fix Meteor-Community-Packages#324

fully tested!

plugin/compile-scss.js

@@ -14,7 +14,6 @@ const userOptions = _getConfig(
 );
 
 let includePaths = [];
-
 if('object' === typeof userOptions) {
   if(Array.isArray(userOptions.includePaths)) {
     includePaths = userOptions.includePaths;
@@ -46,16 +45,10 @@ class SassCompiler extends MultiFileCachingCompiler {
   // The heuristic is that a file is an import (ie, is not itself processed as a root) if it matches _*.sass, _*.scss
   // This can be overridden in either direction via an explicit `isImport` file option in api.addFiles.
   isRoot(inputFile) {
-    // If the file is explicitly marked as an import, then it is not a root.
     const fileOptions = inputFile.getFileOptions();
     if(fileOptions.hasOwnProperty('isImport')) {
       return !fileOptions.isImport;
     }
-    // If the input file is a package file, it is not a root.
-    if(inputFile.isPackageFile()) {
-      return false;
-    }
-    // If the file is a partial (leading underscore), it is not a root.
     const pathInPackage = inputFile.getPathInPackage();
     const isPartial = hasUnderscore(pathInPackage);
     return !isPartial;
@@ -205,7 +198,11 @@ class SassCompiler extends MultiFileCachingCompiler {
     // Compile
     let output;
     try {
-      output = await sass.compileAsync(inputFile.getPathInPackage(), options);
+      let filePath = inputFile.getPathInPackage();
+      if(inputFile.getPackageName()) {
+        filePath = `${inputFile.getSourceRoot()}/${filePath}`;
+      }
+      output = await sass.compileAsync(filePath, options);
     } catch(e) {
       inputFile.error({
         message: `Scss compiler ${e}\n`,
@@ -291,7 +288,6 @@ function _getConfig(...configFileNames) {
     if(fileExists(configPath)) {
       try {
         return JSON.parse(fs.readFileSync(configPath, {encoding: 'utf8'}));
-        break;
       } catch(e) {
         console.warn(`[ SASS Compiler ] Custom config ignored (${configFileName}):\n - ${e}`);
         if(debugMode) {