diff --git a/conf/default.conf.php b/conf/default.conf.php
index 6b8a7c815d..8bbbaf9c4f 100644
--- a/conf/default.conf.php
+++ b/conf/default.conf.php
@@ -1,305 +1,314 @@
 <?php
 
 /*
  * Copyright 2011 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.
  */
 
 return array(
 
   // The root URI which Phabricator is installed on.
   // Example: "http://phabricator.example.com/"
   'phabricator.base-uri'        => null,
 
   // If you have multiple environments, provide the production environment URI
   // here so that emails, etc., generated in development/sandbox environments
   // contain the right links.
   'phabricator.production-uri'  => null,
 
   // The default PHID for users who haven't uploaded a profile image. It should
   // be 50x50px.
   'user.default-profile-image-phid' => 'PHID-FILE-f57aaefce707fc4060ef',
 
 // -- Access Control -------------------------------------------------------- //
 
   // Phabricator users have one of three access levels: "anyone", "verified",
   // or "admin". "anyone" means every user, including users who do not have
   // accounts or are not logged into the system. "verified" is users who have
   // accounts, are logged in, and have satisfied whatever verification steps
   // the configuration requires (e.g., email verification and/or manual
   // approval). "admin" is verified users with the "administrator" flag set.
 
   // These configuration options control which access level is required to read
   // data from Phabricator (e.g., view revisions and comments in Differential)
   // and write data to Phabricator (e.g., upload files and create diffs). By
   // default they are both set to "verified", meaning only verified user
   // accounts can interact with the system in any meaningful way.
 
   // If you are configuring an install for an open source project, you may
   // want to reduce the "phabricator.read-access" requirement to "anyone". This
   // will allow anyone to browse Phabricator content, even without logging in.
 
   // Alternatively, you could raise the "phabricator.write-access" requirement
   // to "admin", effectively creating a read-only install.
 
 
   // Controls the minimum access level required to read data from Phabricator
   // (e.g., view revisions in Differential). Allowed values are "anyone",
   // "verified", or "admin". Note that "anyone" includes users who are not
   // logged in! You should leave this at 'verified' unless you want your data
   // to be publicly readable (e.g., you are developing open source software).
   'phabricator.read-access'     => 'verified',
 
   // Controls the minimum access level required to write data to Phabricator
   // (e.g., create new revisions in Differential). Allowed values are
   // "verified" or "admin". Setting this to "admin" will effectively create a
   // read-only install.
   'phabricator.write-access'    => 'verified',
 
 
 // -- DarkConsole ----------------------------------------------------------- //
 
   // DarkConsole is a administrative debugging/profiling tool built into
   // Phabricator. You can leave it disabled unless you're developing against
   // Phabricator.
 
   // Determines whether or not DarkConsole is available. DarkConsole exposes
   // some data like queries and stack traces, so you should be careful about
   // turning it on in production (although users can not normally see it, even
   // if the deployment configuration enables it).
   'darkconsole.enabled'         => true,
 
   // Always enable DarkConsole, even for logged out users. This potentially
   // exposes sensitive information to users, so make sure untrusted users can
   // not access an install running in this mode. You should definitely leave
   // this off in production. It is only really useful for using DarkConsole
   // utilties to debug or profile logged-out pages. You must set
   // 'darkconsole.enabled' to use this option.
   'darkconsole.always-on'       => false,
 
 
   // Allows you to mask certain configuration values from appearing in the
   // "Config" tab of DarkConsole.
   'darkconsole.config-mask'     => array(
     'mysql.pass',
     'amazon-ses.secret-key',
     'recaptcha.private-key',
     'phabricator.csrf-key',
     'facebook.application-secret',
     'github.secret',
   ),
 
 // --  MySQL  --------------------------------------------------------------- //
 
   // The username to use when connecting to MySQL.
   'mysql.user' => 'root',
 
   // The password to use when connecting to MySQL.
   'mysql.pass' => '',
 
   // The MySQL server to connect to.
   'mysql.host' => 'localhost',
 
 
 // -- Email ----------------------------------------------------------------- //
 
   // Some Phabricator tools send email notifications, e.g. when Differential
   // revisions are updated or Maniphest tasks are changed. These options allow
   // you to configure how email is delivered.
 
   // You can test your mail setup by going to "MetaMTA" in the web interface,
   // clicking "Send New Message", and then composing a message.
 
   // Default address to send mail "From".
   'metamta.default-address'     => 'noreply@example.com',
 
   // Domain used to generate Message-IDs.
   'metamta.domain'              => 'example.com',
 
   // When a user takes an action which generates an email notification (like
   // commenting on a Differential revision), Phabricator can either send that
   // mail "From" the user's email address (like "alincoln@logcabin.com") or
   // "From" the 'metamta.default-address' address. The user experience is
   // generally better if Phabricator uses the user's real address as the "From"
   // since the messages are easier to organize when they appear in mail clients,
   // but this will only work if the server is authorized to send email on behalf
   // of the "From" domain. Practically, this means:
   //    - If you are doing an install for Example Corp and all the users will
   //      have corporate @corp.example.com addresses and any hosts Phabricator
   //      is running on are authorized to send email from corp.example.com,
   //      you can enable this to make the user experience a little better.
   //    - If you are doing an install for an open source project and your
   //      users will be registering via Facebook and using personal email
   //      addresses, you MUST NOT enable this or virtually all of your outgoing
   //      email will vanish into SFP blackholes.
   //    - If your install is anything else, you're much safer leaving this
   //      off since the risk in turning it on is that your outgoing mail will
   //      mostly never arrive.
   'metamta.can-send-as-user'    => false,
 
   // Adapter class to use to transmit mail to the MTA. The default uses
   // PHPMailerLite, which will invoke PHP's mail() function. This is appropriate
   // if mail() actually works on your host, but if you haven't configured mail
   // it may not be so great. You can also use Amazon SES, by changing this to
   // 'PhabricatorMailImplementationAmazonSESAdapter', signing up for SES, and
   // filling in your 'amazon-ses.access-key' and 'amazon-ses.secret-key' below.
   'metamta.mail-adapter'        =>
     'PhabricatorMailImplementationPHPMailerLiteAdapter',
 
   // When email is sent, try to hand it off to the MTA immediately. This may
   // be worth disabling if your MTA infrastructure is slow or unreliable. If you
   // disable this option, you must run the 'metamta_mta.php' daemon or mail
   // won't be handed off to the MTA. If you're using Amazon SES it can be a
   // little slugish sometimes so it may be worth disabling this and moving to
   // the daemon after you've got your install up and running. If you have a
   // properly configured local MTA it should not be necessary to disable this.
   'metamta.send-immediately'    => true,
 
   // If you're using Amazon SES to send email, provide your AWS access key
   // and AWS secret key here. To set up Amazon SES with Phabricator, you need
   // to:
   //  - Make sure 'metamta.mail-adapter' is set to:
   //    "PhabricatorMailImplementationAmazonSESAdapter"
   //  - Make sure 'metamta.can-send-as-user' is false.
   //  - Make sure 'metamta.default-address' is configured to something sensible.
   //  - Make sure 'metamta.default-address' is a validated SES "From" address.
   'amazon-ses.access-key'       =>  null,
   'amazon-ses.secret-key'       =>  null,
 
 
 // -- Auth ------------------------------------------------------------------ //
 
   // Can users login with a username/password, or by following the link from
   // a password reset email? You can disable this and configure one or more
   // OAuth providers instead.
   'auth.password-auth-enabled'  => true,
 
 
 // -- Accounts -------------------------------------------------------------- //
 
   // Is basic account information (email, real name, profile picture) editable?
   // If you set up Phabricator to automatically synchronize account information
   // from some other authoritative system, you can disable this to ensure
   // information remains consistent across both systems.
   'account.editable'            => true,
 
 
 // --  Facebook  ------------------------------------------------------------ //
 
   // Can users use Facebook credentials to login to Phabricator?
   'facebook.auth-enabled'       => false,
 
   // Can users use Facebook credentials to create new Phabricator accounts?
   'facebook.registration-enabled' => true,
 
   // Are Facebook accounts permanently linked to Phabricator accounts, or can
   // the user unlink them?
   'facebook.auth-permanent'     => false,
 
   // The Facebook "Application ID" to use for Facebook API access.
   'facebook.application-id'     => null,
 
   // The Facebook "Application Secret" to use for Facebook API access.
   'facebook.application-secret' => null,
 
 
 // -- Github ---------------------------------------------------------------- //
 
   // Can users use Github credentials to login to Phabricator?
   'github.auth-enabled'         => false,
 
   // Can users use Github credentials to create new Phabricator accounts?
   'github.registration-enabled' => true,
 
   // Are Github accounts permanently linked to Phabricator accounts, or can
   // the user unlink them?
   'github.auth-permanent'       => false,
 
   // The Github "Client ID" to use for Github API access.
   'github.application-id'       => null,
 
   // The Github "Secret" to use for Github API access.
   'github.application-secret'   => null,
 
 
 // -- Recaptcha ------------------------------------------------------------- //
 
   // Is Recaptcha enabled? If disabled, captchas will not appear.
   'recaptcha.enabled'           => false,
 
   // Your Recaptcha public key, obtained from Recaptcha.
   'recaptcha.public-key'        => null,
 
   // Your Recaptcha private key, obtained from Recaptcha.
   'recaptcha.private-key'       => null,
 
 
 // -- Misc ------------------------------------------------------------------ //
 
   // This is hashed with other inputs to generate CSRF tokens. If you want, you
   // can change it to some other string which is unique to your install. This
   // will make your install more secure in a vague, mostly theoretical way. But
   // it will take you like 3 seconds of mashing on your keyboard to set it up so
   // you might as well.
   'phabricator.csrf-key'        => '0b7ec0592e0a2829d8b71df2fa269b2c6172eca3',
 
   // Version string displayed in the footer. You probably should leave this
   // alone.
   'phabricator.version'         => 'UNSTABLE',
 
   // PHP requires that you set a timezone in your php.ini before using date
   // functions, or it will emit a warning. If this isn't possible (for instance,
   // because you are using HPHP) you can set some valid constant for
   // date_default_timezone_set() here and Phabricator will set it on your
   // behalf, silencing the warning.
   'phabricator.timezone'        => null,
 
 
 // -- Files ----------------------------------------------------------------- //
 
   // Lists which uploaded file types may be viewed in the browser. If a file
   // has a mime type which does not appear in this list, it will always be
   // downloaded instead of displayed. This is a security consideration: if a
   // user uploads a file of type "text/html" and it is displayed as
   // "text/html", they can eaily execute XSS attacks. This is also a usability
   // consideration, since browsers tend to freak out when viewing enormous
   // binary files.
   //
   // The keys in this array are viewable mime types; the values are the mime
   // types they will be delivered as when they are viewed in the browser.
   'files.viewable-mime-types' => array(
     'image/jpeg'  => 'image/jpeg',
     'image/jpg'   => 'image/jpg',
     'image/png'   => 'image/png',
     'image/gif'   => 'image/gif',
     'text/plain'  => 'text/plain; charset=utf-8',
   ),
 
+// -- Differential ---------------------------------------------------------- //
+
+  'differential.revision-custom-detail-renderer'  => null,
+
+
+// -- Maniphest ------------------------------------------------------------- //
+
+  'maniphest.enabled' => true,
+
 // -- Customization --------------------------------------------------------- //
 
   // Paths to additional phutil libraries to load.
   'load-libraries' => array(),
 
   'aphront.default-application-configuration-class' =>
     'AphrontDefaultApplicationConfiguration',
 
   'controller.oauth-registration' =>
     'PhabricatorOAuthDefaultRegistrationController',
 
 
   // Directory that phd (the Phabricator daemon control script) should use to
   // track running daemons.
   'phd.pid-directory' => '/var/tmp/phd',
 
 );
diff --git a/src/applications/differential/controller/revisionview/DifferentialRevisionViewController.php b/src/applications/differential/controller/revisionview/DifferentialRevisionViewController.php
index b510dd45bd..7c1a338088 100644
--- a/src/applications/differential/controller/revisionview/DifferentialRevisionViewController.php
+++ b/src/applications/differential/controller/revisionview/DifferentialRevisionViewController.php
@@ -1,851 +1,855 @@
 <?php
 
 /*
  * Copyright 2011 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.
  */
 
 class DifferentialRevisionViewController extends DifferentialController {
 
   private $revisionID;
 
   public function willProcessRequest(array $data) {
     $this->revisionID = $data['id'];
   }
 
   public function processRequest() {
 
     $request = $this->getRequest();
     $user = $request->getUser();
 
     $revision = id(new DifferentialRevision())->load($this->revisionID);
     if (!$revision) {
       return new Aphront404Response();
     }
 
     $revision->loadRelationships();
 
     $diffs = $revision->loadDiffs();
 
     if (!$diffs) {
       throw new Exception(
         "This revision has no diffs. Something has gone quite wrong.");
     }
 
     $diff_vs = $request->getInt('vs');
 
     $target = end($diffs);
     $target_id = $request->getInt('id');
     if ($target_id) {
       if (isset($diffs[$target_id])) {
         $target = $diffs[$target_id];
       }
     }
 
     $diffs = mpull($diffs, null, 'getID');
     if (empty($diffs[$diff_vs])) {
       $diff_vs = null;
     }
 
     list($changesets, $vs_map) =
       $this->loadChangesetsAndVsMap($diffs, $diff_vs, $target);
 
     $comments = $revision->loadComments();
     $comments = array_merge(
       $this->getImplicitComments($revision),
       $comments);
 
     $all_changesets = $changesets;
     $inlines = $this->loadInlineComments($comments, $all_changesets);
 
     $object_phids = array_merge(
       $revision->getReviewers(),
       $revision->getCCPHIDs(),
       $revision->loadCommitPHIDs(),
       array(
         $revision->getAuthorPHID(),
         $user->getPHID(),
       ),
       mpull($comments, 'getAuthorPHID'));
     foreach ($revision->getAttached() as $type => $phids) {
       foreach ($phids as $phid => $info) {
         $object_phids[] = $phid;
       }
     }
     $object_phids = array_unique($object_phids);
 
     $handles = id(new PhabricatorObjectHandleData($object_phids))
       ->loadHandles();
 
     $request_uri = $request->getRequestURI();
 
     $limit = 100;
     $large = $request->getStr('large');
     if (count($changesets) > $limit && !$large) {
       $count = number_format(count($changesets));
       $warning = new AphrontErrorView();
       $warning->setTitle('Very Large Diff');
       $warning->setSeverity(AphrontErrorView::SEVERITY_WARNING);
       $warning->setWidth(AphrontErrorView::WIDTH_WIDE);
       $warning->appendChild(
         "<p>This diff is very large and affects {$count} files. Only ".
         "the first {$limit} files are shown. ".
         "<strong>".
           phutil_render_tag(
             'a',
             array(
               'href' => $request_uri->alter('large', 'true'),
             ),
             'Show All Files').
         "</strong>");
       $warning = $warning->render();
 
       $visible_changesets = array_slice($changesets, 0, $limit, true);
     } else {
       $warning = null;
       $visible_changesets = $changesets;
     }
 
     $diff_properties = id(new DifferentialDiffProperty())->loadAllWhere(
       'diffID = %d AND name IN (%Ls)',
       $target->getID(),
       array(
         'arc:lint',
         'arc:unit',
       ));
     $diff_properties = mpull($diff_properties, 'getData', 'getName');
 
     $revision_detail = new DifferentialRevisionDetailView();
     $revision_detail->setRevision($revision);
 
     $custom_renderer_class = PhabricatorEnv::getEnvConfig(
       'differential.revision-custom-detail-renderer');
     if ($custom_renderer_class) {
       PhutilSymbolLoader::loadClass($custom_renderer_class);
       $custom_renderer =
         newv($custom_renderer_class, array());
     }
 
     $properties = $this->getRevisionProperties(
       $revision,
       $target,
       $handles,
       $diff_properties);
     if ($custom_renderer) {
       $properties = array_merge(
         $properties,
         $custom_renderer->generateProperties($revision, $target));
     }
 
     $revision_detail->setProperties($properties);
 
     $actions = $this->getRevisionActions($revision);
     if ($custom_renderer) {
       $actions = array_merge(
         $actions,
         $custom_renderer->generateActionLinks($revision, $target));
     }
 
     $revision_detail->setActions($actions);
 
     $revision_detail->setUser($user);
 
     $comment_view = new DifferentialRevisionCommentListView();
     $comment_view->setComments($comments);
     $comment_view->setHandles($handles);
     $comment_view->setInlineComments($inlines);
     $comment_view->setChangesets($all_changesets);
     $comment_view->setUser($user);
 
     $diff_history = new DifferentialRevisionUpdateHistoryView();
     $diff_history->setDiffs($diffs);
     $diff_history->setSelectedVersusDiffID($diff_vs);
     $diff_history->setSelectedDiffID($target->getID());
 
     $toc_view = new DifferentialDiffTableOfContentsView();
     $toc_view->setChangesets($changesets);
 
     $changeset_view = new DifferentialChangesetListView();
     $changeset_view->setChangesets($visible_changesets);
     $changeset_view->setEditable(true);
     $changeset_view->setRevision($revision);
     $changeset_view->setVsMap($vs_map);
 
     $draft = id(new PhabricatorDraft())->loadOneWhere(
       'authorPHID = %s AND draftKey = %s',
       $user->getPHID(),
       'differential-comment-'.$revision->getID());
     if ($draft) {
       $draft = $draft->getDraft();
     } else {
       $draft = null;
     }
 
     $comment_form = new DifferentialAddCommentView();
     $comment_form->setRevision($revision);
     $comment_form->setActions($this->getRevisionCommentActions($revision));
     $comment_form->setActionURI('/differential/comment/save/');
     $comment_form->setUser($user);
     $comment_form->setDraft($draft);
 
     return $this->buildStandardPageResponse(
       '<div class="differential-primary-pane">'.
         $revision_detail->render().
         $comment_view->render().
         $diff_history->render().
         $toc_view->render().
         $warning.
         $changeset_view->render().
         $comment_form->render().
       '</div>',
       array(
         'title' => $revision->getTitle(),
       ));
   }
 
   private function getImplicitComments(DifferentialRevision $revision) {
 
     $template = new DifferentialComment();
     $template->setAuthorPHID($revision->getAuthorPHID());
     $template->setRevisionID($revision->getID());
     $template->setDateCreated($revision->getDateCreated());
 
     $comments = array();
 
     if (strlen($revision->getSummary())) {
       $summary_comment = clone $template;
       $summary_comment->setContent($revision->getSummary());
       $summary_comment->setAction(DifferentialAction::ACTION_SUMMARIZE);
       $comments[] = $summary_comment;
     }
 
     if (strlen($revision->getTestPlan())) {
       $testplan_comment = clone $template;
       $testplan_comment->setContent($revision->getTestPlan());
       $testplan_comment->setAction(DifferentialAction::ACTION_TESTPLAN);
       $comments[] = $testplan_comment;
     }
 
     return $comments;
   }
 
   private function getRevisionProperties(
     DifferentialRevision $revision,
     DifferentialDiff $diff,
     array $handles,
     array $diff_properties) {
 
     $properties = array();
 
     $status = $revision->getStatus();
     $status = DifferentialRevisionStatus::getNameForRevisionStatus($status);
     $properties['Revision Status'] = '<strong>'.$status.'</strong>';
 
     $author = $handles[$revision->getAuthorPHID()];
     $properties['Author'] = $author->renderLink();
 
     $properties['Reviewers'] = $this->renderHandleLinkList(
       array_select_keys(
         $handles,
         $revision->getReviewers()));
 
     $properties['CCs'] = $this->renderHandleLinkList(
       array_select_keys(
         $handles,
         $revision->getCCPHIDs()));
 
     $host = $diff->getSourceMachine();
     if ($host) {
       $properties['Host'] = phutil_escape_html($host);
     }
 
     $path = $diff->getSourcePath();
     if ($path) {
       $branch = $diff->getBranch() ? ' ('.$diff->getBranch().')' : '';
       $properties['Path'] = phutil_escape_html("{$path} {$branch}");
     }
 
     $lstar = DifferentialRevisionUpdateHistoryView::renderDiffLintStar($diff);
     $lmsg = DifferentialRevisionUpdateHistoryView::getDiffLintMessage($diff);
     $ldata = idx($diff_properties, 'arc:lint');
     $ltail = null;
     if ($ldata) {
       $ldata = igroup($ldata, 'path');
       $lint_messages = array();
       foreach ($ldata as $path => $messages) {
         $message_markup = array();
         foreach ($messages as $message) {
           $path = idx($message, 'path');
           $line = idx($message, 'line');
 
           $code = idx($message, 'code');
           $severity = idx($message, 'severity');
 
           $name = idx($message, 'name');
           $description = idx($message, 'description');
 
           $message_markup[] =
             '<li>'.
               '<span class="lint-severity-'.phutil_escape_html($severity).'">'.
                 phutil_escape_html(ucwords($severity)).
               '</span>'.
               ' '.
               '('.phutil_escape_html($code).') '.
               phutil_escape_html($name).
               ' at line '.phutil_escape_html($line).
               '<p>'.phutil_escape_html($description).'</p>'.
             '</li>';
         }
         $lint_messages[] =
           '<li class="lint-file-block">'.
             'Lint for <strong>'.phutil_escape_html($path).'</strong>'.
             '<ul>'.implode("\n", $message_markup).'</ul>'.
           '</li>';
       }
       $ltail =
         '<div class="differential-lint-block">'.
           '<ul>'.
             implode("\n", $lint_messages).
           '</ul>'.
         '</div>';
     }
 
     $properties['Lint'] = $lstar.' '.$lmsg.$ltail;
 
     $ustar = DifferentialRevisionUpdateHistoryView::renderDiffUnitStar($diff);
     $umsg = DifferentialRevisionUpdateHistoryView::getDiffUnitMessage($diff);
 
     $udata = idx($diff_properties, 'arc:unit');
     $utail = null;
     if ($udata) {
       $unit_messages = array();
       foreach ($udata as $test) {
         $name = phutil_escape_html(idx($test, 'name'));
         $result = phutil_escape_html(idx($test, 'result'));
         $userdata = phutil_escape_html(idx($test, 'userdata'));
         if (strlen($userdata) > 256) {
           $userdata = substr($userdata, 0, 256).'...';
         }
         $userdata = str_replace("\n", '<br />', $userdata);
         $unit_messages[] =
           '<tr>'.
             '<th>'.$name.'</th>'.
             '<th class="unit-test-result">'.
               '<div class="result-'.$result.'">'.
                 strtoupper($result).
               '</div>'.
             '</th>'.
             '<td>'.$userdata.'</td>'.
           '</tr>';
       }
 
       $utail =
         '<div class="differential-unit-block">'.
           '<table class="differential-unit-table">'.
             implode("\n", $unit_messages).
           '</table>'.
         '</div>';
     }
 
     $properties['Unit'] = $ustar.' '.$umsg.$utail;
 
-    $tasks = $revision->getAttachedPHIDs(
-      PhabricatorPHIDConstants::PHID_TYPE_TASK);
-    if ($tasks) {
-      $links = array();
-      foreach ($tasks as $task_phid) {
-        $links[] = $handles[$task_phid]->renderLink();
+    if (PhabricatorEnv::getEnvConfig('maniphest.enabled')) {
+      $tasks = $revision->getAttachedPHIDs(
+        PhabricatorPHIDConstants::PHID_TYPE_TASK);
+      if ($tasks) {
+        $links = array();
+        foreach ($tasks as $task_phid) {
+          $links[] = $handles[$task_phid]->renderLink();
+        }
+        $properties['Maniphest Tasks'] = implode('<br />', $links);
       }
-      $properties['Maniphest Tasks'] = implode('<br />', $links);
     }
 
     $commit_phids = $revision->getCommitPHIDs();
     if ($commit_phids) {
       $links = array();
       foreach ($commit_phids as $commit_phid) {
         $links[] = $handles[$commit_phid]->renderLink();
       }
       $properties['Commits'] = implode('<br />', $links);
     }
 
     return $properties;
   }
 
   private function getRevisionActions(DifferentialRevision $revision) {
     $viewer_phid = $this->getRequest()->getUser()->getPHID();
     $viewer_is_owner = ($revision->getAuthorPHID() == $viewer_phid);
     $viewer_is_reviewer = in_array($viewer_phid, $revision->getReviewers());
     $viewer_is_cc = in_array($viewer_phid, $revision->getCCPHIDs());
     $status = $revision->getStatus();
     $revision_id = $revision->getID();
     $revision_phid = $revision->getPHID();
 
     $links = array();
 
     if ($viewer_is_owner) {
       $links[] = array(
         'class' => 'revision-edit',
         'href'  => "/differential/revision/edit/{$revision_id}/",
         'name'  => 'Edit Revision',
       );
     }
 
     if (!$viewer_is_owner && !$viewer_is_reviewer) {
       $action = $viewer_is_cc ? 'rem' : 'add';
       $links[] = array(
         'class'   => $viewer_is_cc ? 'subscribe-rem' : 'subscribe-add',
         'href'    => "/differential/subscribe/{$action}/{$revision_id}/",
         'name'    => $viewer_is_cc ? 'Unsubscribe' : 'Subscribe',
         'instant' => true,
       );
     } else {
       $links[] = array(
         'class' => 'subscribe-rem unavailable',
         'name'  => 'Automatically Subscribed',
       );
     }
 
     require_celerity_resource('phabricator-object-selector-css');
     require_celerity_resource('javelin-behavior-phabricator-object-selector');
 
-    $links[] = array(
-      'class' => 'attach-maniphest',
-      'name'  => 'Edit Maniphest Tasks',
-      'href'  => "/differential/attach/{$revision_id}/TASK/",
-      'sigil' => 'workflow',
-    );
+    if (PhabricatorEnv::getEnvConfig('maniphest.enabled')) {
+      $links[] = array(
+        'class' => 'attach-maniphest',
+        'name'  => 'Edit Maniphest Tasks',
+        'href'  => "/differential/attach/{$revision_id}/TASK/",
+        'sigil' => 'workflow',
+      );
+    }
 
     $links[] = array(
       'class' => 'transcripts-metamta',
       'name'  => 'MetaMTA Transcripts',
       'href'  => "/mail/?phid={$revision_phid}",
     );
 
     $links[] = array(
       'class' => 'transcripts-herald',
       'name'  => 'Herald Transcripts',
       'href'  => "/herald/transcript/?phid={$revision_phid}",
     );
 
     return $links;
   }
 
 
   private function renderHandleLinkList(array $list) {
     if (empty($list)) {
       return '<em>None</em>';
     }
     return implode(', ', mpull($list, 'renderLink'));
   }
 
   private function getRevisionCommentActions(DifferentialRevision $revision) {
 
     $actions = array(
       DifferentialAction::ACTION_COMMENT => true,
     );
 
     $viewer_phid = $this->getRequest()->getUser()->getPHID();
     $viewer_is_owner = ($viewer_phid == $revision->getAuthorPHID());
     $viewer_is_reviewer = in_array($viewer_phid, $revision->getReviewers());
 
     if ($viewer_is_owner) {
       switch ($revision->getStatus()) {
         case DifferentialRevisionStatus::NEEDS_REVIEW:
           $actions[DifferentialAction::ACTION_ABANDON] = true;
           break;
         case DifferentialRevisionStatus::NEEDS_REVISION:
         case DifferentialRevisionStatus::ACCEPTED:
           $actions[DifferentialAction::ACTION_ABANDON] = true;
           $actions[DifferentialAction::ACTION_REQUEST] = true;
           break;
         case DifferentialRevisionStatus::COMMITTED:
           break;
         case DifferentialRevisionStatus::ABANDONED:
           $actions[DifferentialAction::ACTION_RECLAIM] = true;
           break;
       }
     } else {
       switch ($revision->getStatus()) {
         case DifferentialRevisionStatus::NEEDS_REVIEW:
           $actions[DifferentialAction::ACTION_ACCEPT] = true;
           $actions[DifferentialAction::ACTION_REJECT] = true;
           $actions[DifferentialAction::ACTION_RESIGN] = $viewer_is_reviewer;
           break;
         case DifferentialRevisionStatus::NEEDS_REVISION:
           $actions[DifferentialAction::ACTION_ACCEPT] = true;
           $actions[DifferentialAction::ACTION_RESIGN] = $viewer_is_reviewer;
           break;
         case DifferentialRevisionStatus::ACCEPTED:
           $actions[DifferentialAction::ACTION_REJECT] = true;
           break;
         case DifferentialRevisionStatus::COMMITTED:
         case DifferentialRevisionStatus::ABANDONED:
           break;
       }
     }
 
     $actions[DifferentialAction::ACTION_ADDREVIEWERS] = true;
 
     return array_keys($actions);
   }
 
   private function loadInlineComments(array $comments, array &$changesets) {
 
     $inline_comments = array();
 
     $comment_ids = array_filter(mpull($comments, 'getID'));
     if (!$comment_ids) {
       return $inline_comments;
     }
 
     $inline_comments = id(new DifferentialInlineComment())
       ->loadAllWhere(
         'commentID in (%Ld)',
         $comment_ids);
 
     $load_changesets = array();
     foreach ($inline_comments as $inline) {
       $changeset_id = $inline->getChangesetID();
       if (isset($changesets[$changeset_id])) {
         continue;
       }
       $load_changesets[$changeset_id] = true;
     }
 
     $more_changesets = array();
     if ($load_changesets) {
       $changeset_ids = array_keys($load_changesets);
       $more_changesets += id(new DifferentialChangeset())
         ->loadAllWhere(
           'id IN (%Ld)',
           $changeset_ids);
     }
 
     if ($more_changesets) {
       $changesets += $more_changesets;
       $changesets = msort($changesets, 'getSortKey');
     }
 
     return $inline_comments;
   }
 
   private function loadChangesetsAndVsMap(array $diffs, $diff_vs, $target) {
     $load_ids = array();
     if ($diff_vs) {
       $load_ids[] = $diff_vs;
     }
     $load_ids[] = $target->getID();
 
     $raw_changesets = id(new DifferentialChangeset())
       ->loadAllWhere(
         'diffID IN (%Ld)',
         $load_ids);
     $changeset_groups = mgroup($raw_changesets, 'getDiffID');
 
     $changesets = idx($changeset_groups, $target->getID(), array());
     $changesets = mpull($changesets, null, 'getID');
 
     $vs_map = array();
     if ($diff_vs) {
       $vs_changesets = idx($changeset_groups, $diff_vs, array());
       $vs_changesets = mpull($vs_changesets, null, 'getFilename');
       foreach ($changesets as $key => $changeset) {
         $file = $changeset->getFilename();
         if (isset($vs_changesets[$file])) {
           $vs_map[$changeset->getID()] = $vs_changesets[$file]->getID();
           unset($vs_changesets[$file]);
         }
       }
       foreach ($vs_changesets as $changeset) {
         $changesets[$changeset->getID()] = $changeset;
         $vs_map[$changeset->getID()] = -1;
       }
     }
 
     $changesets = msort($changesets, 'getSortKey');
 
     return array($changesets, $vs_map);
   }
 
 }
 /*
 
 
   protected function getSandcastleURI(Diff $diff) {
     $uri = $this->getDiffProperty($diff, 'facebook:sandcastle_uri');
     if (!$uri) {
       $uri = $diff->getSandboxURL();
     }
     return $uri;
   }
 
   protected function getDiffProperty(Diff $diff, $property, $default = null) {
     $diff_id = $diff->getID();
     if (empty($this->diffProperties[$diff_id])) {
       $props = id(new DifferentialDiffProperty())
         ->loadAllWhere('diffID = %s', $diff_id);
       $dict = array_pull($props, 'getData', 'getName');
       $this->diffProperties[$diff_id] = $dict;
     }
     return idx($this->diffProperties[$diff_id], $property, $default);
   }
 
     $diff_table->appendChild(
       <tr>
         <td colspan="8" class="diff-differ-submit">
           <label>Whitespace Changes:</label>
           {id(<select name="whitespace" />)->setOptions(
             array(
               'ignore-all'      => 'Ignore All',
               'ignore-trailing' => 'Ignore Trailing',
               'show-all'        => 'Show All',
             ), $request->getStr('whitespace'))}{' '}
           <button type="submit">Show Diff</button>
         </td>
       </tr>);
 
     $load_ids = array_filter(array($old, $diff->getID()));
 
     $viewer_id = $this->getRequest()->getViewerContext()->getUserID();
 
     $raw_objects = queryfx_all(
       smc_get_db('cdb.differential', 'r'),
       'SELECT * FROM changeset WHERE changeset.diffID IN (%Ld)',
       $load_ids);
 
     $raw_objects = array_group($raw_objects, 'diffID');
     $objects = $raw_objects[$diff->getID()];
 
     if (!$objects) {
       $changesets = array();
     } else {
       $changesets = id(new DifferentialChangeset())->loadAllFromArray($objects);
     }
 
 
 
     $feedback = id(new DifferentialFeedback())->loadAllWithRevision($revision);
     $feedback = array_merge($implied_feedback, $feedback);
 
     $inline_comments = $this->loadInlineComments($feedback, $changesets);
 
     $diff_map = array();
     $diffs = array_psort($diffs, 'getID');
     foreach ($diffs as $diff) {
       $diff_map[$diff->getID()] = count($diff_map) + 1;
     }
     $visible_changesets = array_fill_keys($visible_changesets, true);
     $hidden_changesets = array();
     foreach ($changesets as $changeset) {
       $id = $changeset->getID();
       if (isset($visible_changesets[$id])) {
         continue;
       }
       $hidden_changesets[$id] = $diff_map[$changeset->getDiffID()];
     }
 
 
     $engine = new RemarkupEngine();
     $engine->enableFeature(RemarkupEngine::FEATURE_GUESS_IMAGES);
     $engine->enableFeature(RemarkupEngine::FEATURE_YOUTUBE);
     $engine->setCurrentSandcastle($this->getSandcastleURI($target_diff));
 
     $syntax_link =
       <a href={'http://www.intern.facebook.com/intern/wiki/index.php' .
                '/Articles/Remarkup_Syntax_Reference'}
          target="_blank"
          tabindex="4">Remarkup Reference</a>;
 
 
     $notice = null;
     if ($this->getRequest()->getBool('diff_changed')) {
       $notice =
         <tools:notice title="Revision Updated Recently">
           This revision was updated with a <strong>new diff</strong> while you
           were providing feedback. Your inline comments appear on the
           <strong>old diff</strong>.
         </tools:notice>;
     }
 
     $engineering_repository_id = RepositoryRef::getByCallsign('E')->getID();
     $svn_revision = $revision->getSVNRevision();
     if ($status == DifferentialConstants::COMMITTED &&
         $svn_revision &&
         $revision->getRepositoryID() == $engineering_repository_id) {
       $href = '/intern/push/request.php?rev='.$svn_revision;
       $href = RedirectURI($href)->setTier('intern');
       $links[] = array(
         'merge',
         <a href={$href} id="ask_for_merge_link">Ask for Merge</a>,
       );
     }
 
   }
 
 
   protected function renderDiffPropertyMoreLink(Diff $diff, $name) {
     $target = <div class="star-more"
                    style="display: none;">
                 <div class="star-loading">Loading...</div>
               </div>;
     $meta = array(
       'target'  => $target->requireUniqueID(),
       'uri'     => '/differential/diffprop/'.$diff->getID().'/'.$name.'/',
     );
     $more =
       <span sigil="star-link-container">
         &middot;
         <a mustcapture="true"
                  sigil="star-more"
                   href="#"
                   meta={$meta}>Show Details</a>
       </span>;
     return <x:frag>{$more}{$target}</x:frag>;
   }
 
 
 
   protected function getRevisionStatusDisplay(DifferentialRevision $revision) {
     $viewer_id = $this->getRequest()->getViewerContext()->getUserID();
     $viewer_is_owner = ($viewer_id == $revision->getOwnerID());
     $status = $revision->getStatus();
 
     $more = null;
     switch ($status) {
       case DifferentialConstants::NEEDS_REVIEW:
         $message = 'Pending Review';
         break;
       case DifferentialConstants::NEEDS_REVISION:
         $message = 'Awaiting Revision';
         if ($viewer_is_owner) {
           $more = 'Make the requested changes and update the revision.';
         }
         break;
       case DifferentialConstants::ACCEPTED:
         $message = 'Ready for Commit';
         if ($viewer_is_owner) {
           $more =
             <x:frag>
               Run <tt>arc commit</tt> (svn) or <tt>arc amend</tt> (git) to
               proceed.
             </x:frag>;
         }
         break;
       case DifferentialConstants::COMMITTED:
         $message = 'Committed';
         $ref = $revision->getRevisionRef();
         $more = $ref
                 ? (<a href={URI($ref->getDetailURL())}>
                      {$ref->getName()}
                    </a>)
                 : null;
 
         $engineering_repository_id = RepositoryRef::getByCallsign('E')->getID();
         if ($revision->getSVNRevision() &&
             $revision->getRepositoryID() == $engineering_repository_id) {
           Javelin::initBehavior(
             'differential-revtracker-status',
             array(
               'uri' => '/differential/revtracker/'.$revision->getID().'/',
               'statusId' => 'revtracker_status',
               'mergeLinkId' => 'ask_for_merge_link',
             ));
         }
         break;
       case DifferentialConstants::ABANDONED:
         $message = 'Abandoned';
         break;
       default:
         throw new Exception("Unknown revision status.");
     }
 
     if ($more) {
       $message =
         <x:frag>
           <strong id="revtracker_status">{$message}</strong>
           &middot; {$more}
         </x:frag>;
     } else {
       $message = <strong id="revtracker_status">{$message}</strong>;
     }
 
     return $message;
   }
 
 }
   protected function getDetailFields(
     DifferentialRevision $revision,
     Diff $diff,
     array $handles) {
 
     $sandcastle = $this->getSandcastleURI($diff);
     if ($sandcastle) {
       $fields['Sandcastle'] = <a href={$sandcastle}>{$sandcastle}</a>;
     }
 
 
     $blame_rev = $revision->getSvnBlameRevision();
     if ($blame_rev) {
       if ($revision->getRepositoryRef() && is_numeric($blame_rev)) {
         $ref = new RevisionRef($revision->getRepositoryRef(), $blame_rev);
         $fields['Blame Revision'] =
           <a href={URI($ref->getDetailURL())}>
             {$ref->getName()}
           </a>;
       } else {
         $fields['Blame Revision'] = $blame_rev;
       }
     }
 
 
     $bugzilla_id = $revision->getBugzillaID();
     if ($bugzilla_id) {
       $href = 'http://bugs.developers.facebook.com/show_bug.cgi?id='.
         $bugzilla_id;
       $fields['Bugzilla'] = <a href={$href}>{'#'.$bugzilla_id}</a>;
     }
 
     $fields['Apply Patch'] = <tt>arc patch --revision {$revision->getID()}</tt>;
 
     if ($diff->getParentRevisionID()) {
       $parent = id(new DifferentialRevision())->load(
         $diff->getParentRevisionID());
       if ($parent) {
         $fields['Depends On'] =
           <a href={$parent->getURI()}>
             D{$parent->getID()}: {$parent->getName()}
           </a>;
       }
     }
 
     Javelin::initBehavior('differential-star-more');
     if ($unit_details) {
       $fields['Unit Tests'] =
         <x:frag>
           {$fields['Unit Tests']}
           {$this->renderDiffPropertyMoreLink($diff, 'unit')}
         </x:frag>;
     }
 
     $platform_impact = $revision->getPlatformImpact();
     if ($platform_impact) {
       $fields['Platform Impact'] =
         <text linebreaks="true">{$platform_impact}</text>;
     }
 
     return $fields;
   }
 
 
 */