Hi! I fixed some calls to "sys" for you!

lib/compile.js

@@ -1,7 +1,7 @@
-var sys = require ('sys')
+var util = require('util')
 
 function substitute_affectation(str, p1, offset, s) {
-    //console.log(sys.inspect(p1))
+    //console.log(util.inspect(p1))
     var split = p1.split('|');
     var str = split.shift();
     if(split.length == 0) {
@@ -26,7 +26,7 @@ function substitute_affectation(str, p1, offset, s) {
         + str
         + parenthesis
         + ');%>';
-    //sys.debug(result);
+    //util.debug(result);
     return result;
 }
 

lib/template.js

@@ -1,6 +1,6 @@
 var fs = require('fs');
 var path = require('path');
-var sys = require('sys');
+var util = require('util');
 var Stream = require('stream').Stream;
 var Script = process.binding('evals').Script;
 var process_template = require('./compile');
@@ -12,7 +12,7 @@ var Template = function Template(filename, data) {
     this._buffers = [];
     this._data = data;
 }
-sys.inherits(Template, Stream);
+util.inherits(Template, Stream);
 
 Template.prototype.sandbox = function sandbox(object) {
     this.sandbox = object || {};

test.js

@@ -1,10 +1,10 @@
 #!/usr/bin/env node
 
-var sys	    = require('sys'),
+var util = require('util'),
     blue    = require('./lib/blue');
 var t = new blue.Template('example/main.tpl');
 t.on('data', function(data) {
-    sys.print(data);
+    util.print(data);
 });
 t.data({require:require});
 t.run();