--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/venv/lib/python2.7/site-packages/pip/vcs/mercurial.py	Mon Oct 12 17:43:33 2015 -0400
@@ -0,0 +1,140 @@
+from __future__ import absolute_import
+
+import logging
+import os
+import tempfile
+import re
+
+from pip.utils import display_path, rmtree
+from pip.vcs import vcs, VersionControl
+from pip.download import path_to_url
+from pip._vendor.six.moves import configparser
+
+
+logger = logging.getLogger(__name__)
+
+
+class Mercurial(VersionControl):
+    name = 'hg'
+    dirname = '.hg'
+    repo_name = 'clone'
+    schemes = ('hg', 'hg+http', 'hg+https', 'hg+ssh', 'hg+static-http')
+
+    def export(self, location):
+        """Export the Hg repository at the url to the destination location"""
+        temp_dir = tempfile.mkdtemp('-export', 'pip-')
+        self.unpack(temp_dir)
+        try:
+            self.run_command(
+                ['archive', location],
+                filter_stdout=self._filter, show_stdout=False, cwd=temp_dir)
+        finally:
+            rmtree(temp_dir)
+
+    def switch(self, dest, url, rev_options):
+        repo_config = os.path.join(dest, self.dirname, 'hgrc')
+        config = configparser.SafeConfigParser()
+        try:
+            config.read(repo_config)
+            config.set('paths', 'default', url)
+            with open(repo_config, 'w') as config_file:
+                config.write(config_file)
+        except (OSError, configparser.NoSectionError) as exc:
+            logger.warning(
+                'Could not switch Mercurial repository to %s: %s', url, exc,
+            )
+        else:
+            self.run_command(['update', '-q'] + rev_options, cwd=dest)
+
+    def update(self, dest, rev_options):
+        self.run_command(['pull', '-q'], cwd=dest)
+        self.run_command(['update', '-q'] + rev_options, cwd=dest)
+
+    def obtain(self, dest):
+        url, rev = self.get_url_rev()
+        if rev:
+            rev_options = [rev]
+            rev_display = ' (to revision %s)' % rev
+        else:
+            rev_options = []
+            rev_display = ''
+        if self.check_destination(dest, url, rev_options, rev_display):
+            logger.info(
+                'Cloning hg %s%s to %s',
+                url,
+                rev_display,
+                display_path(dest),
+            )
+            self.run_command(['clone', '--noupdate', '-q', url, dest])
+            self.run_command(['update', '-q'] + rev_options, cwd=dest)
+
+    def get_url(self, location):
+        url = self.run_command(
+            ['showconfig', 'paths.default'],
+            show_stdout=False, cwd=location).strip()
+        if self._is_local_repository(url):
+            url = path_to_url(url)
+        return url.strip()
+
+    def get_tag_revs(self, location):
+        tags = self.run_command(['tags'], show_stdout=False, cwd=location)
+        tag_revs = []
+        for line in tags.splitlines():
+            tags_match = re.search(r'([\w\d\.-]+)\s*([\d]+):.*$', line)
+            if tags_match:
+                tag = tags_match.group(1)
+                rev = tags_match.group(2)
+                if "tip" != tag:
+                    tag_revs.append((rev.strip(), tag.strip()))
+        return dict(tag_revs)
+
+    def get_branch_revs(self, location):
+        branches = self.run_command(
+            ['branches'], show_stdout=False, cwd=location)
+        branch_revs = []
+        for line in branches.splitlines():
+            branches_match = re.search(r'([\w\d\.-]+)\s*([\d]+):.*$', line)
+            if branches_match:
+                branch = branches_match.group(1)
+                rev = branches_match.group(2)
+                if "default" != branch:
+                    branch_revs.append((rev.strip(), branch.strip()))
+        return dict(branch_revs)
+
+    def get_revision(self, location):
+        current_revision = self.run_command(
+            ['parents', '--template={rev}'],
+            show_stdout=False, cwd=location).strip()
+        return current_revision
+
+    def get_revision_hash(self, location):
+        current_rev_hash = self.run_command(
+            ['parents', '--template={node}'],
+            show_stdout=False, cwd=location).strip()
+        return current_rev_hash
+
+    def get_src_requirement(self, dist, location, find_tags):
+        repo = self.get_url(location)
+        if not repo.lower().startswith('hg:'):
+            repo = 'hg+' + repo
+        egg_project_name = dist.egg_name().split('-', 1)[0]
+        if not repo:
+            return None
+        current_rev = self.get_revision(location)
+        current_rev_hash = self.get_revision_hash(location)
+        tag_revs = self.get_tag_revs(location)
+        branch_revs = self.get_branch_revs(location)
+        if current_rev in tag_revs:
+            # It's a tag
+            full_egg_name = '%s-%s' % (egg_project_name, tag_revs[current_rev])
+        elif current_rev in branch_revs:
+            # It's the tip of a branch
+            full_egg_name = '%s-%s' % (
+                egg_project_name,
+                branch_revs[current_rev],
+            )
+        else:
+            full_egg_name = '%s-dev' % egg_project_name
+        return '%s@%s#egg=%s' % (repo, current_rev_hash, full_egg_name)
+
+vcs.register(Mercurial)