easy_install of South on fresh system – fails requiring setuptools_hg

[AWilcox@…]

OS: CentOS Linux 6.2 (Like RHEL)
Arch: x86_64
Python: 2.6.6

Steps to reproduce:

1. run [sudo] easy_install South

Expected behaviour:
South is installed

Actual behaviour:
Traceback because setuptools_hg is not installed.

Workaround:
easy_install setuptools_hg manually.

Searching for South>=0.7.1
Reading http://pypi.python.org/simple/South/
Reading http://south.aeracode.org/
Reading http://south.aeracode.org/wiki/Download
Best match: South 0.7.5
Downloading http://pypi.python.org/packages/source/S/South/South-0.7.5.tar.gz#md5=761d4002571dd239f4afe400a52c1b52
Processing South-0.7.5.tar.gz
Running South-0.7.5/setup.py -q bdist_egg --dist-dir /tmp/easy_install-oCBfpO/South-0.7.5/egg-dist-tmp-0iqCSg
Traceback (most recent call last):
  File "/usr/bin/easy_install", line 9, in <module>
    load_entry_point('distribute==0.6.10', 'console_scripts', 'easy_install')()
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 1715, in main
    with_ei_usage(lambda:
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 1696, in with_ei_usage
    return f()
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 1719, in <lambda>
    distclass=DistributionWithoutHelpCommands, **kw
  File "/usr/lib64/python2.6/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/usr/lib64/python2.6/distutils/dist.py", line 975, in run_commands
    self.run_command(cmd)
  File "/usr/lib64/python2.6/distutils/dist.py", line 995, in run_command
    cmd_obj.run()
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 236, in run
    self.easy_install(spec, not self.no_deps)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 472, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 504, in install_item
    self.process_distribution(spec, dist, deps)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 545, in process_distribution
    [requirement], self.local_index, self.easy_install
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 538, in resolve
    dist = best[req.key] = env.best_match(req, self, installer)
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 780, in best_match
    return self.obtain(req, installer) # try and download/install
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 792, in obtain
    return installer(requirement)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 472, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 502, in install_item
    dists = self.install_eggs(spec, download, tmpdir)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 681, in install_eggs
    return self.build_and_install(setup_script, setup_base)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 958, in build_and_install
    self.run_setup(setup_script, setup_base, args)
  File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 947, in run_setup
    run_setup(setup_script, args)
  File "/usr/lib/python2.6/site-packages/setuptools/sandbox.py", line 29, in run_setup
    lambda: execfile(
  File "/usr/lib/python2.6/site-packages/setuptools/sandbox.py", line 70, in run
    return func()
  File "/usr/lib/python2.6/site-packages/setuptools/sandbox.py", line 31, in <lambda>
    {'__file__':setup_script, '__name__':'__main__'}
  File "setup.py", line 60, in <module>
  File "/usr/lib64/python2.6/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/usr/lib64/python2.6/distutils/dist.py", line 975, in run_commands
    self.run_command(cmd)
  File "/usr/lib64/python2.6/distutils/dist.py", line 995, in run_command
    cmd_obj.run()
  File "/usr/lib/python2.6/site-packages/setuptools/command/bdist_egg.py", line 167, in run
    self.run_command("egg_info")
  File "/usr/lib64/python2.6/distutils/cmd.py", line 333, in run_command
    self.distribution.run_command(command)
  File "/usr/lib64/python2.6/distutils/dist.py", line 995, in run_command
    cmd_obj.run()
  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 179, in run
    self.find_sources()
  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 254, in find_sources
    mm.run()
  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 308, in run
    self.add_defaults()
  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 335, in add_defaults
    rcfiles = list(walk_revctrl())
  File "/usr/lib/python2.6/site-packages/setuptools/command/sdist.py", line 46, in walk_revctrl
    for item in ep.load()(dirname):
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 1948, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
ImportError: No module named setuptools_hg

[andrew]

I can't replicate this - none of my machines have setuptools_hg installed and South installs and works fine here, and we never depend on setuptools_hg in the codebase. Perhaps it's a peculiarity of your distribution?