Backed out 4 changesets (bug 1460402) for lint failure on intl/locales/en-US/hyphenation/hyph_en_US.dic. CLOSED TREE

Backed out changeset c2e8fbd72ca6 (bug 1460402)
Backed out changeset 3676e913dbff (bug 1460402)
Backed out changeset bb12ffd4b96e (bug 1460402)
Backed out changeset 3e50885329c4 (bug 1460402)

tools/lint/python/flake8.py

@@ -6,13 +6,13 @@ import json
 import os
 import platform
 import signal
+import subprocess
 import sys
 from collections import defaultdict
 
 from mozprocess import ProcessHandlerMixin
 
 from mozlint import result
-from mozlint.util import pip
 from mozlint.pathutils import get_ancestors_by_name
 
 
@@ -98,6 +98,32 @@ class Flake8Process(ProcessHandlerMixin):
         signal.signal(signal.SIGINT, orig)
 
 
+def _run_pip(*args):
+    """
+    Helper function that runs pip with subprocess
+    """
+    try:
+        subprocess.check_output([os.path.join(bindir, 'pip')] + list(args),
+                                stderr=subprocess.STDOUT)
+        return True
+    except subprocess.CalledProcessError as e:
+        print(e.output)
+        return False
+
+
+def reinstall_flake8():
+    """
+    Try to install flake8 at the target version, returns True on success
+    otherwise prints the otuput of the pip command and returns False
+    """
+    if _run_pip('install', '-U',
+                '--require-hashes', '-r',
+                FLAKE8_REQUIREMENTS_PATH):
+        return True
+
+    return False
+
+
 def run_process(config, cmd):
     proc = Flake8Process(config, cmd)
     proc.run()
@@ -109,7 +135,7 @@ def run_process(config, cmd):
 
 
 def setup(root):
-    if not pip.reinstall_program(FLAKE8_REQUIREMENTS_PATH):
+    if not reinstall_flake8():
         print(FLAKE8_INSTALL_ERROR)
         return 1