Add VCS support

[sdouche]

BPO	3814
Nosy	@pitrou
Files	setuptools-sd-20080908.patch: Patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2008-09-09.11:29:10.564>
created_at = <Date 2008-09-09.10:25:18.475>
labels = ['invalid', 'type-feature', 'library']
title = 'Add VCS support'
updated_at = <Date 2008-09-09.11:29:10.549>
user = 'https://bugs.python.org/sdouche'

bugs.python.org fields:

activity = <Date 2008-09-09.11:29:10.549>
actor = 'pitrou'
assignee = 'none'
closed = True
closed_date = <Date 2008-09-09.11:29:10.564>
closer = 'pitrou'
components = ['Distutils']
creation = <Date 2008-09-09.10:25:18.475>
creator = 'sdouche'
dependencies = []
files = ['11435']
hgrepos = []
issue_num = 3814
keywords = ['patch']
message_count = 2.0
messages = ['72837', '72845']
nosy_count = 2.0
nosy_names = ['pitrou', 'sdouche']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue3814'
versions = ['3rd party']

[sdouche]

This is a basic try (4h) to extract specific SVN code out of the core
and add entry points for:

• filters (.svn, .hg, ...)
• find files in repos
• get revision's number

Thoughts:

• if repos have 2 VCS entries (.svn and .hg for example), the first
  valid entry point is used.
• walk_revctrl function needs more love. I keep the philosophy of
  iterator but is it the good way ?

Notes:

• vcs_svn.py & vcs_hg.py are only for demo. The natural place are into
  Setuptools plugins.
• filters must return a list.
• revisions must return a int or None (not 0).

Critics welcome.

[pitrou]

This isn't the right place to post setuptools patches, as setuptools is
not part of the standard Python distribution. There is a setuptools bug
tracker at http://bugs.python.org/setuptools/

You can probably also use the distutils-sig mailing-list for announcing
your patch (which is used for setuptools discussions):
http://mail.python.org/mailman/listinfo/distutils-sig/