diff --git a/lib/coffee-script.js b/lib/coffee-script.js
index bce590aa..5c3c8f60 100644
--- a/lib/coffee-script.js
+++ b/lib/coffee-script.js
@@ -1,5 +1,5 @@
 (function(){
-  var compiler, lexer, parser, path;
+  var lexer, parser, path;
   // Set up for both the browser and the server.
   if ((typeof process !== "undefined" && process !== null)) {
     process.mixin(require('nodes'));
@@ -61,52 +61,4 @@
     }).call(this);
     return puts(strings.join(' '));
   };
-  //---------- Below this line is obsolete, for the Ruby compiler. ----------------
-  // The path to the CoffeeScript executable.
-  compiler = function compiler() {
-    return path.normalize(path.dirname(__filename) + '/../../bin/coffee');
-  };
-  // Compile a string over stdin, with global variables, for the REPL.
-  exports.ruby_compile = function ruby_compile(code, callback) {
-    var coffee, js;
-    js = '';
-    coffee = process.createChildProcess(compiler(), ['--eval', '--no-wrap', '--globals']);
-    coffee.addListener('output', function(results) {
-      if ((typeof results !== "undefined" && results !== null)) {
-        return js += results;
-      }
-    });
-    coffee.addListener('exit', function() {
-      return callback(js);
-    });
-    coffee.write(code);
-    return coffee.close();
-  };
-  // Compile a list of CoffeeScript files on disk.
-  exports.ruby_compile_files = function ruby_compile_files(paths, callback) {
-    var coffee, exit_ran, js;
-    js = '';
-    coffee = process.createChildProcess(compiler(), ['--print'].concat(paths));
-    coffee.addListener('output', function(results) {
-      if ((typeof results !== "undefined" && results !== null)) {
-        return js += results;
-      }
-    });
-    // NB: we have to add a mutex to make sure it doesn't get called twice.
-    exit_ran = false;
-    coffee.addListener('exit', function() {
-      if (exit_ran) {
-        return null;
-      }
-      exit_ran = true;
-      return callback(js);
-    });
-    return coffee.addListener('error', function(message) {
-      if (!(message)) {
-        return null;
-      }
-      puts(message);
-      throw new Error("CoffeeScript compile error");
-    });
-  };
 })();
\ No newline at end of file
diff --git a/lib/narwhal.js b/lib/narwhal.js
new file mode 100755
index 00000000..e5633864
--- /dev/null
+++ b/lib/narwhal.js
@@ -0,0 +1,44 @@
+(function(){
+  var coffee, factories, file, loader, os, puts;
+  // The Narwhal-compatibility wrapper for CoffeeScript.
+  // Require external dependencies.
+  os = require('os');
+  file = require('file');
+  coffee = require('./coffee-script');
+  // Alias print to "puts", for Node.js compatibility:
+  puts = print;
+  // Compile a string of CoffeeScript into JavaScript.
+  exports.compile = function compile(source) {
+    return coffee.compile(source);
+  };
+  // Compile a given CoffeeScript file into JavaScript.
+  exports.compileFile = function compileFile(path) {
+    return coffee.compile(file.read(path));
+  };
+  // Make a factory for the CoffeeScript environment.
+  exports.makeNarwhalFactory = function makeNarwhalFactory(path) {
+    var code, factoryText;
+    code = exports.compileFile(path);
+    factoryText = "function(require,exports,module,system,print){" + code + "/**/\n}";
+    if (system.engine === "rhino") {
+      return Packages.org.mozilla.javascript.Context.getCurrentContext().compileFunction(global, factoryText, path, 0, null);
+    } else {
+      // eval requires parentheses, but parentheses break compileFunction.
+      return eval("(" + factoryText + ")");
+    }
+  };
+  // The Narwhal loader for '.coffee' files.
+  factories = {};
+  loader = {};
+  // Reload the coffee-script environment from source.
+  loader.reload = function reload(topId, path) {
+    return factories[topId] = function() {
+      return exports.makeNarwhalFactory(path);
+    };
+  };
+  // Ensure that the coffee-script environment is loaded.
+  loader.load = function load(topId, path) {
+    return factories[topId] = factories[topId] || this.reload(topId, path);
+  };
+  require.loader.loaders.unshift([".coffee", loader]);
+})();
\ No newline at end of file
diff --git a/lib/narwhal/coffee-script.js b/lib/narwhal/coffee-script.js
deleted file mode 100644
index 4ccbf55e..00000000
--- a/lib/narwhal/coffee-script.js
+++ /dev/null
@@ -1,96 +0,0 @@
-(function(){
-  var File, OS, Readline, checkForErrors, coffeePath, factories, loader, puts;
-  // The Narwhal-compatibility wrapper for CoffeeScript.
-  // Require external dependencies.
-  OS = require('os');
-  File = require('file');
-  Readline = require('readline');
-  // The path to the CoffeeScript Compiler.
-  coffeePath = File.path(module.path).dirname().dirname().dirname().dirname().join('bin', 'coffee');
-  // Our general-purpose error handler.
-  checkForErrors = function checkForErrors(coffeeProcess) {
-    if (coffeeProcess.wait() === 0) {
-      return true;
-    }
-    system.stderr.print(coffeeProcess.stderr.read());
-    throw new Error("CoffeeScript compile error");
-  };
-  // Alias print to "puts", for Node.js compatibility:
-  puts = print;
-  // Run a simple REPL, round-tripping to the CoffeeScript compiler for every
-  // command.
-  exports.run = function run(args) {
-    var __a, __b, i, path, result;
-    if (args.length) {
-      __a = args;
-      for (i = 0; i < __a.length; i++) {
-        path = __a[i];
-        exports.evalCS(File.read(path));
-        delete args[i];
-      }
-      return true;
-    }
-    __b = [];
-    while (true) {
-      __b.push((function() {
-        try {
-          system.stdout.write('coffee> ').flush();
-          result = exports.evalCS(Readline.readline(), ['--globals']);
-          if (result !== undefined) {
-            return print(result);
-          }
-        } catch (e) {
-          return print(e);
-        }
-      }).call(this));
-    }
-    return __b;
-  };
-  // Compile a given CoffeeScript file into JavaScript.
-  exports.compileFile = function compileFile(path) {
-    var coffee;
-    coffee = OS.popen([coffeePath, "--print", "--no-wrap", path]);
-    checkForErrors(coffee);
-    return coffee.stdout.read();
-  };
-  // Compile a string of CoffeeScript into JavaScript.
-  exports.compile = function compile(source, flags) {
-    var coffee;
-    coffee = OS.popen([coffeePath, "--eval", "--no-wrap"].concat(flags || []));
-    coffee.stdin.write(source).flush().close();
-    checkForErrors(coffee);
-    return coffee.stdout.read();
-  };
-  // Evaluating a string of CoffeeScript first compiles it externally.
-  exports.evalCS = function evalCS(source, flags) {
-    return eval(exports.compile(source, flags));
-  };
-  // Make a factory for the CoffeeScript environment.
-  exports.makeNarwhalFactory = function makeNarwhalFactory(path) {
-    var code, factoryText;
-    code = exports.compileFile(path);
-    factoryText = "function(require,exports,module,system,print){" + code + "/**/\n}";
-    if (system.engine === "rhino") {
-      return Packages.org.mozilla.javascript.Context.getCurrentContext().compileFunction(global, factoryText, path, 0, null);
-    } else {
-      // eval requires parentheses, but parentheses break compileFunction.
-      return eval("(" + factoryText + ")");
-    }
-  };
-  // The Narwhal loader for '.coffee' files.
-  factories = {
-  };
-  loader = {
-  };
-  // Reload the coffee-script environment from source.
-  loader.reload = function reload(topId, path) {
-    return factories[topId] = function() {
-      return exports.makeNarwhalFactory(path);
-    };
-  };
-  // Ensure that the coffee-script environment is loaded.
-  loader.load = function load(topId, path) {
-    return factories[topId] = factories[topId] || this.reload(topId, path);
-  };
-  require.loader.loaders.unshift([".coffee", loader]);
-})();
\ No newline at end of file
diff --git a/package.json b/package.json
index dd664aa6..e5c8c289 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,7 @@
 {
     "name":         "coffee-script",
-    "lib":          "lib/narwhal",
     "description":  "Unfancy JavaScript",
     "keywords":     ["javascript", "language"],
     "author":       "Jeremy Ashkenas",
-    "version":      "0.3.2"
+    "version":      "0.5.0"
 }
diff --git a/src/coffee-script.coffee b/src/coffee-script.coffee
index 9d27c1c3..beeadd11 100644
--- a/src/coffee-script.coffee
+++ b/src/coffee-script.coffee
@@ -47,45 +47,3 @@ exports.print_tokens: (tokens) ->
   strings: for token in tokens
     '[' + token[0] + ' ' + token[1].toString().replace(/\n/, '\\n') + ']'
   puts strings.join(' ')
-
-
-#---------- Below this line is obsolete, for the Ruby compiler. ----------------
-
-# The path to the CoffeeScript executable.
-compiler: ->
-  path.normalize(path.dirname(__filename) + '/../../bin/coffee')
-
-# Compile a string over stdin, with global variables, for the REPL.
-exports.ruby_compile: (code, callback) ->
-  js: ''
-  coffee: process.createChildProcess compiler(), ['--eval', '--no-wrap', '--globals']
-
-  coffee.addListener 'output', (results) ->
-    js += results if results?
-
-  coffee.addListener 'exit', ->
-    callback(js)
-
-  coffee.write(code)
-  coffee.close()
-
-
-# Compile a list of CoffeeScript files on disk.
-exports.ruby_compile_files: (paths, callback) ->
-  js: ''
-  coffee: process.createChildProcess compiler(), ['--print'].concat(paths)
-
-  coffee.addListener 'output', (results) ->
-    js += results if results?
-
-  # NB: we have to add a mutex to make sure it doesn't get called twice.
-  exit_ran: false
-  coffee.addListener 'exit', ->
-    return if exit_ran
-    exit_ran: true
-    callback(js)
-
-  coffee.addListener 'error', (message) ->
-    return unless message
-    puts message
-    throw new Error "CoffeeScript compile error"
diff --git a/src/narwhal.coffee b/src/narwhal.coffee
new file mode 100644
index 00000000..91c2ba43
--- /dev/null
+++ b/src/narwhal.coffee
@@ -0,0 +1,42 @@
+# The Narwhal-compatibility wrapper for CoffeeScript.
+
+# Require external dependencies.
+os:       require 'os'
+file:     require 'file'
+coffee:   require './coffee-script'
+
+# Alias print to "puts", for Node.js compatibility:
+puts: print
+
+# Compile a string of CoffeeScript into JavaScript.
+exports.compile: (source) ->
+  coffee.compile source
+
+# Compile a given CoffeeScript file into JavaScript.
+exports.compileFile: (path) ->
+  coffee.compile file.read path
+
+# Make a factory for the CoffeeScript environment.
+exports.makeNarwhalFactory: (path) ->
+  code: exports.compileFile path
+  factoryText: "function(require,exports,module,system,print){" + code + "/**/\n}"
+  if system.engine is "rhino"
+    Packages.org.mozilla.javascript.Context.getCurrentContext().compileFunction(global, factoryText, path, 0, null)
+  else
+    # eval requires parentheses, but parentheses break compileFunction.
+    eval "(" + factoryText + ")"
+
+# The Narwhal loader for '.coffee' files.
+factories: {}
+loader:    {}
+
+# Reload the coffee-script environment from source.
+loader.reload: (topId, path) ->
+  factories[topId]: ->
+    exports.makeNarwhalFactory path
+
+# Ensure that the coffee-script environment is loaded.
+loader.load: (topId, path) ->
+  factories[topId] ||= this.reload topId, path
+
+require.loader.loaders.unshift [".coffee", loader]
diff --git a/src/narwhal/coffee-script.coffee b/src/narwhal/coffee-script.coffee
deleted file mode 100644
index 0a9f1bbb..00000000
--- a/src/narwhal/coffee-script.coffee
+++ /dev/null
@@ -1,77 +0,0 @@
-# The Narwhal-compatibility wrapper for CoffeeScript.
-
-# Require external dependencies.
-OS:       require 'os'
-File:     require 'file'
-Readline: require 'readline'
-
-# The path to the CoffeeScript Compiler.
-coffeePath: File.path(module.path).dirname().dirname().dirname().dirname().join('bin', 'coffee')
-
-# Our general-purpose error handler.
-checkForErrors: (coffeeProcess) ->
-  return true if coffeeProcess.wait() is 0
-  system.stderr.print coffeeProcess.stderr.read()
-  throw new Error "CoffeeScript compile error"
-
-# Alias print to "puts", for Node.js compatibility:
-puts: print
-
-# Run a simple REPL, round-tripping to the CoffeeScript compiler for every
-# command.
-exports.run: (args) ->
-  if args.length
-    for path, i in args
-      exports.evalCS File.read path
-      delete args[i]
-    return true
-
-  while true
-    try
-      system.stdout.write('coffee> ').flush()
-      result: exports.evalCS Readline.readline(), ['--globals']
-      print result if result isnt undefined
-    catch e
-      print e
-
-# Compile a given CoffeeScript file into JavaScript.
-exports.compileFile: (path) ->
-  coffee: OS.popen [coffeePath, "--print", "--no-wrap", path]
-  checkForErrors coffee
-  coffee.stdout.read()
-
-# Compile a string of CoffeeScript into JavaScript.
-exports.compile: (source, flags) ->
-  coffee: OS.popen [coffeePath, "--eval", "--no-wrap"].concat flags or []
-  coffee.stdin.write(source).flush().close()
-  checkForErrors coffee
-  coffee.stdout.read()
-
-# Evaluating a string of CoffeeScript first compiles it externally.
-exports.evalCS: (source, flags) ->
-  eval exports.compile source, flags
-
-# Make a factory for the CoffeeScript environment.
-exports.makeNarwhalFactory: (path) ->
-  code: exports.compileFile path
-  factoryText: "function(require,exports,module,system,print){" + code + "/**/\n}"
-  if system.engine is "rhino"
-    Packages.org.mozilla.javascript.Context.getCurrentContext().compileFunction(global, factoryText, path, 0, null)
-  else
-    # eval requires parentheses, but parentheses break compileFunction.
-    eval "(" + factoryText + ")"
-
-# The Narwhal loader for '.coffee' files.
-factories: {}
-loader:    {}
-
-# Reload the coffee-script environment from source.
-loader.reload: (topId, path) ->
-  factories[topId]: ->
-    exports.makeNarwhalFactory path
-
-# Ensure that the coffee-script environment is loaded.
-loader.load: (topId, path) ->
-  factories[topId] ||= this.reload topId, path
-
-require.loader.loaders.unshift [".coffee", loader]