in _sdkConstraint.allMatches(lockFileText)) { |
| var identifier = match[1] == 'sdk' ? 'dart' : match[1].trim(); |
| var sdk = sdks[identifier]; |
| |
| // Don't complain if there's an SDK constraint for an unavailable SDK. For |
| // example, the Flutter SDK being unavailable just means that we aren't |
| // running from within the `flutter` executable, and we want users to be |
| // able to `pub run` non-Flutter tools even in a Flutter app. |
| if (!sdk.isAvailable) continue; |
| |
| var parsedConstraint = new VersionConstraint.parse(match[2]); |
| if (!parsedConstraint.allows(sdk.version)) { |
| dataError("${sdk.name} ${sdk.version} is incompatible with your " |
| "dependencies' SDK constraints. Please run \"pub get\" again."); |
| } |
| } |
| } |
| |
| /// Determines whether or not the lockfile is out of date with respect to the |
| /// pubspec. |
| /// |
| /// If any mutable pubspec contains dependencies that are not in the lockfile |
| /// or that don't match what's in there, this will throw a [DataError] |
| /// describing the issue. |
| void _assertLockFileUpToDate() { |
| if (!root.immediateDependencies.values.every(_isDependencyUpToDate)) { |
| dataError('The pubspec.yaml file has changed since the pubspec.lock ' |
| 'file was generated, please run "pub get" again.'); |
| } |
| |
| var overrides = new MapKeySet(root.dependencyOverrides); |
| |
| // Check that uncached dependencies' pubspecs are also still satisfied, |
| // since they're mutable and may have changed since the last get. |
| for (var id in lockFile.packages.values) { |
| var source = cache.source(id.source); |
| if (source is CachedSource) continue; |
| |
| try { |
| if (cache.load(id).dependencies.values.every((dep) => |
| overrides.contains(dep.name) || _isDependencyUpToDate(dep))) { |
| continue; |
| } |
| } on FileException { |
| // If we can't load the pubpsec, the user needs to re-run "pub get". |
| } |
| |
| dataError('${p.join(source.getDirectory(id), 'pubspec.yaml')} has ' |
| 'changed since the pubspec.lock file was generated, please run "pub ' |
| 'get" again.'); |
| } |
| } |
| |
| /// Returns whether the locked version of [dep] matches the dependency. |
| bool _isDependencyUpToDate(PackageRange dep) { |
| if (dep.name == root.name) return true; |
| |
| var locked = lockFile.packages[dep.name]; |
| return locked != null && dep.allows(locked); |
| } |
| |
| /// Determines whether all of the packages in the lockfile are already |
| /// installed and available. |
| bool _arePackagesAvailable() { |
| return lockFile.packages.values.every((package) { |
| if (package.source is UnknownSource) return false; |
| |
| // We only care about cached sources. Uncached sources aren't "installed". |
| // If one of those is missing, we want to show the user the file not |
| // found error later since installing won't accomplish anything. |
| var source = cache.source(package.source); |
| if (source is! CachedSource) return true; |
| |
| // Get the directory. |
| var dir = source.getDirectory(package); |
| // See if the directory is there and looks like a package. |
| return dirExists(dir) && fileExists(p.join(dir, "pubspec.yaml")); |
| }); |
| } |
| |
| /// Determines whether or not the `.packages` file is out of date with respect |
| /// to the lockfile. |
| /// |
| /// This will be `false` if the packages file contains dependencies that are |
| /// not in the lockfile or that don't match what's in there. |
| bool _isPackagesFileUpToDate() { |
| var packages = packages_file.parse( |
| new File(packagesFile).readAsBytesSync(), p.toUri(packagesFile)); |
| |
| return lockFile.packages.values.every((lockFileId) { |
| // It's very unlikely that the lockfile is invalid here, but it's not |
| // impossible—for example, the user may have a very old application |
| // package with a checked-in lockfile that's newer than the pubspec, but |
| // that contains SDK dependencies. |
| if (lockFileId.source is UnknownSource) return false; |
| |
| var packagesFileUri = packages[lockFileId.name]; |
| if (packagesFileUri == null) return false; |
| |
| // Pub only generates "file:" and relative URIs. |
| if (packagesFileUri.scheme != 'file' && |
| packagesFileUri.scheme.isNotEmpty) { |
| return false; |
| } |
| |
| var source = cache.source(lockFileId.source); |
| |
| // Get the dirname of the .packages path, since it's pointing to lib/. |
| var packagesFilePath = |
| p.dirname(p.join(root.dir, p.fromUri(packagesFileUri))); |
| var lockFilePath = p.join(root.dir, source.getDirectory(lockFileId)); |
| |
| // For cached sources, make sure the directory exists and looks like a |
| // package. This is also done by [_arePackagesAvailable] but that may not |
| // be run if the lockfile is newer than the pubspec. |
| if (source is CachedSource && !dirExists(packagesFilePath) || |
| !fileExists(p.join(packagesFilePath, "pubspec.yaml"))) { |
| return false; |
| } |
| |
| // Make sure that the packages file agrees with the lock file about the |
| // path to the package. |
| return p.normalize(packagesFilePath) == p.normalize(lockFilePath); |
| }); |
| } |
| |
| /// Saves a list of concrete package versions to the `pubspec.lock` file. |
| void _saveLockFile(SolveResult result) { |
| _lockFile = result.lockFile; |
| var lockFilePath = root.path('pubspec.lock'); |
| writeTextFile(lockFilePath, _lockFile.serialize(root.dir)); |
| } |
| |
| /// Creates a self-referential symlink in the `packages` directory that allows |
| /// a package to import its own files using `package:`. |
| void _linkSelf() { |
| var linkPath = p.join(packagesPath, root.name); |
| // Create the symlink if it doesn't exist. |
| if (entryExists(linkPath)) return; |
| ensureDir(packagesPath); |
| createPackageSymlink(root.name, root.dir, linkPath, |
| isSelfLink: true, relative: true); |
| } |
| |
| /// If [packagesDir] is true, add "packages" directories to the whitelist of |
| /// directories that may contain Dart entrypoints. |
| /// |
| /// Otherwise, delete any "packages" directories in the whitelist of |
| /// directories that may contain Dart entrypoints. |
| void _linkOrDeleteSecondaryPackageDirs({bool packagesDir: false}) { |
| // Only the main "bin" directory gets a "packages" directory, not its |
| // subdirectories. |
| var binDir = root.path('bin'); |
| if (dirExists(binDir)) { |
| _linkOrDeleteSecondaryPackageDir(binDir, packagesDir: packagesDir); |
| } |
| |
| // The others get "packages" directories in subdirectories too. |
| for (var dir in ['benchmark', 'example', 'test', 'tool', 'web']) { |
| _linkOrDeleteSecondaryPackageDirsRecursively(root.path(dir), |
| packagesDir: packagesDir); |
| } |
| } |
| |
| /// If [packagesDir] is true, creates a symlink to the "packages" directory in |
| /// [dir] and all its subdirectories. |
| /// |
| /// Otherwise, deletes any "packages" directories in [dir] and all its |
| /// subdirectories. |
| void _linkOrDeleteSecondaryPackageDirsRecursively(String dir, |
| {bool packagesDir: false}) { |
| if (!dirExists(dir)) return; |
| _linkOrDeleteSecondaryPackageDir(dir, packagesDir: packagesDir); |
| for (var subdir in _listDirWithoutPackages(dir)) { |
| if (!dirExists(subdir)) continue; |
| _linkOrDeleteSecondaryPackageDir(subdir, packagesDir: packagesDir); |
| } |
| } |
| |
| // TODO(nweiz): roll this into [listDir] in io.dart once issue 4775 is fixed. |
| /// Recursively lists the contents of [dir], excluding hidden `.DS_Store` |
| /// files and `package` files. |
| Iterable<String> _listDirWithoutPackages(dir) { |
| return listDir(dir).expand<String>((file) { |
| if (p.basename(file) == 'packages') return []; |
| if (!dirExists(file)) return []; |
| var fileAndSubfiles = [file]; |
| fileAndSubfiles.addAll(_listDirWithoutPackages(file)); |
| return fileAndSubfiles; |
| }); |
| } |
| |
| /// If [packagesDir] is true, creates a symlink to the "packages" directory in |
| /// [dir]. |
| /// |
| /// Otherwise, deletes a "packages" directories in [dir] if one exists. |
| void _linkOrDeleteSecondaryPackageDir(String dir, {bool packagesDir: false}) { |
| var symlink = p.join(dir, 'packages'); |
| if (entryExists(symlink)) deleteEntry(symlink); |
| if (packagesDir) createSymlink(packagesPath, symlink, relative: true); |
| } |
| |
| /// If the entrypoint uses the old-style `.pub` cache directory, migrates it |
| /// to the new-style `.dart_tool/pub` directory. |
| void migrateCache() { |
| var oldPath = root.path('.pub'); |
| if (!dirExists(oldPath)) return; |
| |
| var newPath = root.path('.dart_tool/pub'); |
| |
| // If both the old and new directories exist, something weird is going on. |
| // Do nothing to avoid making things worse. Pub will prefer the new |
| // directory anyway. |
| if (dirExists(newPath)) return; |
| |
| ensureDir(p.dirname(newPath)); |
| renameDir(oldPath, newPath); |
| } |
| } |