[PATCH] import-checker: allow 'from typing import ...'

[Yuya Nishihara]

# HG changeset patch
# User Yuya Nishihara <yuya at tcha.org>
# Date 1573477826 -32400
#      Mon Nov 11 22:10:26 2019 +0900
# Node ID 80b0f402de043fb9dc5393928e04a2c01b2c3423
# Parent  ecd11c4d3834b7602d9bdc6f27ba1f4fc07911a1
import-checker: allow 'from typing import ...'

Suppresses the following error in test-check-module-imports.t:

  mercurial/encoding.py:24: relative import of stdlib module

diff --git a/contrib/import-checker.py b/contrib/import-checker.py
--- a/contrib/import-checker.py
+++ b/contrib/import-checker.py
@@ -535,6 +535,8 @@ def verify_modern_convention(module, roo
             if fullname != '__future__':
                 if not fullname or (
                     fullname in stdlib_modules
+                    # allow standard 'from typing import ...' style
+                    and fullname != 'typing'
                     and fullname not in localmods
                     and fullname + '.__init__' not in localmods
                 ):