Added a ez_setup to replace distribute_setup. ez_setup become defacto. Closes #1264

5 files changed, 380 insertions, 550 deletions

diff --git a/MANIFEST.in b/MANIFEST.in
index cf308103..919b05a0 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -7,7 +7,7 @@ include TODO
 
 include babel.cfg
 include Makefile
-include distribute_setup.py
+include ez_setup.py
 include sphinx-autogen.py
 include sphinx-build.py
 include sphinx-quickstart.py
diff --git a/distribute_setup.py b/distribute_setup.py
deleted file mode 100644
index cebd80b1..00000000
--- a/distribute_setup.py
+++ /dev/null
@@ -1,541 +0,0 @@
-#!python
-"""Bootstrap distribute installation
-
-If you want to use setuptools in your package's setup.py, just include this
-file in the same directory with it, and add this to the top of your setup.py::
-
-    from distribute_setup import use_setuptools
-    use_setuptools()
-
-If you want to require a specific version of setuptools, set a download
-mirror, or use an alternate download directory, you can do so by supplying
-the appropriate options to ``use_setuptools()``.
-
-This file can also be run as a script to install or upgrade setuptools.
-"""
-import os
-import shutil
-import sys
-import time
-import fnmatch
-import tempfile
-import tarfile
-import optparse
-
-from distutils import log
-
-try:
-    from site import USER_SITE
-except ImportError:
-    USER_SITE = None
-
-try:
-    import subprocess
-
-    def _python_cmd(*args):
-        args = (sys.executable,) + args
-        return subprocess.call(args) == 0
-
-except ImportError:
-    # will be used for python 2.3
-    def _python_cmd(*args):
-        args = (sys.executable,) + args
-        # quoting arguments if windows
-        if sys.platform == 'win32':
-            def quote(arg):
-                if ' ' in arg:
-                    return '"%s"' % arg
-                return arg
-            args = [quote(arg) for arg in args]
-        return os.spawnl(os.P_WAIT, sys.executable, *args) == 0
-
-DEFAULT_VERSION = "0.6.30"
-DEFAULT_URL = "http://pypi.python.org/packages/source/d/distribute/"
-SETUPTOOLS_FAKED_VERSION = "0.6c11"
-
-SETUPTOOLS_PKG_INFO = """\
-Metadata-Version: 1.0
-Name: setuptools
-Version: %s
-Summary: xxxx
-Home-page: xxx
-Author: xxx
-Author-email: xxx
-License: xxx
-Description: xxx
-""" % SETUPTOOLS_FAKED_VERSION
-
-
-def _install(tarball, install_args=()):
-    # extracting the tarball
-    tmpdir = tempfile.mkdtemp()
-    log.warn('Extracting in %s', tmpdir)
-    old_wd = os.getcwd()
-    try:
-        os.chdir(tmpdir)
-        tar = tarfile.open(tarball)
-        _extractall(tar)
-        tar.close()
-
-        # going in the directory
-        subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
-        os.chdir(subdir)
-        log.warn('Now working in %s', subdir)
-
-        # installing
-        log.warn('Installing Distribute')
-        if not _python_cmd('setup.py', 'install', *install_args):
-            log.warn('Something went wrong during the installation.')
-            log.warn('See the error message above.')
-            # exitcode will be 2
-            return 2
-    finally:
-        os.chdir(old_wd)
-        shutil.rmtree(tmpdir)
-
-
-def _build_egg(egg, tarball, to_dir):
-    # extracting the tarball
-    tmpdir = tempfile.mkdtemp()
-    log.warn('Extracting in %s', tmpdir)
-    old_wd = os.getcwd()
-    try:
-        os.chdir(tmpdir)
-        tar = tarfile.open(tarball)
-        _extractall(tar)
-        tar.close()
-
-        # going in the directory
-        subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
-        os.chdir(subdir)
-        log.warn('Now working in %s', subdir)
-
-        # building an egg
-        log.warn('Building a Distribute egg in %s', to_dir)
-        _python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
-
-    finally:
-        os.chdir(old_wd)
-        shutil.rmtree(tmpdir)
-    # returning the result
-    log.warn(egg)
-    if not os.path.exists(egg):
-        raise IOError('Could not build the egg.')
-
-
-def _do_download(version, download_base, to_dir, download_delay):
-    egg = os.path.join(to_dir, 'distribute-%s-py%d.%d.egg'
-                       % (version, sys.version_info[0], sys.version_info[1]))
-    if not os.path.exists(egg):
-        tarball = download_setuptools(version, download_base,
-                                      to_dir, download_delay)
-        _build_egg(egg, tarball, to_dir)
-    sys.path.insert(0, egg)
-    import setuptools
-    setuptools.bootstrap_install_from = egg
-
-
-def use_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
-                   to_dir=os.curdir, download_delay=15, no_fake=True):
-    # making sure we use the absolute path
-    to_dir = os.path.abspath(to_dir)
-    was_imported = 'pkg_resources' in sys.modules or \
-        'setuptools' in sys.modules
-    try:
-        try:
-            import pkg_resources
-            if not hasattr(pkg_resources, '_distribute'):
-                if not no_fake:
-                    _fake_setuptools()
-                raise ImportError
-        except ImportError:
-            return _do_download(version, download_base, to_dir, download_delay)
-        try:
-            pkg_resources.require("distribute>=" + version)
-            return
-        except pkg_resources.VersionConflict:
-            e = sys.exc_info()[1]
-            if was_imported:
-                sys.stderr.write(
-                "The required version of distribute (>=%s) is not available,\n"
-                "and can't be installed while this script is running. Please\n"
-                "install a more recent version first, using\n"
-                "'easy_install -U distribute'."
-                "\n\n(Currently using %r)\n" % (version, e.args[0]))
-                sys.exit(2)
-            else:
-                del pkg_resources, sys.modules['pkg_resources']    # reload ok
-                return _do_download(version, download_base, to_dir,
-                                    download_delay)
-        except pkg_resources.DistributionNotFound:
-            return _do_download(version, download_base, to_dir,
-                                download_delay)
-    finally:
-        if not no_fake:
-            _create_fake_setuptools_pkg_info(to_dir)
-
-
-def download_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
-                        to_dir=os.curdir, delay=15):
-    """Download distribute from a specified location and return its filename
-
-    `version` should be a valid distribute version number that is available
-    as an egg for download under the `download_base` URL (which should end
-    with a '/'). `to_dir` is the directory where the egg will be downloaded.
-    `delay` is the number of seconds to pause before an actual download
-    attempt.
-    """
-    # making sure we use the absolute path
-    to_dir = os.path.abspath(to_dir)
-    try:
-        from urllib.request import urlopen
-    except ImportError:
-        from urllib2 import urlopen
-    tgz_name = "distribute-%s.tar.gz" % version
-    url = download_base + tgz_name
-    saveto = os.path.join(to_dir, tgz_name)
-    src = dst = None
-    if not os.path.exists(saveto):  # Avoid repeated downloads
-        try:
-            log.warn("Downloading %s", url)
-            src = urlopen(url)
-            # Read/write all in one block, so we don't create a corrupt file
-            # if the download is interrupted.
-            data = src.read()
-            dst = open(saveto, "wb")
-            dst.write(data)
-        finally:
-            if src:
-                src.close()
-            if dst:
-                dst.close()
-    return os.path.realpath(saveto)
-
-
-def _no_sandbox(function):
-    def __no_sandbox(*args, **kw):
-        try:
-            from setuptools.sandbox import DirectorySandbox
-            if not hasattr(DirectorySandbox, '_old'):
-                def violation(*args):
-                    pass
-                DirectorySandbox._old = DirectorySandbox._violation
-                DirectorySandbox._violation = violation
-                patched = True
-            else:
-                patched = False
-        except ImportError:
-            patched = False
-
-        try:
-            return function(*args, **kw)
-        finally:
-            if patched:
-                DirectorySandbox._violation = DirectorySandbox._old
-                del DirectorySandbox._old
-
-    return __no_sandbox
-
-
-def _patch_file(path, content):
-    """Will backup the file then patch it"""
-    existing_content = open(path).read()
-    if existing_content == content:
-        # already patched
-        log.warn('Already patched.')
-        return False
-    log.warn('Patching...')
-    _rename_path(path)
-    f = open(path, 'w')
-    try:
-        f.write(content)
-    finally:
-        f.close()
-    return True
-
-_patch_file = _no_sandbox(_patch_file)
-
-
-def _same_content(path, content):
-    return open(path).read() == content
-
-
-def _rename_path(path):
-    new_name = path + '.OLD.%s' % time.time()
-    log.warn('Renaming %s to %s', path, new_name)
-    os.rename(path, new_name)
-    return new_name
-
-
-def _remove_flat_installation(placeholder):
-    if not os.path.isdir(placeholder):
-        log.warn('Unkown installation at %s', placeholder)
-        return False
-    found = False
-    for file in os.listdir(placeholder):
-        if fnmatch.fnmatch(file, 'setuptools*.egg-info'):
-            found = True
-            break
-    if not found:
-        log.warn('Could not locate setuptools*.egg-info')
-        return
-
-    log.warn('Moving elements out of the way...')
-    pkg_info = os.path.join(placeholder, file)
-    if os.path.isdir(pkg_info):
-        patched = _patch_egg_dir(pkg_info)
-    else:
-        patched = _patch_file(pkg_info, SETUPTOOLS_PKG_INFO)
-
-    if not patched:
-        log.warn('%s already patched.', pkg_info)
-        return False
-    # now let's move the files out of the way
-    for element in ('setuptools', 'pkg_resources.py', 'site.py'):
-        element = os.path.join(placeholder, element)
-        if os.path.exists(element):
-            _rename_path(element)
-        else:
-            log.warn('Could not find the %s element of the '
-                     'Setuptools distribution', element)
-    return True
-
-_remove_flat_installation = _no_sandbox(_remove_flat_installation)
-
-
-def _after_install(dist):
-    log.warn('After install bootstrap.')
-    placeholder = dist.get_command_obj('install').install_purelib
-    _create_fake_setuptools_pkg_info(placeholder)
-
-
-def _create_fake_setuptools_pkg_info(placeholder):
-    if not placeholder or not os.path.exists(placeholder):
-        log.warn('Could not find the install location')
-        return
-    pyver = '%s.%s' % (sys.version_info[0], sys.version_info[1])
-    setuptools_file = 'setuptools-%s-py%s.egg-info' % \
-            (SETUPTOOLS_FAKED_VERSION, pyver)
-    pkg_info = os.path.join(placeholder, setuptools_file)
-    if os.path.exists(pkg_info):
-        log.warn('%s already exists', pkg_info)
-        return
-
-    log.warn('Creating %s', pkg_info)
-    try:
-        f = open(pkg_info, 'w')
-    except EnvironmentError:
-        log.warn("Don't have permissions to write %s, skipping", pkg_info)
-        return
-    try:
-        f.write(SETUPTOOLS_PKG_INFO)
-    finally:
-        f.close()
-
-    pth_file = os.path.join(placeholder, 'setuptools.pth')
-    log.warn('Creating %s', pth_file)
-    f = open(pth_file, 'w')
-    try:
-        f.write(os.path.join(os.curdir, setuptools_file))
-    finally:
-        f.close()
-
-_create_fake_setuptools_pkg_info = _no_sandbox(
-    _create_fake_setuptools_pkg_info
-)
-
-
-def _patch_egg_dir(path):
-    # let's check if it's already patched
-    pkg_info = os.path.join(path, 'EGG-INFO', 'PKG-INFO')
-    if os.path.exists(pkg_info):
-        if _same_content(pkg_info, SETUPTOOLS_PKG_INFO):
-            log.warn('%s already patched.', pkg_info)
-            return False
-    _rename_path(path)
-    os.mkdir(path)
-    os.mkdir(os.path.join(path, 'EGG-INFO'))
-    pkg_info = os.path.join(path, 'EGG-INFO', 'PKG-INFO')
-    f = open(pkg_info, 'w')
-    try:
-        f.write(SETUPTOOLS_PKG_INFO)
-    finally:
-        f.close()
-    return True
-
-_patch_egg_dir = _no_sandbox(_patch_egg_dir)
-
-
-def _before_install():
-    log.warn('Before install bootstrap.')
-    _fake_setuptools()
-
-
-def _under_prefix(location):
-    if 'install' not in sys.argv:
-        return True
-    args = sys.argv[sys.argv.index('install') + 1:]
-    for index, arg in enumerate(args):
-        for option in ('--root', '--prefix'):
-            if arg.startswith('%s=' % option):
-                top_dir = arg.split('root=')[-1]
-                return location.startswith(top_dir)
-            elif arg == option:
-                if len(args) > index:
-                    top_dir = args[index + 1]
-                    return location.startswith(top_dir)
-        if arg == '--user' and USER_SITE is not None:
-            return location.startswith(USER_SITE)
-    return True
-
-
-def _fake_setuptools():
-    log.warn('Scanning installed packages')
-    try:
-        import pkg_resources
-    except ImportError:
-        # we're cool
-        log.warn('Setuptools or Distribute does not seem to be installed.')
-        return
-    ws = pkg_resources.working_set
-    try:
-        setuptools_dist = ws.find(
-            pkg_resources.Requirement.parse('setuptools', replacement=False)
-            )
-    except TypeError:
-        # old distribute API
-        setuptools_dist = ws.find(
-            pkg_resources.Requirement.parse('setuptools')
-        )
-
-    if setuptools_dist is None:
-        log.warn('No setuptools distribution found')
-        return
-    # detecting if it was already faked
-    setuptools_location = setuptools_dist.location
-    log.warn('Setuptools installation detected at %s', setuptools_location)
-
-    # if --root or --preix was provided, and if
-    # setuptools is not located in them, we don't patch it
-    if not _under_prefix(setuptools_location):
-        log.warn('Not patching, --root or --prefix is installing Distribute'
-                 ' in another location')
-        return
-
-    # let's see if its an egg
-    if not setuptools_location.endswith('.egg'):
-        log.warn('Non-egg installation')
-        res = _remove_flat_installation(setuptools_location)
-        if not res:
-            return
-    else:
-        log.warn('Egg installation')
-        pkg_info = os.path.join(setuptools_location, 'EGG-INFO', 'PKG-INFO')
-        if (os.path.exists(pkg_info) and
-            _same_content(pkg_info, SETUPTOOLS_PKG_INFO)):
-            log.warn('Already patched.')
-            return
-        log.warn('Patching...')
-        # let's create a fake egg replacing setuptools one
-        res = _patch_egg_dir(setuptools_location)
-        if not res:
-            return
-    log.warn('Patching complete.')
-    _relaunch()
-
-
-def _relaunch():
-    log.warn('Relaunching...')
-    # we have to relaunch the process
-    # pip marker to avoid a relaunch bug
-    _cmd1 = ['-c', 'install', '--single-version-externally-managed']
-    _cmd2 = ['-c', 'install', '--record']
-    if sys.argv[:3] == _cmd1 or sys.argv[:3] == _cmd2:
-        sys.argv[0] = 'setup.py'
-    args = [sys.executable] + sys.argv
-    sys.exit(subprocess.call(args))
-
-
-def _extractall(self, path=".", members=None):
-    """Extract all members from the archive to the current working
-       directory and set owner, modification time and permissions on
-       directories afterwards. `path' specifies a different directory
-       to extract to. `members' is optional and must be a subset of the
-       list returned by getmembers().
-    """
-    import copy
-    import operator
-    from tarfile import ExtractError
-    directories = []
-
-    if members is None:
-        members = self
-
-    for tarinfo in members:
-        if tarinfo.isdir():
-            # Extract directories with a safe mode.
-            directories.append(tarinfo)
-            tarinfo = copy.copy(tarinfo)
-            tarinfo.mode = 448  # decimal for oct 0700
-        self.extract(tarinfo, path)
-
-    # Reverse sort directories.
-    if sys.version_info < (2, 4):
-        def sorter(dir1, dir2):
-            return cmp(dir1.name, dir2.name)
-        directories.sort(sorter)
-        directories.reverse()
-    else:
-        directories.sort(key=operator.attrgetter('name'), reverse=True)
-
-    # Set correct owner, mtime and filemode on directories.
-    for tarinfo in directories:
-        dirpath = os.path.join(path, tarinfo.name)
-        try:
-            self.chown(tarinfo, dirpath)
-            self.utime(tarinfo, dirpath)
-            self.chmod(tarinfo, dirpath)
-        except ExtractError:
-            e = sys.exc_info()[1]
-            if self.errorlevel > 1:
-                raise
-            else:
-                self._dbg(1, "tarfile: %s" % e)
-
-
-def _build_install_args(options):
-    """
-    Build the arguments to 'python setup.py install' on the distribute package
-    """
-    install_args = []
-    if options.user_install:
-        if sys.version_info < (2, 6):
-            log.warn("--user requires Python 2.6 or later")
-            raise SystemExit(1)
-        install_args.append('--user')
-    return install_args
-
-def _parse_args():
-    """
-    Parse the command line for options
-    """
-    parser = optparse.OptionParser()
-    parser.add_option(
-        '--user', dest='user_install', action='store_true', default=False,
-        help='install in user site package (requires Python 2.6 or later)')
-    parser.add_option(
-        '--download-base', dest='download_base', metavar="URL",
-        default=DEFAULT_URL,
-        help='alternative URL from where to download the distribute package')
-    options, args = parser.parse_args()
-    # positional arguments are ignored
-    return options
-
-def main(version=DEFAULT_VERSION):
-    """Install or upgrade setuptools and EasyInstall"""
-    options = _parse_args()
-    tarball = download_setuptools(download_base=options.download_base)
-    return _install(tarball, _build_install_args(options))
-
-if __name__ == '__main__':
-    sys.exit(main())
diff --git a/doc/install.rst b/doc/install.rst
index b1e0e5b6..9c258420 100644
--- a/doc/install.rst
+++ b/doc/install.rst
@@ -118,24 +118,25 @@ Install the easy_install command
 
 Python has a very useful :command:`easy_install` command which can download and
 install 3rd-party libraries with a single command.  This is provided by the
-"distribute" project: http://pypi.python.org/pypi/distribute.
+"setuptools" project: http://pypi.python.org/pypi/setuptools.
 
-To install distribute, download http://distribute.org/distribute_setup.py and
+To install setuptools, download
+https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py and
 save it somewhere.  After download, invoke the command prompt, go to the
-directory with distribute_setup.py and run this command:
+directory with ez_setup.py and run this command:
 
 .. code-block:: bat
 
-   C:\> python distribute_setup.py
+   C:\> python ez_setup.py
 
-Now distribute and its :command:`easy_install` command is installed.  From there
+Now setuptools and its :command:`easy_install` command is installed.  From there
 we can go to the Sphinx install.
 
 
 Installing Sphinx with easy_install
 -----------------------------------
 
-If you finished the installation of distribute, type this line in the command
+If you finished the installation of setuptools, type this line in the command
 prompt:
 
 .. code-block:: bat
diff --git a/ez_setup.py b/ez_setup.py
new file mode 100644
index 00000000..b02f3f17
--- /dev/null
+++ b/ez_setup.py
@@ -0,0 +1,370 @@
+#!python
+"""Bootstrap setuptools installation
+
+If you want to use setuptools in your package's setup.py, just include this
+file in the same directory with it, and add this to the top of your setup.py::
+
+    from ez_setup import use_setuptools
+    use_setuptools()
+
+If you want to require a specific version of setuptools, set a download
+mirror, or use an alternate download directory, you can do so by supplying
+the appropriate options to ``use_setuptools()``.
+
+This file can also be run as a script to install or upgrade setuptools.
+"""
+import os
+import shutil
+import sys
+import tempfile
+import tarfile
+import optparse
+import subprocess
+import platform
+
+from distutils import log
+
+try:
+    from site import USER_SITE
+except ImportError:
+    USER_SITE = None
+
+DEFAULT_VERSION = "1.1.6"
+DEFAULT_URL = "https://pypi.python.org/packages/source/s/setuptools/"
+
+def _python_cmd(*args):
+    args = (sys.executable,) + args
+    return subprocess.call(args) == 0
+
+def _check_call_py24(cmd, *args, **kwargs):
+    res = subprocess.call(cmd, *args, **kwargs)
+    class CalledProcessError(Exception):
+        pass
+    if not res == 0:
+        msg = "Command '%s' return non-zero exit status %d" % (cmd, res)
+        raise CalledProcessError(msg)
+vars(subprocess).setdefault('check_call', _check_call_py24)
+
+def _install(tarball, install_args=()):
+    # extracting the tarball
+    tmpdir = tempfile.mkdtemp()
+    log.warn('Extracting in %s', tmpdir)
+    old_wd = os.getcwd()
+    try:
+        os.chdir(tmpdir)
+        tar = tarfile.open(tarball)
+        _extractall(tar)
+        tar.close()
+
+        # going in the directory
+        subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
+        os.chdir(subdir)
+        log.warn('Now working in %s', subdir)
+
+        # installing
+        log.warn('Installing Setuptools')
+        if not _python_cmd('setup.py', 'install', *install_args):
+            log.warn('Something went wrong during the installation.')
+            log.warn('See the error message above.')
+            # exitcode will be 2
+            return 2
+    finally:
+        os.chdir(old_wd)
+        shutil.rmtree(tmpdir)
+
+
+def _build_egg(egg, tarball, to_dir):
+    # extracting the tarball
+    tmpdir = tempfile.mkdtemp()
+    log.warn('Extracting in %s', tmpdir)
+    old_wd = os.getcwd()
+    try:
+        os.chdir(tmpdir)
+        tar = tarfile.open(tarball)
+        _extractall(tar)
+        tar.close()
+
+        # going in the directory
+        subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
+        os.chdir(subdir)
+        log.warn('Now working in %s', subdir)
+
+        # building an egg
+        log.warn('Building a Setuptools egg in %s', to_dir)
+        _python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
+
+    finally:
+        os.chdir(old_wd)
+        shutil.rmtree(tmpdir)
+    # returning the result
+    log.warn(egg)
+    if not os.path.exists(egg):
+        raise IOError('Could not build the egg.')
+
+
+def _do_download(version, download_base, to_dir, download_delay):
+    egg = os.path.join(to_dir, 'setuptools-%s-py%d.%d.egg'
+                       % (version, sys.version_info[0], sys.version_info[1]))
+    if not os.path.exists(egg):
+        tarball = download_setuptools(version, download_base,
+                                      to_dir, download_delay)
+        _build_egg(egg, tarball, to_dir)
+    sys.path.insert(0, egg)
+
+    # Remove previously-imported pkg_resources if present (see
+    # https://bitbucket.org/pypa/setuptools/pull-request/7/ for details).
+    if 'pkg_resources' in sys.modules:
+        del sys.modules['pkg_resources']
+
+    import setuptools
+    setuptools.bootstrap_install_from = egg
+
+
+def use_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
+                   to_dir=os.curdir, download_delay=15):
+    # making sure we use the absolute path
+    to_dir = os.path.abspath(to_dir)
+    was_imported = 'pkg_resources' in sys.modules or \
+        'setuptools' in sys.modules
+    try:
+        import pkg_resources
+    except ImportError:
+        return _do_download(version, download_base, to_dir, download_delay)
+    try:
+        pkg_resources.require("setuptools>=" + version)
+        return
+    except pkg_resources.VersionConflict:
+        e = sys.exc_info()[1]
+        if was_imported:
+            sys.stderr.write(
+            "The required version of setuptools (>=%s) is not available,\n"
+            "and can't be installed while this script is running. Please\n"
+            "install a more recent version first, using\n"
+            "'easy_install -U setuptools'."
+            "\n\n(Currently using %r)\n" % (version, e.args[0]))
+            sys.exit(2)
+        else:
+            del pkg_resources, sys.modules['pkg_resources']    # reload ok
+            return _do_download(version, download_base, to_dir,
+                                download_delay)
+    except pkg_resources.DistributionNotFound:
+        return _do_download(version, download_base, to_dir,
+                            download_delay)
+
+def download_file_powershell(url, target):
+    """
+    Download the file at url to target using Powershell (which will validate
+    trust). Raise an exception if the command cannot complete.
+    """
+    target = os.path.abspath(target)
+    cmd = [
+        'powershell',
+        '-Command',
+        "(new-object System.Net.WebClient).DownloadFile(%(url)r, %(target)r)" % vars(),
+    ]
+    subprocess.check_call(cmd)
+
+def has_powershell():
+    if platform.system() != 'Windows':
+        return False
+    cmd = ['powershell', '-Command', 'echo test']
+    devnull = open(os.path.devnull, 'wb')
+    try:
+        try:
+            subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
+        except:
+            return False
+    finally:
+        devnull.close()
+    return True
+
+download_file_powershell.viable = has_powershell
+
+def download_file_curl(url, target):
+    cmd = ['curl', url, '--silent', '--output', target]
+    subprocess.check_call(cmd)
+
+def has_curl():
+    cmd = ['curl', '--version']
+    devnull = open(os.path.devnull, 'wb')
+    try:
+        try:
+            subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
+        except:
+            return False
+    finally:
+        devnull.close()
+    return True
+
+download_file_curl.viable = has_curl
+
+def download_file_wget(url, target):
+    cmd = ['wget', url, '--quiet', '--output-document', target]
+    subprocess.check_call(cmd)
+
+def has_wget():
+    cmd = ['wget', '--version']
+    devnull = open(os.path.devnull, 'wb')
+    try:
+        try:
+            subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
+        except:
+            return False
+    finally:
+        devnull.close()
+    return True
+
+download_file_wget.viable = has_wget
+
+def download_file_insecure(url, target):
+    """
+    Use Python to download the file, even though it cannot authenticate the
+    connection.
+    """
+    try:
+        from urllib.request import urlopen
+    except ImportError:
+        from urllib2 import urlopen
+    src = dst = None
+    try:
+        src = urlopen(url)
+        # Read/write all in one block, so we don't create a corrupt file
+        # if the download is interrupted.
+        data = src.read()
+        dst = open(target, "wb")
+        dst.write(data)
+    finally:
+        if src:
+            src.close()
+        if dst:
+            dst.close()
+
+download_file_insecure.viable = lambda: True
+
+def get_best_downloader():
+    downloaders = [
+        download_file_powershell,
+        download_file_curl,
+        download_file_wget,
+        download_file_insecure,
+    ]
+
+    for dl in downloaders:
+        if dl.viable():
+            return dl
+
+def download_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
+                        to_dir=os.curdir, delay=15,
+                        downloader_factory=get_best_downloader):
+    """Download setuptools from a specified location and return its filename
+
+    `version` should be a valid setuptools version number that is available
+    as an egg for download under the `download_base` URL (which should end
+    with a '/'). `to_dir` is the directory where the egg will be downloaded.
+    `delay` is the number of seconds to pause before an actual download
+    attempt.
+
+    ``downloader_factory`` should be a function taking no arguments and
+    returning a function for downloading a URL to a target.
+    """
+    # making sure we use the absolute path
+    to_dir = os.path.abspath(to_dir)
+    tgz_name = "setuptools-%s.tar.gz" % version
+    url = download_base + tgz_name
+    saveto = os.path.join(to_dir, tgz_name)
+    if not os.path.exists(saveto):  # Avoid repeated downloads
+        log.warn("Downloading %s", url)
+        downloader = downloader_factory()
+        downloader(url, saveto)
+    return os.path.realpath(saveto)
+
+
+def _extractall(self, path=".", members=None):
+    """Extract all members from the archive to the current working
+       directory and set owner, modification time and permissions on
+       directories afterwards. `path' specifies a different directory
+       to extract to. `members' is optional and must be a subset of the
+       list returned by getmembers().
+    """
+    import copy
+    import operator
+    from tarfile import ExtractError
+    directories = []
+
+    if members is None:
+        members = self
+
+    for tarinfo in members:
+        if tarinfo.isdir():
+            # Extract directories with a safe mode.
+            directories.append(tarinfo)
+            tarinfo = copy.copy(tarinfo)
+            tarinfo.mode = 448  # decimal for oct 0700
+        self.extract(tarinfo, path)
+
+    # Reverse sort directories.
+    if sys.version_info < (2, 4):
+        def sorter(dir1, dir2):
+            return cmp(dir1.name, dir2.name)
+        directories.sort(sorter)
+        directories.reverse()
+    else:
+        directories.sort(key=operator.attrgetter('name'), reverse=True)
+
+    # Set correct owner, mtime and filemode on directories.
+    for tarinfo in directories:
+        dirpath = os.path.join(path, tarinfo.name)
+        try:
+            self.chown(tarinfo, dirpath)
+            self.utime(tarinfo, dirpath)
+            self.chmod(tarinfo, dirpath)
+        except ExtractError:
+            e = sys.exc_info()[1]
+            if self.errorlevel > 1:
+                raise
+            else:
+                self._dbg(1, "tarfile: %s" % e)
+
+
+def _build_install_args(options):
+    """
+    Build the arguments to 'python setup.py install' on the setuptools package
+    """
+    install_args = []
+    if options.user_install:
+        if sys.version_info < (2, 6):
+            log.warn("--user requires Python 2.6 or later")
+            raise SystemExit(1)
+        install_args.append('--user')
+    return install_args
+
+def _parse_args():
+    """
+    Parse the command line for options
+    """
+    parser = optparse.OptionParser()
+    parser.add_option(
+        '--user', dest='user_install', action='store_true', default=False,
+        help='install in user site package (requires Python 2.6 or later)')
+    parser.add_option(
+        '--download-base', dest='download_base', metavar="URL",
+        default=DEFAULT_URL,
+        help='alternative URL from where to download the setuptools package')
+    parser.add_option(
+        '--insecure', dest='downloader_factory', action='store_const',
+        const=lambda: download_file_insecure, default=get_best_downloader,
+        help='Use internal, non-validating downloader'
+    )
+    options, args = parser.parse_args()
+    # positional arguments are ignored
+    return options
+
+def main(version=DEFAULT_VERSION):
+    """Install or upgrade setuptools and EasyInstall"""
+    options = _parse_args()
+    tarball = download_setuptools(download_base=options.download_base,
+        downloader_factory=options.downloader_factory)
+    return _install(tarball, _build_install_args(options))
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/setup.py b/setup.py
index e066ec78..553cf12d 100644
--- a/setup.py
+++ b/setup.py
@@ -2,8 +2,8 @@
 try:
     from setuptools import setup, find_packages
 except ImportError:
-    import distribute_setup
-    distribute_setup.use_setuptools()
+    import ez_setup
+    ez_setup.use_setuptools()
     from setuptools import setup, find_packages
 
 import os