diff --git a/.divinerconfig b/.divinerconfig
index 56e1cf23..0325d0fb 100644
--- a/.divinerconfig
+++ b/.divinerconfig
@@ -13,7 +13,6 @@
     "diff" : "Diff and Changeset APIs",
     "differential" : "Differential Integration",
     "workingcopy" : "Working Copy APIs",
-    "module" : "Phutil Module System",
     "testcase" : "Test Cases"
   },
   "engines" : [
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 8b1178d7..fdfda1a8 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -130,7 +130,6 @@ phutil_register_library_map(array(
     'NoseTestEngine' => 'unit/engine/NoseTestEngine.php',
     'PhpunitTestEngine' => 'unit/engine/PhpunitTestEngine.php',
     'PhutilLintEngine' => 'lint/engine/PhutilLintEngine.php',
-    'PhutilModuleRequirements' => 'parser/PhutilModuleRequirements.php',
     'PhutilUnitTestEngine' => 'unit/engine/PhutilUnitTestEngine.php',
     'PhutilUnitTestEngineTestCase' => 'unit/engine/__tests__/PhutilUnitTestEngineTestCase.php',
     'UnitTestableArcanistLintEngine' => 'lint/engine/UnitTestableArcanistLintEngine.php',
diff --git a/src/parser/PhutilModuleRequirements.php b/src/parser/PhutilModuleRequirements.php
deleted file mode 100644
index 4b50e4b9..00000000
--- a/src/parser/PhutilModuleRequirements.php
+++ /dev/null
@@ -1,177 +0,0 @@
-<?php
-
-/*
- * Copyright 2012 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * Lists dependencies and requirements for a module.
- *
- * @group module
- */
-final class PhutilModuleRequirements {
-
-  protected $builtins = array(
-    'class'       => array(),
-    'interface'   => array(),
-    'function'    => array(),
-  );
-
-  protected $requires = array(
-    'class'       => array(),
-    'interface'   => array(),
-    'function'    => array(),
-    'source'      => array(),
-    'module'      => array(),
-  );
-
-  protected $declares = array(
-    'class'       => array(),
-    'interface'   => array(),
-    'function'    => array(),
-    'source'      => array(),
-  );
-
-  protected $chain = array(
-  );
-
-  protected $currentFile;
-  protected $messages = array(
-  );
-
-  public function setCurrentFile($current_file) {
-    $this->currentFile = $current_file;
-    return $this;
-  }
-
-  protected function getCurrentFile() {
-    return $this->currentFile;
-  }
-
-  protected function getWhere(XHPASTNode $where) {
-    return $this->getCurrentFile().':'.$where->getOffset();
-  }
-
-  public function addClassDeclaration(XHPASTNode $where, $name) {
-    return $this->addDeclaration('class', $where, $name);
-  }
-
-  public function addFunctionDeclaration(XHPASTNode $where, $name) {
-    return $this->addDeclaration('function', $where, $name);
-  }
-
-  public function addInterfaceDeclaration(XHPASTNode $where, $name) {
-    return $this->addDeclaration('interface', $where, $name);
-  }
-
-  public function addSourceDeclaration($name) {
-    $this->declares['source'][$name] = true;
-    return $this;
-  }
-
-  protected function addDeclaration($type, XHPASTNode $where, $name) {
-    $this->declares[$type][$name] = $this->getWhere($where);
-    return $this;
-  }
-
-  protected function addDependency($type, XHPASTNode $where, $name) {
-    if (isset($this->builtins[$type][$name])) {
-      return $this;
-    }
-    if (empty($this->requires[$type][$name])) {
-      $this->requires[$type][$name] = array();
-    }
-    $this->requires[$type][$name][] = $this->getWhere($where);
-    return $this;
-  }
-
-  public function addClassDependency($child, XHPASTNode $where, $name) {
-    if ($child !== null) {
-      if (empty($this->builtins['class'][$name])) {
-        $this->chain['class'][$child] = $name;
-      }
-    }
-    return $this->addDependency('class', $where, $name);
-  }
-
-  public function addFunctionDependency(XHPASTNode $where, $name) {
-    return $this->addDependency('function', $where, $name);
-  }
-
-  public function addInterfaceDependency($child, XHPASTNode $where, $name) {
-    if ($child !== null) {
-      if (empty($this->builtins['interface'][$name])) {
-        $this->chain['interface'][$child][] = $name;
-      }
-    }
-    return $this->addDependency('interface', $where, $name);
-  }
-
-  public function addSourceDependency(XHPASTNode $where, $name) {
-    return $this->addDependency('source', $where, $name);
-  }
-
-  public function addModuleDependency(XHPASTNode $where, $name) {
-    return $this->addDependency('module', $where, $name);
-  }
-
-  public function addBuiltins(array $builtins) {
-    foreach ($builtins as $type => $symbol_set) {
-      $this->builtins[$type] += $symbol_set;
-    }
-    return $this;
-  }
-
-  public function addRawLint($code, $message) {
-    $this->messages[] = array(
-      null,
-      null,
-      $code,
-      $message);
-    return $this;
-  }
-
-  public function addLint(XHPASTNode $where, $text, $code, $message) {
-    $this->messages[] = array(
-      $this->getWhere($where),
-      $text,
-      $code,
-      $message);
-    return $this;
-  }
-
-  public function toDictionary() {
-
-    // Remove all dependencies on things which we declare since they're never
-    // useful and guaranteed to be satisfied.
-    foreach ($this->declares as $type => $things) {
-      if ($type == 'source') {
-        // Source is treated specially since we only reconcile it locally.
-        continue;
-      }
-      foreach ($things as $name => $where) {
-        unset($this->requires[$type][$name]);
-      }
-    }
-
-    return array(
-      'declares' => $this->declares,
-      'requires' => $this->requires,
-      'chain'    => $this->chain,
-      'messages' => $this->messages,
-    );
-  }
-
-}