Installing and Using Setuptools

Table of Contents

Installing and Using Setuptools
CHANGES

Installation Instructions

The recommended way to bootstrap setuptools on any system is to download ez_setup.py and run it using the target Python environment. Different operating systems have different recommended techniques to accomplish this basic routine, so below are some examples to get you started.

Setuptools requires Python 2.6 or later. To install setuptools on Python 2.4 or Python 2.5, use the bootstrap script for Setuptools 1.x.

The link provided to ez_setup.py is a bookmark to bootstrap script for the latest known stable release.

Windows (Powershell 3 or later)

For best results, uninstall previous versions FIRST (see Uninstalling).

Using Windows 8 (which includes PowerShell 3) or earlier versions of Windows with PowerShell 3 installed, it's possible to install with one simple Powershell command. Start up Powershell and paste this command:

> (Invoke-WebRequest https://bootstrap.pypa.io/ez_setup.py).Content | python -

You must start the Powershell with Administrative privileges or you may choose to install a user-local installation:

> (Invoke-WebRequest https://bootstrap.pypa.io/ez_setup.py).Content | python - --user

If you have Python 3.3 or later, you can use the py command to install to different Python versions. For example, to install to Python 3.3 if you have Python 2.7 installed:

> (Invoke-WebRequest https://bootstrap.pypa.io/ez_setup.py).Content | py -3 -

The recommended way to install setuptools on Windows is to download ez_setup.py and run it. The script will download the appropriate distribution file and install it for you.

Once installation is complete, you will find an easy_install program in your Python Scripts subdirectory. For simple invocation and best results, add this directory to your PATH environment variable, if it is not already present. If you did a user-local install, the Scripts subdirectory is $env:APPDATA\Python\Scripts.

Windows (simplified)

For Windows without PowerShell 3 or for installation without a command-line, download ez_setup.py using your preferred web browser or other technique and "run" that file.

Unix (wget)

Most Linux distributions come with wget.

Download ez_setup.py and run it using the target Python version. The script will download the appropriate version and install it for you:

> wget https://bootstrap.pypa.io/ez_setup.py -O - | python

Note that you will may need to invoke the command with superuser privileges to install to the system Python:

> wget https://bootstrap.pypa.io/ez_setup.py -O - | sudo python

Alternatively, Setuptools may be installed to a user-local path:

> wget https://bootstrap.pypa.io/ez_setup.py -O - | python - --user

Unix including Mac OS X (curl)

If your system has curl installed, follow the wget instructions but replace wget with curl and -O with -o. For example:

> curl https://bootstrap.pypa.io/ez_setup.py -o - | python

Advanced Installation

For more advanced installation options, such as installing to custom locations or prefixes, download and extract the source tarball from Setuptools on PyPI and run setup.py with any supported distutils and Setuptools options. For example:

setuptools-x.x$ python setup.py install --prefix=/opt/setuptools

Use --help to get a full options list, but we recommend consulting the EasyInstall manual for detailed instructions, especially the section on custom installation locations.

Downloads

All setuptools downloads can be found at the project's home page in the Python Package Index. Scroll to the very bottom of the page to find the links.

In addition to the PyPI downloads, the development version of setuptools is available from the Bitbucket repo, and in-development versions of the 0.6 branch are available as well.

Uninstalling

On Windows, if Setuptools was installed using an .exe or .msi installer, simply use the uninstall feature of "Add/Remove Programs" in the Control Panel.

Otherwise, to uninstall Setuptools or Distribute, regardless of the Python version, delete all setuptools* and distribute* files and directories from your system's site-packages directory (and any other sys.path directories) FIRST.

If you are upgrading or otherwise plan to re-install Setuptools or Distribute, nothing further needs to be done. If you want to completely remove Setuptools, you may also want to remove the 'easy_install' and 'easy_install-x.x' scripts and associated executables installed to the Python scripts directory.

Using Setuptools and EasyInstall

Here are some of the available manuals, tutorials, and other resources for learning about Setuptools, Python Eggs, and EasyInstall:

Questions, comments, and bug reports should be directed to the distutils-sig mailing list. If you have written (or know of) any tutorials, documentation, plug-ins, or other resources for setuptools users, please let us know about them there, so this reference list can be updated. If you have working, tested patches to correct problems or add features, you may submit them to the setuptools bug tracker.

Credits

The original design for the .egg format and the pkg_resources API was co-created by Phillip Eby and Bob Ippolito. Bob also implemented the first version of pkg_resources, and supplied the OS X operating system version compatibility algorithm.
Ian Bicking implemented many early "creature comfort" features of easy_install, including support for downloading via Sourceforge and Subversion repositories. Ian's comments on the Web-SIG about WSGI application deployment also inspired the concept of "entry points" in eggs, and he has given talks at PyCon and elsewhere to inform and educate the community about eggs and setuptools.
Jim Fulton contributed time and effort to build automated tests of various aspects of easy_install, and supplied the doctests for the command-line .exe wrappers on Windows.
Phillip J. Eby is the seminal author of setuptools, and first proposed the idea of an importable binary distribution format for Python application plug-ins.
Significant parts of the implementation of setuptools were funded by the Open Source Applications Foundation, to provide a plug-in infrastructure for the Chandler PIM application. In addition, many OSAF staffers (such as Mike "Code Bear" Taylor) contributed their time and stress as guinea pigs for the use of eggs and setuptools, even before eggs were "cool". (Thanks, guys!)
Tarek Ziadé is the principal author of the Distribute fork, which re-invigorated the community on the project, encouraged renewed innovation, and addressed many defects.
Since the merge with Distribute, Jason R. Coombs is the maintainer of setuptools. The project is maintained in coordination with the Python Packaging Authority (PyPA) and the larger Python community.

CHANGES

6.1

Issue #268: When resolving package versions, a VersionConflict now reports which package previously required the conflicting version.

6.0.2

Issue #262: Fixed regression in pip install due to egg-info directories being omitted. Re-opens Issue #118.

6.0.1

Issue #259: Fixed regression with namespace package handling on single version, externally managed installs.

6.0

Issue #100: When building a distribution, Setuptools will no longer match default files using platform-dependent case sensitivity, but rather will only match the files if their case matches exactly. As a result, on Windows and other case-insensitive file systems, files with names such as 'readme.txt' or 'README.TXT' will be omitted from the distribution and a warning will be issued indicating that 'README.txt' was not found. Other filenames affected are:
- README.rst
- README
- setup.cfg
- setup.py (or the script name)
- test/test*.py
Any users producing distributions with filenames that match those above case-insensitively, but not case-sensitively, should rename those files in their repository for better portability.
Pull Request #72: When using single_version_externally_managed, the exclusion list now includes Python 3.2 __pycache__ entries.
Pull Request #76 and Pull Request #78: lines in top_level.txt are now ordered deterministically.
Issue #118: The egg-info directory is now no longer included in the list of outputs.
Issue #258: Setuptools now patches distutils msvc9compiler to recognize the specially-packaged compiler package for easy extension module support on Python 2.6, 2.7, and 3.2.

5.8

Issue #237: pkg_resources now uses explicit detection of Python 2 vs. Python 3, supporting environments where builtins have been patched to make Python 3 look more like Python 2.

5.7

Issue #240: Based on real-world performance measures against 5.4, zip manifests are now cached in all circumstances. The PKG_RESOURCES_CACHE_ZIP_MANIFESTS environment variable is no longer relevant. The observed "memory increase" referenced in the 5.4 release notes and detailed in Issue #154 was likely not an increase over the status quo, but rather only an increase over not storing the zip info at all.

5.6

Issue #242: Use absolute imports in svn_utils to avoid issues if the installing package adds an xml module to the path.

5.5.1

Issue #239: Fix typo in 5.5 such that fix did not take.

5.5

Issue #239: Setuptools now includes the setup_requires directive on Distribution objects and validates the syntax just like install_requires and tests_require directives.

5.4.2

Issue #236: Corrected regression in execfile implementation for Python 2.6.

5.4.1

Python #7776: (ssl_support) Correct usage of host for validation when tunneling for HTTPS.

5.4

Issue #154: pkg_resources will now cache the zip manifests rather than re-processing the same file from disk multiple times, but only if the environment variable PKG_RESOURCES_CACHE_ZIP_MANIFESTS is set. Clients that package many modules in the same zip file will see some improvement in startup time by enabling this feature. This feature is not enabled by default because it causes a substantial increase in memory usage.

5.3

Issue #185: Make svn tagging work on the new style SVN metadata. Thanks cazabon!
Prune revision control directories (e.g .svn) from base path as well as sub-directories.

5.2

Added a Developer Guide to the official documentation.
Some code refactoring and cleanup was done with no intended behavioral changes.
During install_egg_info, the generated lines for namespace package .pth files are now processed even during a dry run.

5.1

Issue #202: Implemented more robust cache invalidation for the ZipImporter, building on the work in Issue #168. Special thanks to Jurko Gospodnetic and PJE.

5.0.2

Issue #220: Restored script templates.

5.0.1

Renamed script templates to end with .tmpl now that they no longer need to be processed by 2to3. Fixes spurious syntax errors during build/install.

5.0

Issue #218: Re-release of 3.8.1 to signal that it supersedes 4.x.
Incidentally, script templates were updated not to include the triple-quote escaping.

3.7.1 and 3.8.1 and 4.0.1

Issue #213: Use legacy StringIO behavior for compatibility under pbr.
Issue #218: Setuptools 3.8.1 superseded 4.0.1, and 4.x was removed from the available versions to install.

4.0

Issue #210: setup.py develop now copies scripts in binary mode rather than text mode, matching the behavior of the install command.

3.8

Extend Issue #197 workaround to include all Python 3 versions prior to 3.2.2.

3.7

Issue #193: Improved handling of Unicode filenames when building manifests.

3.6

Issue #203: Honor proxy settings for Powershell downloader in the bootstrap routine.

3.5.2

Issue #168: More robust handling of replaced zip files and stale caches. Fixes ZipImportError complaining about a 'bad local header'.

3.5.1

Issue #199: Restored install._install for compatibility with earlier NumPy versions.

3.5

Issue #195: Follow symbolic links in find_packages (restoring behavior broken in 3.4).
Issue #197: On Python 3.1, PKG-INFO is now saved in a UTF-8 encoding instead of sys.getpreferredencoding to match the behavior on Python 2.6-3.4.
Issue #192: Preferred bootstrap location is now https://bootstrap.pypa.io/ez_setup.py (mirrored from former location).

3.4.4

Issue #184: Correct failure where find_package over-matched packages when directory traversal isn't short-circuited.

3.4.3

Issue #183: Really fix test command with Python 3.1.

3.4.2

Issue #183: Fix additional regression in test command on Python 3.1.

3.4.1

Issue #180: Fix regression in test command not caught by py.test-run tests.

3.4

Issue #176: Add parameter to the test command to support a custom test runner: --test-runner or -r.
Issue #177: Now assume most common invocation to install command on platforms/environments without stack support (issuing a warning). Setuptools now installs naturally on IronPython. Behavior on CPython should be unchanged.

3.3

Add include parameter to setuptools.find_packages().

3.2

Pull Request #39: Add support for C++ targets from Cython .pyx files.
Issue #162: Update dependency on certifi to 1.0.1.
Issue #164: Update dependency on wincertstore to 0.2.

3.1

Issue #161: Restore Features functionality to allow backward compatibility (for Features) until the uses of that functionality is sufficiently removed.

3.0.2

Correct typo in previous bugfix.

3.0.1

Issue #157: Restore support for Python 2.6 in bootstrap script where zipfile.ZipFile does not yet have support for context managers.

3.0

Issue #125: Prevent Subversion support from creating a ~/.subversion directory just for checking the presence of a Subversion repository.
Issue #12: Namespace packages are now imported lazily. That is, the mere declaration of a namespace package in an egg on sys.path no longer causes it to be imported when pkg_resources is imported. Note that this change means that all of a namespace package's __init__.py files must include a declare_namespace() call in order to ensure that they will be handled properly at runtime. In 2.x it was possible to get away without including the declaration, but only at the cost of forcing namespace packages to be imported early, which 3.0 no longer does.
Issue #148: When building (bdist_egg), setuptools no longer adds __init__.py files to namespace packages. Any packages that rely on this behavior will need to create __init__.py files and include the declare_namespace().
Issue #7: Setuptools itself is now distributed as a zip archive in addition to tar archive. ez_setup.py now uses zip archive. This approach avoids the potential security vulnerabilities presented by use of tar archives in ez_setup.py. It also leverages the security features added to ZipFile.extract in Python 2.7.4.
Issue #65: Removed deprecated Features functionality.
Pull Request #28: Remove backport of _bytecode_filenames which is available in Python 2.6 and later, but also has better compatibility with Python 3 environments.
Issue #156: Fix spelling of __PYVENV_LAUNCHER__ variable.

2.2

Issue #141: Restored fix for allowing setup_requires dependencies to override installed dependencies during setup.
Issue #128: Fixed issue where only the first dependency link was honored in a distribution where multiple dependency links were supplied.

2.1.2

Issue #144: Read long_description using codecs module to avoid errors installing on systems where LANG=C.

2.1.1

Issue #139: Fix regression in re_finder for CVS repos (and maybe Git repos as well).

2.1

Issue #129: Suppress inspection of *.whl files when searching for files in a zip-imported file.
Issue #131: Fix RuntimeError when constructing an egg fetcher.

2.0.2

Fix NameError during installation with Python implementations (e.g. Jython) not containing parser module.
Fix NameError in sdist:re_finder.

2.0.1

Issue #124: Fixed error in list detection in upload_docs.

2.0

Issue #121: Exempt lib2to3 pickled grammars from DirectorySandbox.
Issue #41: Dropped support for Python 2.4 and Python 2.5. Clients requiring setuptools for those versions of Python should use setuptools 1.x.
Removed setuptools.command.easy_install.HAS_USER_SITE. Clients expecting this boolean variable should use site.ENABLE_USER_SITE instead.
Removed pkg_resources.ImpWrapper. Clients that expected this class should use pkgutil.ImpImporter instead.

1.4.2

Issue #116: Correct TypeError when reading a local package index on Python 3.

1.4.1

Issue #114: Use sys.getfilesystemencoding for decoding config in bdist_wininst distributions.

Issue #105 and Issue #113: Establish a more robust technique for determining the terminal encoding:

1. Try ``getpreferredencoding``
2. If that returns US_ASCII or None, try the encoding from
   ``getdefaultlocale``. If that encoding was a "fallback" because Python
   could not figure it out from the environment or OS, encoding remains
   unresolved.
3. If the encoding is resolved, then make sure Python actually implements
   the encoding.
4. On the event of an error or unknown codec, revert to fallbacks
   (UTF-8 on Darwin, ASCII on everything else).
5. On the encoding is 'mac-roman' on Darwin, use UTF-8 as 'mac-roman' was
   a bug on older Python releases.

On a side note, it would seem that the encoding only matters for when SVN
does not yet support ``--xml`` and when getting repository and svn version
numbers. The ``--xml`` technique should yield UTF-8 according to some
messages on the SVN mailing lists. So if the version numbers are always
7-bit ASCII clean, it may be best to only support the file parsing methods
for legacy SVN releases and support for SVN without the subprocess command
would simple go away as support for the older SVNs does.

1.4

Issue #27: easy_install will now use credentials from .pypirc if present for connecting to the package index.
Pull Request #21: Omit unwanted newlines in package_index._encode_auth when the username/password pair length indicates wrapping.

1.3.2

Issue #99: Fix filename encoding issues in SVN support.

1.3.1

Remove exuberant warning in SVN support when SVN is not used.

1.3

Address security vulnerability in SSL match_hostname check as reported in Python #17997.
Prefer backports.ssl_match_hostname for backport implementation if present.
Correct NameError in ssl_support module (socket.error).

1.2

Issue #26: Add support for SVN 1.7. Special thanks to Philip Thiem for the contribution.
Issue #93: Wheels are now distributed with every release. Note that as reported in Issue #108, as of Pip 1.4, scripts aren't installed properly from wheels. Therefore, if using Pip to install setuptools from a wheel, the easy_install command will not be available.
Setuptools "natural" launcher support, introduced in 1.0, is now officially supported.

1.1.7

Fixed behavior of NameError handling in 'script template (dev).py' (script launcher for 'develop' installs).
ez_setup.py now ensures partial downloads are cleaned up following a failed download.
Distribute #363 and Issue #55: Skip an sdist test that fails on locales other than UTF-8.

1.1.6

Distribute #349: sandbox.execfile now opens the target file in binary mode, thus honoring a BOM in the file when compiled.

1.1.5

Issue #69: Second attempt at fix (logic was reversed).

1.1.4

Issue #77: Fix error in upload command (Python 2.4).

1.1.3

Fix NameError in previous patch.

1.1.2

Issue #69: Correct issue where 404 errors are returned for URLs with fragments in them (such as #egg=).

1.1.1

Issue #75: Add --insecure option to ez_setup.py to accommodate environments where a trusted SSL connection cannot be validated.
Issue #76: Fix AttributeError in upload command with Python 2.4.

1.1

Issue #71 (Distribute #333): EasyInstall now puts less emphasis on the condition when a host is blocked via --allow-hosts.
Issue #72: Restored Python 2.4 compatibility in ez_setup.py.

1.0

Issue #60: On Windows, Setuptools supports deferring to another launcher, such as Vinay Sajip's pylauncher (included with Python 3.3) to launch console and GUI scripts and not install its own launcher executables. This experimental functionality is currently only enabled if the SETUPTOOLS_LAUNCHER environment variable is set to "natural". In the future, this behavior may become default, but only after it has matured and seen substantial adoption. The SETUPTOOLS_LAUNCHER also accepts "executable" to force the default behavior of creating launcher executables.
Issue #63: Bootstrap script (ez_setup.py) now prefers Powershell, curl, or wget for retrieving the Setuptools tarball for improved security of the install. The script will still fall back to a simple urlopen on platforms that do not have these tools.
Issue #65: Deprecated the Features functionality.
Issue #52: In VerifyingHTTPSConn, handle a tunnelled (proxied) connection.

Backward-Incompatible Changes

This release includes a couple of backward-incompatible changes, but most if not all users will find 1.0 a drop-in replacement for 0.9.

Issue #50: Normalized API of environment marker support. Specifically, removed line number and filename from SyntaxErrors when returned from pkg_resources.invalid_marker. Any clients depending on the specific string representation of exceptions returned by that function may need to be updated to account for this change.
Issue #50: SyntaxErrors generated by pkg_resources.invalid_marker are normalized for cross-implementation consistency.
Removed --ignore-conflicts-at-my-risk and --delete-conflicting options to easy_install. These options have been deprecated since 0.6a11.

0.9.8

Issue #53: Fix NameErrors in _vcs_split_rev_from_url.

0.9.7

Issue #49: Correct AttributeError on PyPy where a hashlib.HASH object does not have a .name attribute.
Issue #34: Documentation now refers to bootstrap script in code repository referenced by bookmark.
Add underscore-separated keys to environment markers (markerlib).

0.9.6

Issue #44: Test failure on Python 2.4 when MD5 hash doesn't have a .name attribute.

0.9.5

Python #17980: Fix security vulnerability in SSL certificate validation.

0.9.4

Issue #43: Fix issue (introduced in 0.9.1) with version resolution when upgrading over other releases of Setuptools.

0.9.3

Issue #42: Fix new AttributeError introduced in last fix.

0.9.2

Issue #42: Fix regression where blank checksums would trigger an AttributeError.

0.9.1

Distribute #386: Allow other positional and keyword arguments to os.open.
Corrected dependency on certifi mis-referenced in 0.9.

0.9

package_index now validates hashes other than MD5 in download links.

0.8

Code base now runs on Python 2.4 - Python 3.3 without Python 2to3 conversion.

0.7.8

Distribute #375: Yet another fix for yet another regression.

0.7.7

Distribute #375: Repair AttributeError created in last release (redo).
Issue #30: Added test for get_cache_path.

0.7.6

Distribute #375: Repair AttributeError created in last release.

0.7.5

Issue #21: Restore Python 2.4 compatibility in test_easy_install.
Distribute #375: Merged additional warning from Distribute 0.6.46.
Now honor the environment variable SETUPTOOLS_DISABLE_VERSIONED_EASY_INSTALL_SCRIPT in addition to the now deprecated DISTRIBUTE_DISABLE_VERSIONED_EASY_INSTALL_SCRIPT.

0.7.4

Issue #20: Fix comparison of parsed SVN version on Python 3.

0.7.3

Issue #1: Disable installation of Windows-specific files on non-Windows systems.
Use new sysconfig module with Python 2.7 or >=3.2.

0.7.2

Issue #14: Use markerlib when the parser module is not available.
Issue #10: ez_setup.py now uses HTTPS to download setuptools from PyPI.

0.7.1

Fix NameError (Issue #3) again - broken in bad merge.

0.7

Merged Setuptools and Distribute. See docs/merge.txt for details.

Added several features that were slated for setuptools 0.6c12:

Index URL now defaults to HTTPS.
Added experimental environment marker support. Now clients may designate a PEP-426 environment marker for "extra" dependencies. Setuptools uses this feature in setup.py for optional SSL and certificate validation support on older platforms. Based on Distutils-SIG discussions, the syntax is somewhat tentative. There should probably be a PEP with a firmer spec before the feature should be considered suitable for use.
Added support for SSL certificate validation when installing packages from an HTTPS service.

0.7b4

Issue #3: Fixed NameError in SSL support.

0.6.49

Move warning check in get_cache_path to follow the directory creation to avoid errors when the cache path does not yet exist. Fixes the error reported in Distribute #375.

0.6.48

Correct AttributeError in ResourceManager.get_cache_path introduced in 0.6.46 (redo).

0.6.47

Correct AttributeError in ResourceManager.get_cache_path introduced in 0.6.46.

0.6.46

Distribute #375: Issue a warning if the PYTHON_EGG_CACHE or otherwise customized egg cache location specifies a directory that's group- or world-writable.

0.6.45

Distribute #379: distribute_setup.py now traps VersionConflict as well, restoring ability to upgrade from an older setuptools version.

0.6.44

distribute_setup.py has been updated to allow Setuptools 0.7 to satisfy use_setuptools.

0.6.43

Distribute #378: Restore support for Python 2.4 Syntax (regression in 0.6.42).

0.6.42

External links finder no longer yields duplicate links.
Distribute #337: Moved site.py to setuptools/site-patch.py (graft of very old patch from setuptools trunk which inspired PR #31).

0.6.41

Distribute #27: Use public api for loading resources from zip files rather than the private method _zip_directory_cache.
Added a new function easy_install.get_win_launcher which may be used by third-party libraries such as buildout to get a suitable script launcher.

0.6.40

Distribute #376: brought back cli.exe and gui.exe that were deleted in the previous release.

0.6.39

Add support for console launchers on ARM platforms.
Fix possible issue in GUI launchers where the subsystem was not supplied to the linker.
Launcher build script now refactored for robustness.
Distribute #375: Resources extracted from a zip egg to the file system now also check the contents of the file against the zip contents during each invocation of get_resource_filename.

0.6.38

Distribute #371: The launcher manifest file is now installed properly.

0.6.37

Distribute #143: Launcher scripts, including easy_install itself, are now accompanied by a manifest on 32-bit Windows environments to avoid the Installer Detection Technology and thus undesirable UAC elevation described in this Microsoft article.

0.6.36

Pull Request #35: In Buildout #64, it was reported that under Python 3, installation of distutils scripts could attempt to copy the __pycache__ directory as a file, causing an error, apparently only under Windows. Easy_install now skips all directories when processing metadata scripts.

0.6.35

Note this release is backward-incompatible with distribute 0.6.23-0.6.34 in how it parses version numbers.

Distribute #278: Restored compatibility with distribute 0.6.22 and setuptools 0.6. Updated the documentation to match more closely with the version parsing as intended in setuptools 0.6.

0.6.34

Distribute #341: 0.6.33 fails to build under Python 2.4.

0.6.33

Fix 2 errors with Jython 2.5.
Fix 1 failure with Jython 2.5 and 2.7.
Disable workaround for Jython scripts on Linux systems.
Distribute #336: setup.py no longer masks failure exit code when tests fail.
Fix issue in pkg_resources where try/except around a platform-dependent import would trigger hook load failures on Mercurial. See pull request 32 for details.
Distribute #341: Fix a ResourceWarning.

0.6.32

Fix test suite with Python 2.6.
Fix some DeprecationWarnings and ResourceWarnings.
Distribute #335: Backed out setup_requires superceding installed requirements until regression can be addressed.

0.6.31

Distribute #303: Make sure the manifest only ever contains UTF-8 in Python 3.
Distribute #329: Properly close files created by tests for compatibility with Jython.
Work around Jython #1980 and Jython #1981.
Distribute #334: Provide workaround for packages that reference sys.__stdout__ such as numpy does. This change should address virtualenv `#359 <https://github.com/pypa/virtualenv/issues/359>`_ as long as the system encoding is UTF-8 or the IO encoding is specified in the environment, i.e.:
```
PYTHONIOENCODING=utf8 pip install numpy
```
Fix for encoding issue when installing from Windows executable on Python 3.
Distribute #323: Allow setup_requires requirements to supercede installed requirements. Added some new keyword arguments to existing pkg_resources methods. Also had to updated how __path__ is handled for namespace packages to ensure that when a new egg distribution containing a namespace package is placed on sys.path, the entries in __path__ are found in the same order they would have been in had that egg been on the path when pkg_resources was first imported.

0.6.30

Distribute #328: Clean up temporary directories in distribute_setup.py.
Fix fatal bug in distribute_setup.py.

0.6.29

Pull Request #14: Honor file permissions in zip files.
Distribute #327: Merged pull request #24 to fix a dependency problem with pip.
Merged pull request #23 to fix https://github.com/pypa/virtualenv/issues/301.
If Sphinx is installed, the upload_docs command now runs build_sphinx to produce uploadable documentation.
Distribute #326: upload_docs provided mangled auth credentials under Python 3.
Distribute #320: Fix check for "createable" in distribute_setup.py.
Distribute #305: Remove a warning that was triggered during normal operations.
Distribute #311: Print metadata in UTF-8 independent of platform.
Distribute #303: Read manifest file with UTF-8 encoding under Python 3.
Distribute #301: Allow to run tests of namespace packages when using 2to3.
Distribute #304: Prevent import loop in site.py under Python 3.3.
Distribute #283: Reenable scanning of *.pyc / *.pyo files on Python 3.3.
Distribute #299: The develop command didn't work on Python 3, when using 2to3, as the egg link would go to the Python 2 source. Linking to the 2to3'd code in build/lib makes it work, although you will have to rebuild the module before testing it.
Distribute #306: Even if 2to3 is used, we build in-place under Python 2.
Distribute #307: Prints the full path when .svn/entries is broken.
Distribute #313: Support for sdist subcommands (Python 2.7)
Distribute #314: test_local_index() would fail an OS X.
Distribute #310: Non-ascii characters in a namespace __init__.py causes errors.
Distribute #218: Improved documentation on behavior of package_data and include_package_data. Files indicated by package_data are now included in the manifest.
distribute_setup.py now allows a --download-base argument for retrieving distribute from a specified location.

0.6.28

Distribute #294: setup.py can now be invoked from any directory.
Scripts are now installed honoring the umask.
Added support for .dist-info directories.
Distribute #283: Fix and disable scanning of *.pyc / *.pyo files on Python 3.3.

0.6.27

Support current snapshots of CPython 3.3.
Distribute now recognizes README.rst as a standard, default readme file.
Exclude 'encodings' modules when removing modules from sys.modules. Workaround for #285.
Distribute #231: Don't fiddle with system python when used with buildout (bootstrap.py)

0.6.26

Distribute #183: Symlinked files are now extracted from source distributions.
Distribute #227: Easy_install fetch parameters are now passed during the installation of a source distribution; now fulfillment of setup_requires dependencies will honor the parameters passed to easy_install.

0.6.25

Distribute #258: Workaround a cache issue
Distribute #260: distribute_setup.py now accepts the --user parameter for Python 2.6 and later.
Distribute #262: package_index.open_with_auth no longer throws LookupError on Python 3.
Distribute #269: AttributeError when an exception occurs reading Manifest.in on late releases of Python.
Distribute #272: Prevent TypeError when namespace package names are unicode and single-install-externally-managed is used. Also fixes PIP issue 449.
Distribute #273: Legacy script launchers now install with Python2/3 support.

0.6.24

Distribute #249: Added options to exclude 2to3 fixers

0.6.23

Distribute #244: Fixed a test
Distribute #243: Fixed a test
Distribute #239: Fixed a test
Distribute #240: Fixed a test
Distribute #241: Fixed a test
Distribute #237: Fixed a test
Distribute #238: easy_install now uses 64bit executable wrappers on 64bit Python
Distribute #208: Fixed parsed_versions, it now honors post-releases as noted in the documentation
Distribute #207: Windows cli and gui wrappers pass CTRL-C to child python process
Distribute #227: easy_install now passes its arguments to setup.py bdist_egg
Distribute #225: Fixed a NameError on Python 2.5, 2.4

0.6.21

Distribute #225: FIxed a regression on py2.4

0.6.20

Distribute #135: Include url in warning when processing URLs in package_index.
Distribute #212: Fix issue where easy_instal fails on Python 3 on windows installer.
Distribute #213: Fix typo in documentation.

0.6.19

Distribute #206: AttributeError: 'HTTPMessage' object has no attribute 'getheaders'

0.6.18

Distribute #210: Fixed a regression introduced by Distribute #204 fix.

0.6.17

Support 'DISTRIBUTE_DISABLE_VERSIONED_EASY_INSTALL_SCRIPT' environment variable to allow to disable installation of easy_install-${version} script.
Support Python >=3.1.4 and >=3.2.1.
Distribute #204: Don't try to import the parent of a namespace package in declare_namespace
Distribute #196: Tolerate responses with multiple Content-Length headers
Distribute #205: Sandboxing doesn't preserve working_set. Leads to setup_requires problems.

0.6.16

Builds sdist gztar even on Windows (avoiding Distribute #193).
Distribute #192: Fixed metadata omitted on Windows when package_dir specified with forward-slash.
Distribute #195: Cython build support.
Distribute #200: Issues with recognizing 64-bit packages on Windows.

0.6.15

Fixed typo in bdist_egg
Several issues under Python 3 has been solved.
Distribute #146: Fixed missing DLL files after easy_install of windows exe package.

0.6.14

Distribute #170: Fixed unittest failure. Thanks to Toshio.
Distribute #171: Fixed race condition in unittests cause deadlocks in test suite.
Distribute #143: Fixed a lookup issue with easy_install. Thanks to David and Zooko.
Distribute #174: Fixed the edit mode when its used with setuptools itself

0.6.13

Distribute #160: 2.7 gives ValueError("Invalid IPv6 URL")
Distribute #150: Fixed using ~/.local even in a --no-site-packages virtualenv
Distribute #163: scan index links before external links, and don't use the md5 when comparing two distributions

0.6.12

Distribute #149: Fixed various failures on 2.3/2.4

0.6.11

Found another case of SandboxViolation - fixed
Distribute #15 and Distribute #48: Introduced a socket timeout of 15 seconds on url openings
Added indexsidebar.html into MANIFEST.in
Distribute #108: Fixed TypeError with Python3.1
Distribute #121: Fixed --help install command trying to actually install.
Distribute #112: Added an os.makedirs so that Tarek's solution will work.
Distribute #133: Added --no-find-links to easy_install
Added easy_install --user
Distribute #100: Fixed develop --user not taking '.' in PYTHONPATH into account
Distribute #134: removed spurious UserWarnings. Patch by VanLindberg
Distribute #138: cant_write_to_target error when setup_requires is used.
Distribute #147: respect the sys.dont_write_bytecode flag

0.6.10

Reverted change made for the DistributionNotFound exception because zc.buildout uses the exception message to get the name of the distribution.

0.6.9

Distribute #90: unknown setuptools version can be added in the working set
Distribute #87: setupt.py doesn't try to convert distribute_setup.py anymore Initial Patch by arfrever.
Distribute #89: added a side bar with a download link to the doc.
Distribute #86: fixed missing sentence in pkg_resources doc.
Added a nicer error message when a DistributionNotFound is raised.
Distribute #80: test_develop now works with Python 3.1
Distribute #93: upload_docs now works if there is an empty sub-directory.
Distribute #70: exec bit on non-exec files
Distribute #99: now the standalone easy_install command doesn't uses a "setup.cfg" if any exists in the working directory. It will use it only if triggered by install_requires from a setup.py call (install, develop, etc).
Distribute #101: Allowing os.devnull in Sandbox
Distribute #92: Fixed the "no eggs" found error with MacPort (platform.mac_ver() fails)
Distribute #103: test_get_script_header_jython_workaround not run anymore under py3 with C or POSIX local. Contributed by Arfrever.
Distribute #104: remvoved the assertion when the installation fails, with a nicer message for the end user.
Distribute #100: making sure there's no SandboxViolation when the setup script patches setuptools.

0.6.8

Added "check_packages" in dist. (added in Setuptools 0.6c11)
Fixed the DONT_PATCH_SETUPTOOLS state.

0.6.7

Distribute #58: Added --user support to the develop command
Distribute #11: Generated scripts now wrap their call to the script entry point in the standard "if name == 'main'"
Added the 'DONT_PATCH_SETUPTOOLS' environment variable, so virtualenv can drive an installation that doesn't patch a global setuptools.
Reviewed unladen-swallow specific change from http://code.google.com/p/unladen-swallow/source/detail?spec=svn875&r=719 and determined that it no longer applies. Distribute should work fine with Unladen Swallow 2009Q3.
Distribute #21: Allow PackageIndex.open_url to gracefully handle all cases of a httplib.HTTPException instead of just InvalidURL and BadStatusLine.
Removed virtual-python.py from this distribution and updated documentation to point to the actively maintained virtualenv instead.
Distribute #64: use_setuptools no longer rebuilds the distribute egg every time it is run
use_setuptools now properly respects the requested version
use_setuptools will no longer try to import a distribute egg for the wrong Python version
Distribute #74: no_fake should be True by default.
Distribute #72: avoid a bootstrapping issue with easy_install -U

0.6.6

Unified the bootstrap file so it works on both py2.x and py3k without 2to3 (patch by Holger Krekel)

0.6.5

Distribute #65: cli.exe and gui.exe are now generated at build time, depending on the platform in use.
Distribute #67: Fixed doc typo (PEP 381/382)
Distribute no longer shadows setuptools if we require a 0.7-series setuptools. And an error is raised when installing a 0.7 setuptools with distribute.
When run from within buildout, no attempt is made to modify an existing setuptools egg, whether in a shared egg directory or a system setuptools.
Fixed a hole in sandboxing allowing builtin file to write outside of the sandbox.

0.6.4

Added the generation of distribute_setup_3k.py during the release. This closes Distribute #52.
Added an upload_docs command to easily upload project documentation to PyPI's https://pythonhosted.org. This close issue Distribute #56.
Fixed a bootstrap bug on the use_setuptools() API.

0.6.3

setuptools

Fixed a bunch of calls to file() that caused crashes on Python 3.

bootstrapping

Fixed a bug in sorting that caused bootstrap to fail on Python 3.

0.6.2

setuptools

Added Python 3 support; see docs/python3.txt. This closes Old Setuptools #39.
Added option to run 2to3 automatically when installing on Python 3. This closes issue Distribute #31.
Fixed invalid usage of requirement.parse, that broke develop -d. This closes Old Setuptools #44.
Fixed script launcher for 64-bit Windows. This closes Old Setuptools #2.
KeyError when compiling extensions. This closes Old Setuptools #41.

bootstrapping

Fixed bootstrap not working on Windows. This closes issue Distribute #49.
Fixed 2.6 dependencies. This closes issue Distribute #50.
Make sure setuptools is patched when running through easy_install This closes Old Setuptools #40.

0.6.1

setuptools

package_index.urlopen now catches BadStatusLine and malformed url errors. This closes Distribute #16 and Distribute #18.
zip_ok is now False by default. This closes Old Setuptools #33.
Fixed invalid URL error catching. Old Setuptools #20.
Fixed invalid bootstraping with easy_install installation (Distribute #40). Thanks to Florian Schulze for the help.
Removed buildout/bootstrap.py. A new repository will create a specific bootstrap.py script.

bootstrapping

The boostrap process leave setuptools alone if detected in the system and --root or --prefix is provided, but is not in the same location. This closes Distribute #10.

0.6

setuptools

Packages required at build time where not fully present at install time. This closes Distribute #12.
Protected against failures in tarfile extraction. This closes Distribute #10.
Made Jython api_tests.txt doctest compatible. This closes Distribute #7.
sandbox.py replaced builtin type file with builtin function open. This closes Distribute #6.
Immediately close all file handles. This closes Distribute #3.
Added compatibility with Subversion 1.6. This references Distribute #1.

pkg_resources

Avoid a call to /usr/bin/sw_vers on OSX and use the official platform API instead. Based on a patch from ronaldoussoren. This closes issue #5.
Fixed a SandboxViolation for mkdir that could occur in certain cases. This closes Distribute #13.
Allow to find_on_path on systems with tight permissions to fail gracefully. This closes Distribute #9.
Corrected inconsistency between documentation and code of add_entry. This closes Distribute #8.
Immediately close all file handles. This closes Distribute #3.

easy_install

Immediately close all file handles. This closes Distribute #3.

0.6c9

Fixed a missing files problem when using Windows source distributions on non-Windows platforms, due to distutils not handling manifest file line endings correctly.

Updated Pyrex support to work with Pyrex 0.9.6 and higher.

Minor changes for Jython compatibility, including skipping tests that can't work on Jython.

Fixed not installing eggs in install_requires if they were also used for setup_requires or tests_require.

Fixed not fetching eggs in install_requires when running tests.

Allow ez_setup.use_setuptools() to upgrade existing setuptools installations when called from a standalone setup.py.

Added a warning if a namespace package is declared, but its parent package is not also declared as a namespace.

Support Subversion 1.5

Removed use of deprecated md5 module if hashlib is available

Fixed bdist_wininst upload trying to upload the .exe twice

Fixed bdist_egg putting a native_libs.txt in the source package's .egg-info, when it should only be in the built egg's EGG-INFO.

Ensure that _full_name is set on all shared libs before extensions are checked for shared lib usage. (Fixes a bug in the experimental shared library build support.)

Fix to allow unpacked eggs containing native libraries to fail more gracefully under Google App Engine (with an ImportError loading the C-based module, instead of getting a NameError).

0.6c7

Fixed distutils.filelist.findall() crashing on broken symlinks, and egg_info command failing on new, uncommitted SVN directories.

Fix import problems with nested namespace packages installed via --root or --single-version-externally-managed, due to the parent package not having the child package as an attribute.

0.6c6

Added --egg-path option to develop command, allowing you to force .egg-link files to use relative paths (allowing them to be shared across platforms on a networked drive).

Fix not building binary RPMs correctly.

Fix "eggsecutables" (such as setuptools' own egg) only being runnable with bash-compatible shells.

Fix #! parsing problems in Windows .exe script wrappers, when there was whitespace inside a quoted argument or at the end of the #! line (a regression introduced in 0.6c4).

Fix test command possibly failing if an older version of the project being tested was installed on sys.path ahead of the test source directory.

Fix find_packages() treating ez_setup and directories with . in their names as packages.

0.6c5

Fix uploaded bdist_rpm packages being described as bdist_egg packages under Python versions less than 2.5.

Fix uploaded bdist_wininst packages being described as suitable for "any" version by Python 2.5, even if a --target-version was specified.

0.6c4

Overhauled Windows script wrapping to support bdist_wininst better. Scripts installed with bdist_wininst will always use #!python.exe or #!pythonw.exe as the executable name (even when built on non-Windows platforms!), and the wrappers will look for the executable in the script's parent directory (which should find the right version of Python).

Fix upload command not uploading files built by bdist_rpm or bdist_wininst under Python 2.3 and 2.4.

Add support for "eggsecutable" headers: a #!/bin/sh script that is prepended to an .egg file to allow it to be run as a script on Unix-ish platforms. (This is mainly so that setuptools itself can have a single-file installer on Unix, without doing multiple downloads, dealing with firewalls, etc.)

Fix problem with empty revision numbers in Subversion 1.4 entries files

Use cross-platform relative paths in easy-install.pth when doing develop and the source directory is a subdirectory of the installation target directory.

Fix a problem installing eggs with a system packaging tool if the project contained an implicit namespace package; for example if the setup() listed a namespace package foo.bar without explicitly listing foo as a namespace package.

0.6c3

Fixed breakages caused by Subversion 1.4's new "working copy" format

0.6c2

The ez_setup module displays the conflicting version of setuptools (and its installation location) when a script requests a version that's not available.

Running setup.py develop on a setuptools-using project will now install setuptools if needed, instead of only downloading the egg.

0.6c1

Fixed AttributeError when trying to download a setup_requires dependency when a distribution lacks a dependency_links setting.

Made zip-safe and not-zip-safe flag files contain a single byte, so as to play better with packaging tools that complain about zero-length files.

Made setup.py develop respect the --no-deps option, which it previously was ignoring.

Support extra_path option to setup() when install is run in backward-compatibility mode.

Source distributions now always include a setup.cfg file that explicitly sets egg_info options such that they produce an identical version number to the source distribution's version number. (Previously, the default version number could be different due to the use of --tag-date, or if the version was overridden on the command line that built the source distribution.)

0.6b4

Fix register not obeying name/version set by egg_info command, if egg_info wasn't explicitly run first on the same command line.

Added --no-date and --no-svn-revision options to egg_info command, to allow suppressing tags configured in setup.cfg.

Fixed redundant warnings about missing README file(s); it should now appear only if you are actually a source distribution.

0.6b3

Fix bdist_egg not including files in subdirectories of .egg-info.

Allow .py files found by the include_package_data option to be automatically included. Remove duplicate data file matches if both include_package_data and package_data are used to refer to the same files.

0.6b1

Strip module from the end of compiled extension modules when computing the name of a .py loader/wrapper. (Python's import machinery ignores this suffix when searching for an extension module.)

0.6a11

Added test_loader keyword to support custom test loaders

Added setuptools.file_finders entry point group to allow implementing revision control plugins.

Added --identity option to upload command.

Added dependency_links to allow specifying URLs for --find-links.

Enhanced test loader to scan packages as well as modules, and call additional_tests() if present to get non-unittest tests.

Support namespace packages in conjunction with system packagers, by omitting the installation of any __init__.py files for namespace packages, and adding a special .pth file to create a working package in sys.modules.

Made --single-version-externally-managed automatic when --root is used, so that most system packagers won't require special support for setuptools.

Fixed setup_requires, tests_require, etc. not using setup.cfg or other configuration files for their option defaults when installing, and also made the install use --multi-version mode so that the project directory doesn't need to support .pth files.

MANIFEST.in is now forcibly closed when any errors occur while reading it. Previously, the file could be left open and the actual error would be masked by problems trying to remove the open file on Windows systems.

0.6a10

Fixed the develop command ignoring --find-links.

0.6a9

The sdist command no longer uses the traditional MANIFEST file to create source distributions. MANIFEST.in is still read and processed, as are the standard defaults and pruning. But the manifest is built inside the project's .egg-info directory as SOURCES.txt, and it is rebuilt every time the egg_info command is run.

Added the include_package_data keyword to setup(), allowing you to automatically include any package data listed in revision control or MANIFEST.in

Added the exclude_package_data keyword to setup(), allowing you to trim back files included via the package_data and include_package_data options.

Fixed --tag-svn-revision not working when run from a source distribution.

Added warning for namespace packages with missing declare_namespace()

Added tests_require keyword to setup(), so that e.g. packages requiring nose to run unit tests can make this dependency optional unless the test command is run.

Made all commands that use easy_install respect its configuration options, as this was causing some problems with setup.py install.

Added an unpack_directory() driver to setuptools.archive_util, so that you can process a directory tree through a processing filter as if it were a zipfile or tarfile.

Added an internal install_egg_info command to use as part of old-style install operations, that installs an .egg-info directory with the package.

Added a --single-version-externally-managed option to the install command so that you can more easily wrap a "flat" egg in a system package.

Enhanced bdist_rpm so that it installs single-version eggs that don't rely on a .pth file. The --no-egg option has been removed, since all RPMs are now built in a more backwards-compatible format.

Support full roundtrip translation of eggs to and from bdist_wininst format. Running bdist_wininst on a setuptools-based package wraps the egg in an .exe that will safely install it as an egg (i.e., with metadata and entry-point wrapper scripts), and easy_install can turn the .exe back into an .egg file or directory and install it as such.

0.6a8

Fixed some problems building extensions when Pyrex was installed, especially with Python 2.4 and/or packages using SWIG.

Made develop command accept all the same options as easy_install, and use the easy_install command's configuration settings as defaults.

Made egg_info --tag-svn-revision fall back to extracting the revision number from PKG-INFO in case it is being run on a source distribution of a snapshot taken from a Subversion-based project.

Automatically detect .dll, .so and .dylib files that are being installed as data, adding them to native_libs.txt automatically.

Fixed some problems with fresh checkouts of projects that don't include .egg-info/PKG-INFO under revision control and put the project's source code directly in the project directory. If such a package had any requirements that get processed before the egg_info command can be run, the setup scripts would fail with a "Missing 'Version:' header and/or PKG-INFO file" error, because the egg runtime interpreted the unbuilt metadata in a directory on sys.path (i.e. the current directory) as being a corrupted egg. Setuptools now monkeypatches the distribution metadata cache to pretend that the egg has valid version information, until it has a chance to make it actually be so (via the egg_info command).

0.6a5

Fixed missing gui/cli .exe files in distribution. Fixed bugs in tests.

0.6a3

Added gui_scripts entry point group to allow installing GUI scripts on Windows and other platforms. (The special handling is only for Windows; other platforms are treated the same as for console_scripts.)

0.6a2

Added console_scripts entry point group to allow installing scripts without the need to create separate script files. On Windows, console scripts get an .exe wrapper so you can just type their name. On other platforms, the scripts are written without a file extension.

0.6a1

Added support for building "old-style" RPMs that don't install an egg for the target package, using a --no-egg option.

The build_ext command now works better when using the --inplace option and multiple Python versions. It now makes sure that all extensions match the current Python version, even if newer copies were built for a different Python version.

The upload command no longer attaches an extra .zip when uploading eggs, as PyPI now supports egg uploads without trickery.

The ez_setup script/module now displays a warning before downloading the setuptools egg, and attempts to check the downloaded egg against an internal MD5 checksum table.

Fixed the --tag-svn-revision option of egg_info not finding the latest revision number; it was using the revision number of the directory containing setup.py, not the highest revision number in the project.

Added eager_resources setup argument

The sdist command now recognizes Subversion "deleted file" entries and does not include them in source distributions.

setuptools now embeds itself more thoroughly into the distutils, so that other distutils extensions (e.g. py2exe, py2app) will subclass setuptools' versions of things, rather than the native distutils ones.

Added entry_points and setup_requires arguments to setup(); setup_requires allows you to automatically find and download packages that are needed in order to build your project (as opposed to running it).

setuptools now finds its commands, setup() argument validators, and metadata writers using entry points, so that they can be extended by third-party packages. See Creating distutils Extensions for more details.

The vestigial depends command has been removed. It was never finished or documented, and never would have worked without EasyInstall - which it pre-dated and was never compatible with.

0.5a12

The zip-safety scanner now checks for modules that might be used with python -m, and marks them as unsafe for zipping, since Python 2.4 can't handle -m on zipped modules.

0.5a11

Fix breakage of the "develop" command that was caused by the addition of --always-unzip to the easy_install command.

0.5a9

Include svn:externals directories in source distributions as well as normal subversion-controlled files and directories.

Added exclude=patternlist option to setuptools.find_packages()

Changed --tag-svn-revision to include an "r" in front of the revision number for better readability.

Added ability to build eggs without including source files (except for any scripts, of course), using the --exclude-source-files option to bdist_egg.

setup.py install now automatically detects when an "unmanaged" package or module is going to be on sys.path ahead of a package being installed, thereby preventing the newer version from being imported. If this occurs, a warning message is output to sys.stderr, but installation proceeds anyway. The warning message informs the user what files or directories need deleting, and advises them they can also use EasyInstall (with the --delete-conflicting option) to do it automatically.

The egg_info command now adds a top_level.txt file to the metadata directory that lists all top-level modules and packages in the distribution. This is used by the easy_install command to find possibly-conflicting "unmanaged" packages when installing the distribution.

Added zip_safe and namespace_packages arguments to setup(). Added package analysis to determine zip-safety if the zip_safe flag is not given, and advise the author regarding what code might need changing.

Fixed the swapped -d and -b options of bdist_egg.

0.5a8

The "egg_info" command now always sets the distribution metadata to "safe" forms of the distribution name and version, so that distribution files will be generated with parseable names (i.e., ones that don't include '-' in the name or version). Also, this means that if you use the various --tag options of "egg_info", any distributions generated will use the tags in the version, not just egg distributions.

Added support for defining command aliases in distutils configuration files, under the "[aliases]" section. To prevent recursion and to allow aliases to call the command of the same name, a given alias can be expanded only once per command-line invocation. You can define new aliases with the "alias" command, either for the local, global, or per-user configuration.

Added "rotate" command to delete old distribution files, given a set of patterns to match and the number of files to keep. (Keeps the most recently-modified distribution files matching each pattern.)

Added "saveopts" command that saves all command-line options for the current invocation to the local, global, or per-user configuration file. Useful for setting defaults without having to hand-edit a configuration file.

Added a "setopt" command that sets a single option in a specified distutils configuration file.

0.5a7

Added "upload" support for egg and source distributions, including a bug fix for "upload" and a temporary workaround for lack of .egg support in PyPI.

0.5a6

Beefed up the "sdist" command so that if you don't have a MANIFEST.in, it will include all files under revision control (CVS or Subversion) in the current directory, and it will regenerate the list every time you create a source distribution, not just when you tell it to. This should make the default "do what you mean" more often than the distutils' default behavior did, while still retaining the old behavior in the presence of MANIFEST.in.

Fixed the "develop" command always updating .pth files, even if you specified -n or --dry-run.

Slightly changed the format of the generated version when you use --tag-build on the "egg_info" command, so that you can make tagged revisions compare lower than the version specified in setup.py (e.g. by using --tag-build=dev).

0.5a5

Added develop command to setuptools-based packages. This command installs an .egg-link pointing to the package's source directory, and script wrappers that execfile() the source versions of the package's scripts. This lets you put your development checkout(s) on sys.path without having to actually install them. (To uninstall the link, use use setup.py develop --uninstall.)

Added egg_info command to setuptools-based packages. This command just creates or updates the "projectname.egg-info" directory, without building an egg. (It's used by the bdist_egg, test, and develop commands.)

Enhanced the test command so that it doesn't install the package, but instead builds any C extensions in-place, updates the .egg-info metadata, adds the source directory to sys.path, and runs the tests directly on the source. This avoids an "unmanaged" installation of the package to site-packages or elsewhere.

Made easy_install a standard setuptools command, moving it from the easy_install module to setuptools.command.easy_install. Note that if you were importing or extending it, you must now change your imports accordingly. easy_install.py is still installed as a script, but not as a module.

0.5a4

Setup scripts using setuptools can now list their dependencies directly in the setup.py file, without having to manually create a depends.txt file. The install_requires and extras_require arguments to setup() are used to create a dependencies file automatically. If you are manually creating depends.txt right now, please switch to using these setup arguments as soon as practical, because depends.txt support will be removed in the 0.6 release cycle. For documentation on the new arguments, see the setuptools.dist.Distribution class.

Setup scripts using setuptools now always install using easy_install internally, for ease of uninstallation and upgrading.

0.5a1

Added support for "self-installation" bootstrapping. Packages can now include ez_setup.py in their source distribution, and add the following to their setup.py, in order to automatically bootstrap installation of setuptools as part of their setup process:
from ez_setup import use_setuptools
use_setuptools()

from setuptools import setup
# etc...

0.4a2

Added ez_setup.py installer/bootstrap script to make initial setuptools installation easier, and to allow distributions using setuptools to avoid having to include setuptools in their source distribution.

All downloads are now managed by the PackageIndex class (which is now subclassable and replaceable), so that embedders can more easily override download logic, give download progress reports, etc. The class has also been moved to the new setuptools.package_index module.

The Installer class no longer handles downloading, manages a temporary directory, or tracks the zip_ok option. Downloading is now handled by PackageIndex, and Installer has become an easy_install command class based on setuptools.Command.

There is a new setuptools.sandbox.run_setup() API to invoke a setup script in a directory sandbox, and a new setuptools.archive_util module with an unpack_archive() API. These were split out of EasyInstall to allow reuse by other tools and applications.

setuptools.Command now supports reinitializing commands using keyword arguments to set/reset options. Also, Command subclasses can now set their command_consumes_arguments attribute to True in order to receive an args option containing the rest of the command line.

0.3a2

Added new options to bdist_egg to allow tagging the egg's version number with a subversion revision number, the current date, or an explicit tag value. Run setup.py bdist_egg --help to get more information.

Misc. bug fixes

0.3a1

Initial release.