--- a/.gitignore
+++ b/.gitignore
@@ -95,18 +95,18 @@ embedding/ios/GeckoEmbed/GeckoEmbed.xcod
 
 # Ignore mozharness execution files
 testing/mozharness/.tox/
 testing/mozharness/build/
 testing/mozharness/logs/
 testing/mozharness/.coverage
 testing/mozharness/nosetests.xml
 
-# Ignore node_modules from eslint-plugin-mozilla
-testing/eslint-plugin-mozilla/node_modules/
+# Ignore node_modules
+testing/eslint/node_modules/
 
 # Ignore talos virtualenv and tp5n files.
 # The tp5n set is supposed to be decompressed at
 # testing/talos/talos/page_load_test/tp5n in order to run tests like tps
 # locally. Similarly, running talos requires a Python package virtual
 # environment. Both the virtual environment and tp5n files end up littering
 # the status command, so we ignore them.
 testing/talos/.Python

--- a/.hgignore
+++ b/.hgignore
@@ -111,18 +111,18 @@ GPATH
 ^testing/mozharness/build/
 ^testing/mozharness/logs/
 ^testing/mozharness/.coverage
 ^testing/mozharness/nosetests.xml
 
 # Ignore tox generated dir
 .tox/
 
-# Ignore node_modules from eslint-plugin-mozilla
-^testing/eslint-plugin-mozilla/node_modules/
+# Ignore node_modules
+^testing/eslint/node_modules/
 
 # Ignore talos virtualenv and tp5n files.
 # The tp5n set is supposed to be decompressed at
 # testing/talos/talos/page_load_test/tp5n in order to run tests like tps
 # locally. Similarly, running talos requires a Python package virtual
 # environment. Both the virtual environment and tp5n files end up littering
 # the status command, so we ignore them.
 ^testing/talos/.Python

--- a/python/mach_commands.py
+++ b/python/mach_commands.py
@@ -1,14 +1,15 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 from __future__ import absolute_import, print_function, unicode_literals
 
+import __main__
 import argparse
 import logging
 import mozpack.path as mozpath
 import os
 import platform
 import subprocess
 import sys
 import which
@@ -228,17 +229,17 @@ class MachCommands(MachCommandBase):
             binary = os.environ.get('ESLINT', None)
             if not binary:
                 try:
                     binary = which.which('eslint')
                 except which.WhichError:
                     npmPath = self.getNodeOrNpmPath("npm")
                     if npmPath:
                         try:
-                            output = subprocess.check_output([npmPath, "bin", "-g"],
+                            output = subprocess.check_output([npmPath, "bin"],
                                                              stderr=subprocess.STDOUT)
                             if output:
                                 base = output.split("\n")[0].strip()
                                 binary = os.path.join(base, "eslint")
                                 if not os.path.isfile(binary):
                                     binary = None
                         except (subprocess.CalledProcessError, OSError):
                             pass
@@ -280,50 +281,65 @@ class MachCommands(MachCommandBase):
 
     def eslint_setup(self, update_only=False):
         """Ensure eslint is optimally configured.
 
         This command will inspect your eslint configuration and
         guide you through an interactive wizard helping you configure
         eslint for optimal use on Mozilla projects.
         """
+        orig_cwd = os.getcwd()
         sys.path.append(os.path.dirname(__file__))
 
+        root = self.get_project_root()
+        module_path = root + "/testing/eslint"
+
+        # npm sometimes fails to respect cwd when it is run using check_call so
+        # we manually switch folders here instead.
+        os.chdir(module_path)
+
         npmPath = self.getNodeOrNpmPath("npm")
         if not npmPath:
             return 1
 
+        # eslint-plugin-mozilla should **never** be installed (linked) globally.
+        # Let's unlink it just in case.
+        self.callProcess("remove-eslint-plugin-mozilla",
+                         [npmPath, "unlink", "eslint-plugin-mozilla"])
+
         # Install eslint.
         # Note that that's the version currently compatible with the mozilla
         # eslint plugin.
         success = self.callProcess("eslint",
-                                   [npmPath, "install", "eslint@%s" % ESLINT_VERSION, "-g"])
+                                   [npmPath, "install", "eslint@2.9.0"])
         if not success:
             return 1
 
         # Install eslint-plugin-mozilla.
         success = self.callProcess("eslint-plugin-mozilla",
-                                   [npmPath, "link"],
-                                   "testing/eslint-plugin-mozilla")
+                                   [npmPath, "install", os.path.join(module_path, "eslint-plugin-mozilla")])
         if not success:
             return 1
 
         # Install eslint-plugin-html.
         success = self.callProcess("eslint-plugin-html",
-                                   [npmPath, "install", "eslint-plugin-html@1.4.0", "-g"])
+                                   [npmPath, "install", "eslint-plugin-html@1.4.0"])
         if not success:
             return 1
 
         # Install eslint-plugin-react.
         success = self.callProcess("eslint-plugin-react",
-                                   [npmPath, "install", "eslint-plugin-react@4.2.3", "-g"])
+                                   [npmPath, "install", "eslint-plugin-react@4.2.3"])
         if not success:
             return 1
 
         print("\nESLint and approved plugins installed successfully!")
+        print("\nNOTE: Your local eslint binary is at %s/node_modules/.bin/eslint\n" % module_path)
+
+        os.chdir(orig_cwd)
 
     def callProcess(self, name, cmd, cwd=None):
         print("\nInstalling %s using \"%s\"..." % (name, " ".join(cmd)))
 
         try:
             with open(os.devnull, "w") as fnull:
                 subprocess.check_call(cmd, cwd=cwd, stdout=fnull)
         except subprocess.CalledProcessError:
@@ -394,8 +410,12 @@ class MachCommands(MachCommandBase):
                                                   stderr=subprocess.STDOUT)
             if minversion:
                 # nodejs prefixes its version strings with "v"
                 version = LooseVersion(version_str.lstrip('v'))
                 return version >= minversion
             return True
         except (subprocess.CalledProcessError, OSError):
             return False
+
+    def get_project_root(self):
+        fullpath = os.path.abspath(sys.modules['__main__'].__file__)
+        return os.path.dirname(fullpath)

--- a/testing/docker/lint/Dockerfile
+++ b/testing/docker/lint/Dockerfile
@@ -1,19 +1,21 @@
 FROM          node:4.2
 MAINTAINER    Dave Townsend <dtownsend@oxymoronical.com>
 
 RUN useradd -d /home/worker -s /bin/bash -m worker
 WORKDIR /home/worker
 
 # install necessary npm packages
 RUN           npm install -g taskcluster-vcs@2.3.12
-RUN           npm install -g eslint@2.9.0
-RUN           npm install -g eslint-plugin-html@1.4.0
-RUN           npm install -g eslint-plugin-react@4.2.3
+
+# Install tooltool directly from github.
+RUN mkdir /build
+ADD https://raw.githubusercontent.com/mozilla/build-tooltool/master/tooltool.py /build/tooltool.py
+RUN chmod +rx /build/tooltool.py
 
 # Set variable normally configured at login, by the shells parent process, these
 # are taken from GNU su manual
 ENV           HOME          /home/worker
 ENV           SHELL         /bin/bash
 ENV           USER          worker
 ENV           LOGNAME       worker
 ENV           HOSTNAME      taskcluster-worker

rename from testing/eslint-plugin-mozilla/LICENSE
rename to testing/eslint/eslint-plugin-mozilla/LICENSE

rename from testing/eslint-plugin-mozilla/docs/balanced-listeners.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/balanced-listeners.rst

rename from testing/eslint-plugin-mozilla/docs/import-browserjs-globals.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/import-browserjs-globals.rst

rename from testing/eslint-plugin-mozilla/docs/import-globals.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/import-globals.rst

rename from testing/eslint-plugin-mozilla/docs/import-headjs-globals.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/import-headjs-globals.rst

rename from testing/eslint-plugin-mozilla/docs/index.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/index.rst

rename from testing/eslint-plugin-mozilla/docs/mark-test-function-used.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/mark-test-function-used.rst

rename from testing/eslint-plugin-mozilla/docs/no-aArgs.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/no-aArgs.rst

rename from testing/eslint-plugin-mozilla/docs/no-cpows-in-tests.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/no-cpows-in-tests.rst

rename from testing/eslint-plugin-mozilla/docs/reject-importGlobalProperties.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/reject-importGlobalProperties.rst

rename from testing/eslint-plugin-mozilla/docs/var-only-at-top-level.rst
rename to testing/eslint/eslint-plugin-mozilla/docs/var-only-at-top-level.rst

rename from testing/eslint-plugin-mozilla/lib/globals.js
rename to testing/eslint/eslint-plugin-mozilla/lib/globals.js

rename from testing/eslint-plugin-mozilla/lib/helpers.js
rename to testing/eslint/eslint-plugin-mozilla/lib/helpers.js

rename from testing/eslint-plugin-mozilla/lib/index.js
rename to testing/eslint/eslint-plugin-mozilla/lib/index.js

rename from testing/eslint-plugin-mozilla/lib/processors/xbl-bindings.js
rename to testing/eslint/eslint-plugin-mozilla/lib/processors/xbl-bindings.js

rename from testing/eslint-plugin-mozilla/lib/rules/.eslintrc
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/.eslintrc

rename from testing/eslint-plugin-mozilla/lib/rules/balanced-listeners.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/balanced-listeners.js

rename from testing/eslint-plugin-mozilla/lib/rules/import-browserjs-globals.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/import-browserjs-globals.js

rename from testing/eslint-plugin-mozilla/lib/rules/import-globals.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/import-globals.js

rename from testing/eslint-plugin-mozilla/lib/rules/import-headjs-globals.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/import-headjs-globals.js

rename from testing/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js

rename from testing/eslint-plugin-mozilla/lib/rules/no-aArgs.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/no-aArgs.js

rename from testing/eslint-plugin-mozilla/lib/rules/no-cpows-in-tests.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/no-cpows-in-tests.js

rename from testing/eslint-plugin-mozilla/lib/rules/reject-importGlobalProperties.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/reject-importGlobalProperties.js

rename from testing/eslint-plugin-mozilla/lib/rules/var-only-at-top-level.js
rename to testing/eslint/eslint-plugin-mozilla/lib/rules/var-only-at-top-level.js

rename from testing/eslint-plugin-mozilla/moz.build
rename to testing/eslint/eslint-plugin-mozilla/moz.build

rename from testing/eslint-plugin-mozilla/package.json
rename to testing/eslint/eslint-plugin-mozilla/package.json

new file mode 100644
--- /dev/null
+++ b/testing/eslint/manifest.tt
@@ -0,0 +1,9 @@
+[
+{
+"size": 2218185,
+"visibility": "public",
+"digest": "ea0065d8986ceffb2870fbc8489c1c2e06afc859df4d93ce8ea87c5accb10822a30e16dbde72c19c9a03fa434f136969089467e629a18c3e6d8601645436fff9",
+"algorithm": "sha512",
+"filename": "eslint.tar.gz"
+}
+]

new file mode 100644
--- /dev/null
+++ b/testing/eslint/npm-shrinkwrap.json
@@ -0,0 +1,704 @@
+{
+  "dependencies": {
+    "acorn": {
+      "version": "3.1.0",
+      "from": "acorn@>=3.1.0 <4.0.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.1.0.tgz"
+    },
+    "acorn-jsx": {
+      "version": "3.0.1",
+      "from": "acorn-jsx@>=3.0.0 <4.0.0",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz"
+    },
+    "ansi-escapes": {
+      "version": "1.4.0",
+      "from": "ansi-escapes@>=1.1.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz"
+    },
+    "ansi-regex": {
+      "version": "2.0.0",
+      "from": "ansi-regex@>=2.0.0 <3.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.0.0.tgz"
+    },
+    "ansi-styles": {
+      "version": "2.2.1",
+      "from": "ansi-styles@>=2.2.1 <3.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz"
+    },
+    "argparse": {
+      "version": "1.0.7",
+      "from": "argparse@>=1.0.7 <2.0.0",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.7.tgz"
+    },
+    "array-union": {
+      "version": "1.0.1",
+      "from": "array-union@>=1.0.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.1.tgz"
+    },
+    "array-uniq": {
+      "version": "1.0.2",
+      "from": "array-uniq@>=1.0.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.2.tgz"
+    },
+    "arrify": {
+      "version": "1.0.1",
+      "from": "arrify@>=1.0.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz"
+    },
+    "balanced-match": {
+      "version": "0.4.1",
+      "from": "balanced-match@>=0.4.1 <0.5.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-0.4.1.tgz"
+    },
+    "bluebird": {
+      "version": "3.3.5",
+      "from": "bluebird@>=3.1.1 <4.0.0",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.3.5.tgz"
+    },
+    "brace-expansion": {
+      "version": "1.1.4",
+      "from": "brace-expansion@>=1.0.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.4.tgz"
+    },
+    "caller-path": {
+      "version": "0.1.0",
+      "from": "caller-path@>=0.1.0 <0.2.0",
+      "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-0.1.0.tgz"
+    },
+    "callsites": {
+      "version": "0.2.0",
+      "from": "callsites@>=0.2.0 <0.3.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-0.2.0.tgz"
+    },
+    "chalk": {
+      "version": "1.1.3",
+      "from": "chalk@>=1.1.3 <2.0.0",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz"
+    },
+    "cli-cursor": {
+      "version": "1.0.2",
+      "from": "cli-cursor@>=1.0.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-1.0.2.tgz"
+    },
+    "cli-width": {
+      "version": "2.1.0",
+      "from": "cli-width@>=2.0.0 <3.0.0",
+      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.1.0.tgz"
+    },
+    "code-point-at": {
+      "version": "1.0.0",
+      "from": "code-point-at@>=1.0.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.0.0.tgz"
+    },
+    "concat-map": {
+      "version": "0.0.1",
+      "from": "concat-map@0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz"
+    },
+    "concat-stream": {
+      "version": "1.5.1",
+      "from": "concat-stream@>=1.4.6 <2.0.0",
+      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.5.1.tgz"
+    },
+    "core-util-is": {
+      "version": "1.0.2",
+      "from": "core-util-is@>=1.0.0 <1.1.0",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz"
+    },
+    "d": {
+      "version": "0.1.1",
+      "from": "d@>=0.1.1 <0.2.0",
+      "resolved": "https://registry.npmjs.org/d/-/d-0.1.1.tgz"
+    },
+    "debug": {
+      "version": "2.2.0",
+      "from": "debug@>=2.1.1 <3.0.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz"
+    },
+    "deep-is": {
+      "version": "0.1.3",
+      "from": "deep-is@>=0.1.3 <0.2.0",
+      "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz"
+    },
+    "del": {
+      "version": "2.2.0",
+      "from": "del@>=2.0.2 <3.0.0",
+      "resolved": "https://registry.npmjs.org/del/-/del-2.2.0.tgz"
+    },
+    "doctrine": {
+      "version": "1.2.1",
+      "from": "doctrine@>=1.2.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-1.2.1.tgz",
+      "dependencies": {
+        "esutils": {
+          "version": "1.1.6",
+          "from": "esutils@>=1.1.6 <2.0.0",
+          "resolved": "https://registry.npmjs.org/esutils/-/esutils-1.1.6.tgz"
+        }
+      }
+    },
+    "dom-serializer": {
+      "version": "0.1.0",
+      "from": "dom-serializer@>=0.0.0 <1.0.0",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.0.tgz",
+      "dependencies": {
+        "domelementtype": {
+          "version": "1.1.3",
+          "from": "domelementtype@>=1.1.1 <1.2.0",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz"
+        }
+      }
+    },
+    "domelementtype": {
+      "version": "1.3.0",
+      "from": "domelementtype@>=1.3.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.3.0.tgz"
+    },
+    "domhandler": {
+      "version": "2.3.0",
+      "from": "domhandler@>=2.3.0 <3.0.0",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-2.3.0.tgz"
+    },
+    "domutils": {
+      "version": "1.5.1",
+      "from": "domutils@>=1.5.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-1.5.1.tgz"
+    },
+    "entities": {
+      "version": "1.1.1",
+      "from": "entities@>=1.1.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.1.tgz"
+    },
+    "es5-ext": {
+      "version": "0.10.11",
+      "from": "es5-ext@>=0.10.8 <0.11.0",
+      "resolved": "https://registry.npmjs.org/es5-ext/-/es5-ext-0.10.11.tgz"
+    },
+    "es6-iterator": {
+      "version": "2.0.0",
+      "from": "es6-iterator@>=2.0.0 <3.0.0",
+      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.0.tgz"
+    },
+    "es6-map": {
+      "version": "0.1.3",
+      "from": "es6-map@>=0.1.3 <0.2.0",
+      "resolved": "https://registry.npmjs.org/es6-map/-/es6-map-0.1.3.tgz"
+    },
+    "es6-set": {
+      "version": "0.1.4",
+      "from": "es6-set@>=0.1.3 <0.2.0",
+      "resolved": "https://registry.npmjs.org/es6-set/-/es6-set-0.1.4.tgz"
+    },
+    "es6-symbol": {
+      "version": "3.0.2",
+      "from": "es6-symbol@>=3.0.1 <3.1.0",
+      "resolved": "https://registry.npmjs.org/es6-symbol/-/es6-symbol-3.0.2.tgz"
+    },
+    "es6-weak-map": {
+      "version": "2.0.1",
+      "from": "es6-weak-map@>=2.0.1 <3.0.0",
+      "resolved": "https://registry.npmjs.org/es6-weak-map/-/es6-weak-map-2.0.1.tgz"
+    },
+    "escape-string-regexp": {
+      "version": "1.0.5",
+      "from": "escape-string-regexp@>=1.0.2 <2.0.0",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz"
+    },
+    "escope": {
+      "version": "3.6.0",
+      "from": "escope@>=3.6.0 <4.0.0",
+      "resolved": "https://registry.npmjs.org/escope/-/escope-3.6.0.tgz"
+    },
+    "eslint": {
+      "version": "2.9.0",
+      "from": "eslint@2.9.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-2.9.0.tgz"
+    },
+    "eslint-plugin-html": {
+      "version": "1.4.0",
+      "from": "eslint-plugin-html@1.4.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-html/-/eslint-plugin-html-1.4.0.tgz"
+    },
+    "eslint-plugin-mozilla": {
+      "version": "0.0.3",
+      "from": "eslint-plugin-mozilla",
+      "resolved": "file:eslint-plugin-mozilla",
+      "dependencies": {
+        "espree": {
+          "version": "2.2.5",
+          "from": "espree@>=2.2.4 <3.0.0",
+          "resolved": "https://registry.npmjs.org/espree/-/espree-2.2.5.tgz"
+        }
+      }
+    },
+    "eslint-plugin-react": {
+      "version": "4.2.3",
+      "from": "eslint-plugin-react@4.2.3",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-react/-/eslint-plugin-react-4.2.3.tgz"
+    },
+    "espree": {
+      "version": "3.1.4",
+      "from": "espree@3.1.4",
+      "resolved": "https://registry.npmjs.org/espree/-/espree-3.1.4.tgz"
+    },
+    "esprima": {
+      "version": "2.7.2",
+      "from": "esprima@>=2.6.0 <3.0.0",
+      "resolved": "https://registry.npmjs.org/esprima/-/esprima-2.7.2.tgz"
+    },
+    "esrecurse": {
+      "version": "4.1.0",
+      "from": "esrecurse@>=4.1.0 <5.0.0",
+      "resolved": "https://registry.npmjs.org/esrecurse/-/esrecurse-4.1.0.tgz",
+      "dependencies": {
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+      "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-3.1.0.tgz"
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+}

new file mode 100755
--- /dev/null
+++ b/testing/eslint/update
@@ -0,0 +1,65 @@
+#!/bin/sh
+# Force the scripts working directory to be projdir/testing/eslint.
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd $DIR
+
+echo "To complete this script you will need the following tokens from https://api.pub.build.mozilla.org/tokenauth/"
+echo " - tooltool.upload.public"
+echo " - tooltool.download.public"
+echo ""
+read -p "Are these tokens visible at the above URL (y/n)?" choice
+case "$choice" in
+  y|Y )
+    echo ""
+    echo "1. Go to https://api.pub.build.mozilla.org/"
+    echo "2. Log In using your Mozilla LDAP account."
+    echo "3. Click on \"Tokens.\""
+    echo "4. Issue a user token with the permissions tooltool.upload.public and tooltool.download.public."
+    echo ""
+    echo "When you click issue you will be presented with a long string. Paste the string into a temporary file called ~/.tooltool-token."
+    echo ""
+    read -rsp $'Press any key to continue...\n' -n 1
+    ;;
+  n|N )
+    echo ""
+    echo "You will need to contact somebody that has these permissions... people most likely to have these permissions are members of the releng, ateam, a sheriff or mratcliffe@mozilla.com."
+    exit 1
+    ;;
+  * )
+    echo ""
+  echo "Invalid input."
+  continue
+    ;;
+esac
+
+echo ""
+echo "Removing node_modules and npm_shrinkwrap.json..."
+rm -rf node_modules/
+rm npm-shrinkwrap.json
+
+echo "Installing eslint and dependencies..."
+../../mach eslint --setup
+
+echo "Creating npm shrinkwrap..."
+npm shrinkwrap
+
+echo "Creating eslint.tar.gz..."
+tar cvfz eslint.tar.gz node_modules
+
+echo "Downloading tooltool..."
+wget https://raw.githubusercontent.com/mozilla/build-tooltool/master/tooltool.py
+chmod +x tooltool.py
+
+echo "Adding eslint.tar.gz to tooltool..."
+rm manifest.tt
+./tooltool.py add --visibility public eslint.tar.gz
+
+echo "Uploading eslint.tar.gz to tooltool..."
+./tooltool.py upload --authentication-file=~/.tooltool-token --message "node_modules folder update for testing/eslint"
+
+echo "Cleaning up..."
+rm eslint.tar.gz
+rm tooltool.py
+
+echo ""
+echo "Update complete, please commit and check in your changes."

--- a/testing/taskcluster/tasks/branches/base_jobs.yml
+++ b/testing/taskcluster/tasks/branches/base_jobs.yml
@@ -388,17 +388,17 @@ tasks:
         - '**/*.jsm'
         - '**/*.jsx'
         - '**/*.html'
         - '**/*.xml'
         # Run when eslint policies change.
         - '**/.eslintignore'
         - '**/*eslintrc*'
         # The plugin implementing custom checks.
-        - 'testing/eslint-plugin-mozilla/**'
+        - 'testing/eslint/eslint-plugin-mozilla/**'
         # Other misc lint related files.
         - 'tools/lint/**'
   android-api-15-gradle-dependencies:
     task: tasks/builds/android_api_15_gradle_dependencies.yml
     root: true
     when:
       file_patterns:
         - 'mobile/android/config/**'

--- a/testing/taskcluster/tasks/tests/eslint-gecko.yml
+++ b/testing/taskcluster/tasks/tests/eslint-gecko.yml
@@ -17,19 +17,23 @@ task:
       path: 'public/image.tar'
       taskId: '{{#task_id_for_image}}lint{{/task_id_for_image}}'
 
     command:
       - bash
       - -cx
       - >
           tc-vcs checkout ./gecko {{base_repository}} {{head_repository}} {{head_rev}} {{head_ref}} &&
-          cd gecko &&
-          npm link testing/eslint-plugin-mozilla &&
-          eslint --plugin html --ext [.js,.jsm,.jsx,.xml,.html] -f tools/lint/eslint-formatter .
+          cd gecko/testing/eslint &&
+          /build/tooltool.py fetch -m manifest.tt &&
+          tar xvfz eslint.tar.gz &&
+          rm eslint.tar.gz &&
+          cd ../.. &&
+          testing/eslint/node_modules/.bin/eslint --plugin html --ext [.js,.jsm,.jsx,.xml,.html] -f tools/lint/eslint-formatter .
+
   extra:
     locations:
         build: null
         tests: null
     treeherder:
         machine:
             platform: lint
         groupSymbol: tc