Index: src/applications/phame/skins/PhameBasicTemplateBlogSkin.php
===================================================================
--- src/applications/phame/skins/PhameBasicTemplateBlogSkin.php
+++ src/applications/phame/skins/PhameBasicTemplateBlogSkin.php
@@ -29,7 +29,7 @@
       }
     }
 
-    $map = CelerityResourceMap::getInstance();
+    $map = CelerityResourceMap::getNamedInstance('phabricator');
     $resource_symbol = 'syntax-highlighting-css';
     $resource_uri = $map->getURIForSymbol($resource_symbol);
 
Index: src/infrastructure/celerity/CelerityPhabricatorResourceController.php
===================================================================
--- src/infrastructure/celerity/CelerityPhabricatorResourceController.php
+++ src/infrastructure/celerity/CelerityPhabricatorResourceController.php
@@ -13,9 +13,8 @@
   private $path;
   private $hash;
 
-  protected function getRootDirectory() {
-    $root = dirname(phutil_get_library_root('phabricator'));
-    return $root.'/webroot/';
+  public function getCelerityResourceMap() {
+    return CelerityResourceMap::getNamedInstance('phabricator');
   }
 
   public function willProcessRequest(array $data) {
@@ -28,12 +27,14 @@
   }
 
   protected function buildResourceTransformer() {
-    $xformer = new CelerityResourceTransformer();
-    $xformer->setMinify(
-      !PhabricatorEnv::getEnvConfig('phabricator.developer-mode') &&
-      PhabricatorEnv::getEnvConfig('celerity.minify'));
-    $xformer->setCelerityMap(CelerityResourceMap::getInstance());
-    return $xformer;
+    $minify_on = PhabricatorEnv::getEnvConfig('celerity.minify');
+    $developer_on = PhabricatorEnv::getEnvConfig('phabricator.developer-mode');
+
+    $should_minify = ($minify_on && !$developer_on);
+
+    return id(new CelerityResourceTransformer())
+      ->setMinify($should_minify)
+      ->setCelerityMap($this->getCelerityResourceMap());
   }
 
 }
Index: src/infrastructure/celerity/CelerityResourceController.php
===================================================================
--- src/infrastructure/celerity/CelerityResourceController.php
+++ src/infrastructure/celerity/CelerityResourceController.php
@@ -14,9 +14,7 @@
     return false;
   }
 
-  public function getCelerityResourceMap() {
-    return CelerityResourceMap::getInstance();
-  }
+  abstract public function getCelerityResourceMap();
 
   protected function serveResource($path, $package_hash = null) {
     // Sanity checking to keep this from exposing anything sensitive, since it
Index: src/infrastructure/celerity/CelerityResourceMap.php
===================================================================
--- src/infrastructure/celerity/CelerityResourceMap.php
+++ src/infrastructure/celerity/CelerityResourceMap.php
@@ -8,7 +8,7 @@
  */
 final class CelerityResourceMap {
 
-  private static $instance;
+  private static $instances = array();
 
   private $resources;
   private $symbolMap;
@@ -37,12 +37,20 @@
     }
   }
 
-  public static function getInstance() {
-    if (empty(self::$instance)) {
-      $resources = new CelerityPhabricatorResources();
-      self::$instance = new CelerityResourceMap($resources);
+  public static function getNamedInstance($name) {
+    if (empty(self::$instances[$name])) {
+      $resources_list = CelerityPhysicalResources::getAll();
+      if (empty($resources_list[$name])) {
+        throw new Exception(
+          pht(
+            'No resource source exists with name "%s"!', $name));
+      }
+
+      $instance = new CelerityResourceMap($resources_list[$name]);
+      self::$instances[$name] = $instance;
     }
-    return self::$instance;
+
+    return self::$instances[$name];
   }
 
   public function getPackagedNamesForSymbols(array $symbols) {
Index: src/infrastructure/celerity/CelerityResourceTransformer.php
===================================================================
--- src/infrastructure/celerity/CelerityResourceTransformer.php
+++ src/infrastructure/celerity/CelerityResourceTransformer.php
@@ -6,7 +6,6 @@
 final class CelerityResourceTransformer {
 
   private $minify;
-  private $rawResourceMap;
   private $rawURIMap;
   private $celerityMap;
   private $translateURICallback;
@@ -22,11 +21,6 @@
     return $this;
   }
 
-  public function setRawResourceMap(array $raw_resource_map) {
-    $this->rawResourceMap = $raw_resource_map;
-    return $this;
-  }
-
   public function setCelerityMap(CelerityResourceMap $celerity_map) {
     $this->celerityMap = $celerity_map;
     return $this;
@@ -122,10 +116,6 @@
       if (isset($this->rawURIMap[$uri])) {
         $uri = $this->rawURIMap[$uri];
       }
-    } else if ($this->rawResourceMap) {
-      if (isset($this->rawResourceMap[$uri]['uri'])) {
-        $uri = $this->rawResourceMap[$uri]['uri'];
-      }
     } else if ($this->celerityMap) {
       $resource_uri = $this->celerityMap->getURIForName($uri);
       if ($resource_uri) {
Index: src/infrastructure/celerity/CelerityStaticResourceResponse.php
===================================================================
--- src/infrastructure/celerity/CelerityStaticResourceResponse.php
+++ src/infrastructure/celerity/CelerityStaticResourceResponse.php
@@ -61,7 +61,7 @@
 
   private function resolveResources() {
     if ($this->needsResolve) {
-      $map = CelerityResourceMap::getInstance();
+      $map = CelerityResourceMap::getNamedInstance('phabricator');
 
       $symbols = array_keys($this->symbols);
       $this->packaged = $map->getPackagedNamesForSymbols($symbols);
@@ -71,8 +71,8 @@
     return $this;
   }
 
-  public function renderSingleResource($symbol) {
-    $map = CelerityResourceMap::getInstance();
+  public function renderSingleResource($symbol, $source_name) {
+    $map = CelerityResourceMap::getNamedInstance($source_name);
     $packaged = $map->getPackagedNamesForSymbols(array($symbol));
     return $this->renderPackagedResources($packaged);
   }
@@ -236,7 +236,7 @@
   }
 
   private function getURI($name) {
-    $map = CelerityResourceMap::getInstance();
+    $map = CelerityResourceMap::getNamedInstance('phabricator');
     $uri = $map->getURIForName($name);
 
     // In developer mode, we dump file modification times into the URI. When a
Index: src/infrastructure/celerity/__tests__/CelerityResourceTransformerTestCase.php
===================================================================
--- src/infrastructure/celerity/__tests__/CelerityResourceTransformerTestCase.php
+++ src/infrastructure/celerity/__tests__/CelerityResourceTransformerTestCase.php
@@ -22,11 +22,9 @@
       );
 
       $xformer = new CelerityResourceTransformer();
-      $xformer->setRawResourceMap(
+      $xformer->setRawURIMap(
         array(
-          '/rsrc/example.png' => array(
-            'uri' => '/res/hash/example.png',
-          ),
+          '/rsrc/example.png' => '/res/hash/example.png',
         ));
       $xformer->setMinify($options['minify']);
 
Index: src/infrastructure/celerity/api.php
===================================================================
--- src/infrastructure/celerity/api.php
+++ src/infrastructure/celerity/api.php
@@ -49,8 +49,8 @@
  *
  * @group celerity
  */
-function celerity_get_resource_uri($resource) {
-  $map = CelerityResourceMap::getInstance();
+function celerity_get_resource_uri($resource, $source = 'phabricator') {
+  $map = CelerityResourceMap::getNamedInstance($source);
 
   $uri = $map->getURIForName($resource);
   if ($uri) {
Index: src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
===================================================================
--- src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
+++ src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
@@ -139,7 +139,7 @@
       }
     }
 
-    $celerity = CelerityResourceMap::getInstance();
+    $celerity = CelerityResourceMap::getNamedInstance('phabricator');
 
     $path = preg_replace(
       '@^externals/javelinjs/src/@',
Index: src/view/page/PhabricatorStandardPageView.php
===================================================================
--- src/view/page/PhabricatorStandardPageView.php
+++ src/view/page/PhabricatorStandardPageView.php
@@ -255,7 +255,7 @@
       parent::getHead(),
       phutil_safe_html($monospaced),
       phutil_safe_html($monospaced_win),
-      $response->renderSingleResource('javelin-magical-init'));
+      $response->renderSingleResource('javelin-magical-init', 'phabricator'));
   }
 
   public function setGlyph($glyph) {