--- a/python/Pipfile
+++ b/python/Pipfile
@@ -35,16 +35,17 @@ name = "pypi"
 "b017005" = {path = "./../third_party/python/blessings"}
 "605c6a6" = {path = "./../third_party/python/browsermob-proxy"}
 "47200d8" = {path = "./../third_party/python/futures", markers="python_version < '3'"}
 "110bcc4" = {path = "./../third_party/python/jsmin"}
 "dcaaf6a" = {path = "./../third_party/python/json-e"}
 "c49d32a" = {path = "./../third_party/python/mock-1.0.0", markers="python_version < '3.3'"}
 "c2c21d9" = {path = "./../third_party/python/py"}
 "f4b00e9" = {path = "./../third_party/python/pytest"}
+"2ff4284" = {path = "./../third_party/python/python-hglib"}
 "b1adf4f" = {path = "./../third_party/python/pyyaml"}
 "09d375d" = {path = "./../third_party/python/redo"}
 "053111f" = {path = "./../third_party/python/requests"}
 "d250320" = {path = "./../third_party/python/six"}
 "16bd0c6" = {path = "./../third_party/python/requests-unixsocket"}
 "8a4f01a" = {path = "./../third_party/python/slugid"}
 "bddbd22" = {path = "./../third_party/python/voluptuous"}
 "f1de77a" = {path = "./../third_party/python/which", markers="python_version < '3.3'"}

--- a/python/Pipfile.lock
+++ b/python/Pipfile.lock
@@ -1,12 +1,12 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "ae3c5a6736890f6bf7e6f10f5bf07c0a7897a2da9c561c7557d1c2e3d6eefc63"
+            "sha256": "e330b54260594492885d37b6cfc41b431a9b1a201fb8a16401bf4827411f3a33"
         },
         "pipfile-spec": 6,
         "requires": {},
         "sources": [
             {
                 "name": "pypi",
                 "url": "https://pypi.org/simple",
                 "verify_ssl": true
@@ -39,16 +39,19 @@
             "path": "./../third_party/python/attrs"
         },
         "1de94f2": {
             "path": "./../testing/mozbase/mozrunner"
         },
         "26d92fb": {
             "path": "./../config/mozunit"
         },
+        "2ff4284": {
+            "path": "./../third_party/python/python-hglib"
+        },
         "38a4a9a": {
             "path": "./mozversioncontrol"
         },
         "47200d8": {
             "markers": "python_version < '3'",
             "path": "./../third_party/python/futures"
         },
         "501835d": {