Restore setup_paths.js

node_modules/c9/setup_paths.js

@@ -0,0 +1,20 @@
+/**
+ * Allow code that lives on the server to resolve paths like
+ * require("plugins/c9.language/language"),
+ * just like on the client.
+ */
+var modules = require("module");
+var oldResolve = modules._resolveFilename;
+var extraPaths = [
+    __dirname + "/../../"
+];
+modules._resolveFilename = function(request, paths) {
+    // Ensure client extensions can be loaded
+    request = request.replace(/^lib\//, "node_modules/");
+    // Add the extra paths
+    extraPaths.forEach(function(p) {
+        if(paths.paths.indexOf(p) === -1)
+            paths.paths.push(p);
+    });
+    return oldResolve(request, paths);
+};

server.js

@@ -11,6 +11,7 @@ var architect = require("architect");
 var optimist = require("optimist");
 var async = require("async");
 var os = require("os");
+require("c9/setup_paths.js");
 
 if (process.version.match(/^v0/) && parseFloat(process.version.substr(3)) < 10) {
     console.warn("You're using Node.js version " + process.version