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)
dataset/ETHPy150Open balanced/status.balancedpayments.com/venv/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg/pip/vcs/mercurial.py/Mercurial.get_src_requirement/original