Make sure PackageSourceBatch objects know their .sourceRoot.

tools/isobuild/bundler.js

@@ -420,6 +420,9 @@ class Target {
     packageMap,
     isopackCache,
 
+    // Path to the root source directory for this Target.
+    sourceRoot,
+
     // the architecture to build
     arch,
     // projectContextModule.CordovaPluginsFile object
@@ -436,6 +439,8 @@ class Target {
     this.packageMap = packageMap;
     this.isopackCache = isopackCache;
 
+    this.sourceRoot = sourceRoot;
+
     // Something like "web.browser" or "os" or "os.osx.x86_64"
     this.arch = arch;
 
@@ -711,6 +716,7 @@ class Target {
     const processor = new compilerPluginModule.CompilerPluginProcessor({
       unibuilds: this.unibuilds,
       arch: this.arch,
+      sourceRoot: this.sourceRoot,
       isopackCache: this.isopackCache,
       linkerCacheDir:
         (this.bundlerCacheDir && files.pathJoin(this.bundlerCacheDir, 'linker'))
@@ -2174,12 +2180,16 @@ exports.bundle = function ({
   var messages = buildmessage.capture({
     title: "building the application"
   }, function () {
+    var packageSource = new PackageSource;
+    packageSource.initFromAppDir(projectContext, exports.ignoreFiles);
+
     var makeClientTarget = Profile(
       "bundler.bundle..makeClientTarget", function (app, webArch, options) {
       var client = new ClientTarget({
         bundlerCacheDir,
         packageMap: projectContext.packageMap,
         isopackCache: projectContext.isopackCache,
+        sourceRoot: packageSource.sourceRoot,
         arch: webArch,
         cordovaPluginsFile: (webArch === 'web.cordova'
                              ? projectContext.cordovaPluginsFile : null),
@@ -2202,6 +2212,7 @@ exports.bundle = function ({
         bundlerCacheDir,
         packageMap: projectContext.packageMap,
         isopackCache: projectContext.isopackCache,
+        sourceRoot: packageSource.sourceRoot,
         arch: serverArch,
         releaseName: releaseName,
         buildMode: buildOptions.buildMode,
@@ -2223,8 +2234,6 @@ exports.bundle = function ({
     // Create a Isopack object that represents the app
     // XXX should this be part of prepareProjectForBuild and get cached?
     //     at the very least, would speed up deploy after build.
-    var packageSource = new PackageSource;
-    packageSource.initFromAppDir(projectContext, exports.ignoreFiles);
     var app = compiler.compile(packageSource, {
       packageMap: projectContext.packageMap,
       isopackCache: projectContext.isopackCache,
@@ -2468,6 +2477,7 @@ exports.buildJsImage = Profile("bundler.buildJsImage", function (options) {
   var target = new JsImageTarget({
     packageMap: options.packageMap,
     isopackCache: options.isopackCache,
+    sourceRoot: packageSource.sourceRoot,
     // This function does not yet support cross-compilation (neither does
     // initFromOptions). That's OK for now since we're only trying to support
     // cross-bundling, not cross-package-building, and this function is only

tools/isobuild/compiler-plugin.js

@@ -68,6 +68,7 @@ export class CompilerPluginProcessor {
   constructor({
     unibuilds,
     arch,
+    sourceRoot,
     isopackCache,
     linkerCacheDir,
   }) {
@@ -75,6 +76,7 @@ export class CompilerPluginProcessor {
 
     self.unibuilds = unibuilds;
     self.arch = arch;
+    self.sourceRoot = sourceRoot;
     self.isopackCache = isopackCache;
 
     self.linkerCacheDir = linkerCacheDir;
@@ -91,7 +93,13 @@ export class CompilerPluginProcessor {
     var sourceProcessorsWithSlots = {};
 
     var sourceBatches = _.map(self.unibuilds, function (unibuild) {
+      const { pkg: { name }, arch } = unibuild;
+      const sourceRoot = name
+        ? self.isopackCache.getSourceRoot(name, arch)
+        : self.sourceRoot;
+
       return new PackageSourceBatch(unibuild, self, {
+        sourceRoot,
         linkerCacheDir: self.linkerCacheDir
       });
     });
@@ -456,12 +464,16 @@ class ResourceSlot {
 }
 
 class PackageSourceBatch {
-  constructor(unibuild, processor, {linkerCacheDir}) {
+  constructor(unibuild, processor, {
+    sourceRoot,
+    linkerCacheDir,
+  }) {
     const self = this;
     buildmessage.assertInJob();
 
     self.unibuild = unibuild;
     self.processor = processor;
+    self.sourceRoot = sourceRoot;
     self.linkerCacheDir = linkerCacheDir;
     var sourceProcessorSet = self._getSourceProcessorSet();
     self.resourceSlots = [];

tools/isobuild/isopack-cache.js

@@ -118,6 +118,27 @@ _.extend(exports.IsopackCache.prototype, {
     });
   },
 
+  getSourceRoot(name, arch) {
+    const packageInfo = this._packageMap.getInfo(name);
+
+    if (packageInfo) {
+      if (packageInfo.kind === "local") {
+        return packageInfo.packageSource.sourceRoot;
+      }
+
+      if (packageInfo.kind === "versioned") {
+        const isopackPath = this._tropohouse.packagePath(
+          name,
+          packageInfo.version
+        );
+
+        return files.realpath(files.pathJoin(isopackPath, arch));
+      }
+    }
+
+    return null;
+  },
+
   _ensurePackageLoaded: function (name, onStack) {
     var self = this;
     buildmessage.assertInCapture();