Mercurial > public > mercurial-scm > hg

annotate mercurial/policy.py @ 29266:b3a677c82a35

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
debuginstall: expose modulepolicy With this, you can check for pure easily: $ HGMODULEPOLICY=py ./hg debuginstall -T "{hgmodulepolicy}" py
author timeless <timeless@mozdev.org>
date Wed, 09 Mar 2016 19:55:45 +0000
parents
children b4d117cee636
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
1 # policy.py - module policy logic for Mercurial.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
2 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
3 # Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com>
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
4 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
5 # This software may be used and distributed according to the terms of the
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
6 # GNU General Public License version 2 or any later version.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
7
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
8 from __future__ import absolute_import
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
9
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
10 import os
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
11 import sys
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
12
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
13 # Rules for how modules can be loaded. Values are:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
14 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
15 # c - require C extensions
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
16 # allow - allow pure Python implementation when C loading fails
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
17 # py - only load pure Python modules
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
18 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
19 # By default, require the C extensions for performance reasons.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
20 policy = 'c'
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
21 try:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
22 from . import __modulepolicy__
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
23 policy = __modulepolicy__.modulepolicy
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
24 except ImportError:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
25 pass
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
26
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
27 # PyPy doesn't load C extensions.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
28 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
29 # The canonical way to do this is to test platform.python_implementation().
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
30 # But we don't import platform and don't bloat for it here.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
31 if '__pypy__' in sys.builtin_module_names:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
32 policy = 'py'
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
33
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
34 # Our C extensions aren't yet compatible with Python 3. So use pure Python
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
35 # on Python 3 for now.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
36 if sys.version_info[0] >= 3:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
37 policy = 'py'
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
38
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
39 # Environment variable can always force settings.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
40 policy = os.environ.get('HGMODULEPOLICY', policy)