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============ Easy Install ============ Easy Install is a python module (``easy_install``) bundled with ``setuptools`` that lets you automatically download, build, install, and manage Python packages. Please share your experiences with us! If you encounter difficulty installing a package, please contact us via the `distutils mailing list <http://mail.python.org/pipermail/distutils-sig/>`_. (Note: please DO NOT send private email directly to the author of setuptools; it will be discarded. The mailing list is a searchable archive of previously-asked and answered questions; you should begin your research there before reporting something as a bug -- and then do so via list discussion first.) (Also, if you'd like to learn about how you can use ``setuptools`` to make your own packages work better with EasyInstall, or provide EasyInstall-like features without requiring your users to use EasyInstall directly, you'll probably want to check out the full `setuptools`_ documentation as well.) .. contents:: **Table of Contents** Using "Easy Install" ==================== .. _installation instructions: Installing "Easy Install" ------------------------- Please see the `setuptools PyPI page <https://pypi.python.org/pypi/setuptools>`_ for download links and basic installation instructions for each of the supported platforms. You will need at least Python 2.3.5, or if you are on a 64-bit platform, Python 2.4. An ``easy_install`` script will be installed in the normal location for Python scripts on your platform. Note that the instructions on the setuptools PyPI page assume that you are are installling to Python's primary ``site-packages`` directory. If this is not the case, you should consult the section below on `Custom Installation Locations`_ before installing. (And, on Windows, you should not use the ``.exe`` installer when installing to an alternate location.) Note that ``easy_install`` normally works by downloading files from the internet. If you are behind an NTLM-based firewall that prevents Python programs from accessing the net directly, you may wish to first install and use the `APS proxy server <http://ntlmaps.sf.net/>`_, which lets you get past such firewalls in the same way that your web browser(s) do. (Alternately, if you do not wish easy_install to actually download anything, you can restrict it from doing so with the ``--allow-hosts`` option; see the sections on `restricting downloads with --allow-hosts`_ and `command-line options`_ for more details.) Troubleshooting ~~~~~~~~~~~~~~~ If EasyInstall/setuptools appears to install correctly, and you can run the ``easy_install`` command but it fails with an ``ImportError``, the most likely cause is that you installed to a location other than ``site-packages``, without taking any of the steps described in the `Custom Installation Locations`_ section below. Please see that section and follow the steps to make sure that your custom location will work correctly. Then re-install. Similarly, if you can run ``easy_install``, and it appears to be installing packages, but then you can't import them, the most likely issue is that you installed EasyInstall correctly but are using it to install packages to a non-standard location that hasn't been properly prepared. Again, see the section on `Custom Installation Locations`_ for more details. Windows Notes ~~~~~~~~~~~~~ On Windows, an ``easy_install.exe`` launcher will also be installed, so that you can just type ``easy_install`` as long as it's on your ``PATH``. If typing ``easy_install`` at the command prompt doesn't work, check to make sure your ``PATH`` includes the appropriate ``C:\\Python2X\\Scripts`` directory. On most current versions of Windows, you can change the ``PATH`` by right-clicking "My Computer", choosing "Properties" and selecting the "Advanced" tab, then clicking the "Environment Variables" button. ``PATH`` will be in the "System Variables" section, and you will need to exit and restart your command shell (command.com, cmd.exe, bash, or other) for the change to take effect. Be sure to add a ``;`` after the last item on ``PATH`` before adding the scripts directory to it. Note that instead of changing your ``PATH`` to include the Python scripts directory, you can also retarget the installation location for scripts so they go on a directory that's already on the ``PATH``. For more information see the sections below on `Command-Line Options`_ and `Configuration Files`_. You can pass command line options (such as ``--script-dir``) to ``ez_setup.py`` to control where ``easy_install.exe`` will be installed. Downloading and Installing a Package ------------------------------------ For basic use of ``easy_install``, you need only supply the filename or URL of a source distribution or .egg file (`Python Egg`__). __ http://peak.telecommunity.com/DevCenter/PythonEggs **Example 1**. Install a package by name, searching PyPI for the latest version, and automatically downloading, building, and installing it:: easy_install SQLObject **Example 2**. Install or upgrade a package by name and version by finding links on a given "download page":: easy_install -f http://pythonpaste.org/package_index.html SQLObject **Example 3**. Download a source distribution from a specified URL, automatically building and installing it:: easy_install http://example.com/path/to/MyPackage-1.2.3.tgz **Example 4**. Install an already-downloaded .egg file:: easy_install /my_downloads/OtherPackage-3.2.1-py2.3.egg **Example 5**. Upgrade an already-installed package to the latest version listed on PyPI:: easy_install --upgrade PyProtocols **Example 6**. Install a source distribution that's already downloaded and extracted in the current directory (New in 0.5a9):: easy_install . **Example 7**. (New in 0.6a1) Find a source distribution or Subversion checkout URL for a package, and extract it or check it out to ``~/projects/sqlobject`` (the name will always be in all-lowercase), where it can be examined or edited. (The package will not be installed, but it can easily be installed with ``easy_install ~/projects/sqlobject``. See `Editing and Viewing Source Packages`_ below for more info.):: easy_install --editable --build-directory ~/projects SQLObject **Example 7**. (New in 0.6.11) Install a distribution within your home dir:: easy_install --user SQLAlchemy Easy Install accepts URLs, filenames, PyPI package names (i.e., ``distutils`` "distribution" names), and package+version specifiers. In each case, it will attempt to locate the latest available version that meets your criteria. When downloading or processing downloaded files, Easy Install recognizes distutils source distribution files with extensions of .tgz, .tar, .tar.gz, .tar.bz2, or .zip. And of course it handles already-built .egg distributions as well as ``.win32.exe`` installers built using distutils. By default, packages are installed to the running Python installation's ``site-packages`` directory, unless you provide the ``-d`` or ``--install-dir`` option to specify an alternative directory, or specify an alternate location using distutils configuration files. (See `Configuration Files`_, below.) By default, any scripts included with the package are installed to the running Python installation's standard script installation location. However, if you specify an installation directory via the command line or a config file, then the default directory for installing scripts will be the same as the package installation directory, to ensure that the script will have access to the installed package. You can override this using the ``-s`` or ``--script-dir`` option. Installed packages are added to an ``easy-install.pth`` file in the install directory, so that Python will always use the most-recently-installed version of the package. If you would like to be able to select which version to use at runtime, you should use the ``-m`` or ``--multi-version`` option. Upgrading a Package ------------------- You don't need to do anything special to upgrade a package: just install the new version, either by requesting a specific version, e.g.:: easy_install "SomePackage==2.0" a version greater than the one you have now:: easy_install "SomePackage>2.0" using the upgrade flag, to find the latest available version on PyPI:: easy_install --upgrade SomePackage or by using a download page, direct download URL, or package filename:: easy_install -f http://example.com/downloads ExamplePackage easy_install http://example.com/downloads/ExamplePackage-2.0-py2.4.egg easy_install my_downloads/ExamplePackage-2.0.tgz If you're using ``-m`` or ``--multi-version`` , using the ``require()`` function at runtime automatically selects the newest installed version of a package that meets your version criteria. So, installing a newer version is the only step needed to upgrade such packages. If you're installing to a directory on PYTHONPATH, or a configured "site" directory (and not using ``-m``), installing a package automatically replaces any previous version in the ``easy-install.pth`` file, so that Python will import the most-recently installed version by default. So, again, installing the newer version is the only upgrade step needed. If you haven't suppressed script installation (using ``--exclude-scripts`` or ``-x``), then the upgraded version's scripts will be installed, and they will be automatically patched to ``require()`` the corresponding version of the package, so that you can use them even if they are installed in multi-version mode. ``easy_install`` never actually deletes packages (unless you're installing a package with the same name and version number as an existing package), so if you want to get rid of older versions of a package, please see `Uninstalling Packages`_, below. Changing the Active Version --------------------------- If you've upgraded a package, but need to revert to a previously-installed version, you can do so like this:: easy_install PackageName==1.2.3 Where ``1.2.3`` is replaced by the exact version number you wish to switch to. If a package matching the requested name and version is not already installed in a directory on ``sys.path``, it will be located via PyPI and installed. If you'd like to switch to the latest installed version of ``PackageName``, you can do so like this:: easy_install PackageName This will activate the latest installed version. (Note: if you have set any ``find_links`` via distutils configuration files, those download pages will be checked for the latest available version of the package, and it will be downloaded and installed if it is newer than your current version.) Note that changing the active version of a package will install the newly active version's scripts, unless the ``--exclude-scripts`` or ``-x`` option is specified. Uninstalling Packages --------------------- If you have replaced a package with another version, then you can just delete the package(s) you don't need by deleting the PackageName-versioninfo.egg file or directory (found in the installation directory). If you want to delete the currently installed version of a package (or all versions of a package), you should first run:: easy_install -m PackageName This will ensure that Python doesn't continue to search for a package you're planning to remove. After you've done this, you can safely delete the .egg files or directories, along with any scripts you wish to remove. Managing Scripts ---------------- Whenever you install, upgrade, or change versions of a package, EasyInstall automatically installs the scripts for the selected package version, unless you tell it not to with ``-x`` or ``--exclude-scripts``. If any scripts in the script directory have the same name, they are overwritten. Thus, you do not normally need to manually delete scripts for older versions of a package, unless the newer version of the package does not include a script of the same name. However, if you are completely uninstalling a package, you may wish to manually delete its scripts. EasyInstall's default behavior means that you can normally only run scripts from one version of a package at a time. If you want to keep multiple versions of a script available, however, you can simply use the ``--multi-version`` or ``-m`` option, and rename the scripts that EasyInstall creates. This works because EasyInstall installs scripts as short code stubs that ``require()`` the matching version of the package the script came from, so renaming the script has no effect on what it executes. For example, suppose you want to use two versions of the ``rst2html`` tool provided by the `docutils <http://docutils.sf.net/>`_ package. You might first install one version:: easy_install -m docutils==0.3.9 then rename the ``rst2html.py`` to ``r2h_039``, and install another version:: easy_install -m docutils==0.3.10 This will create another ``rst2html.py`` script, this one using docutils version 0.3.10 instead of 0.3.9. You now have two scripts, each using a different version of the package. (Notice that we used ``-m`` for both installations, so that Python won't lock us out of using anything but the most recently-installed version of the package.) Tips & Techniques ----------------- Multiple Python Versions ~~~~~~~~~~~~~~~~~~~~~~~~ As of version 0.6a11, EasyInstall installs itself under two names: ``easy_install`` and ``easy_install-N.N``, where ``N.N`` is the Python version used to install it. Thus, if you install EasyInstall for both Python 2.3 and 2.4, you can use the ``easy_install-2.3`` or ``easy_install-2.4`` scripts to install packages for Python 2.3 or 2.4, respectively. Also, if you're working with Python version 2.4 or higher, you can run Python with ``-m easy_install`` to run that particular Python version's ``easy_install`` command. Restricting Downloads with ``--allow-hosts`` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ You can use the ``--allow-hosts`` (``-H``) option to restrict what domains EasyInstall will look for links and downloads on. ``--allow-hosts=None`` prevents downloading altogether. You can also use wildcards, for example to restrict downloading to hosts in your own intranet. See the section below on `Command-Line Options`_ for more details on the ``--allow-hosts`` option. By default, there are no host restrictions in effect, but you can change this default by editing the appropriate `configuration files`_ and adding: .. code-block:: ini [easy_install] allow_hosts = *.myintranet.example.com,*.python.org The above example would then allow downloads only from hosts in the ``python.org`` and ``myintranet.example.com`` domains, unless overridden on the command line. Installing on Un-networked Machines ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Just copy the eggs or source packages you need to a directory on the target machine, then use the ``-f`` or ``--find-links`` option to specify that directory's location. For example:: easy_install -H None -f somedir SomePackage will attempt to install SomePackage using only eggs and source packages found in ``somedir`` and disallowing all remote access. You should of course make sure you have all of SomePackage's dependencies available in somedir. If you have another machine of the same operating system and library versions (or if the packages aren't platform-specific), you can create the directory of eggs using a command like this:: easy_install -zmaxd somedir SomePackage This will tell EasyInstall to put zipped eggs or source packages for SomePackage and all its dependencies into ``somedir``, without creating any scripts or .pth files. You can then copy the contents of ``somedir`` to the target machine. (``-z`` means zipped eggs, ``-m`` means multi-version, which prevents .pth files from being used, ``-a`` means to copy all the eggs needed, even if they're installed elsewhere on the machine, and ``-d`` indicates the directory to place the eggs in.) You can also build the eggs from local development packages that were installed with the ``setup.py develop`` command, by including the ``-l`` option, e.g.:: easy_install -zmaxld somedir SomePackage This will use locally-available source distributions to build the eggs. Packaging Others' Projects As Eggs ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Need to distribute a package that isn't published in egg form? You can use EasyInstall to build eggs for a project. You'll want to use the ``--zip-ok``, ``--exclude-scripts``, and possibly ``--no-deps`` options (``-z``, ``-x`` and ``-N``, respectively). Use ``-d`` or ``--install-dir`` to specify the location where you'd like the eggs placed. By placing them in a directory that is published to the web, you can then make the eggs available for download, either in an intranet or to the internet at large. If someone distributes a package in the form of a single ``.py`` file, you can wrap it in an egg by tacking an ``#egg=name-version`` suffix on the file's URL. So, something like this:: easy_install -f "http://some.example.com/downloads/foo.py#egg=foo-1.0" foo will install the package as an egg, and this:: easy_install -zmaxd. \ -f "http://some.example.com/downloads/foo.py#egg=foo-1.0" foo will create a ``.egg`` file in the current directory. Creating your own Package Index ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In addition to local directories and the Python Package Index, EasyInstall can find download links on most any web page whose URL is given to the ``-f`` (``--find-links``) option. In the simplest case, you can simply have a web page with links to eggs or Python source packages, even an automatically generated directory listing (such as the Apache web server provides). If you are setting up an intranet site for package downloads, you may want to configure the target machines to use your download site by default, adding something like this to their `configuration files`_: .. code-block:: ini [easy_install] find_links = http://mypackages.example.com/somedir/ http://turbogears.org/download/ http://peak.telecommunity.com/dist/ As you can see, you can list multiple URLs separated by whitespace, continuing on multiple lines if necessary (as long as the subsequent lines are indented. If you are more ambitious, you can also create an entirely custom package index or PyPI mirror. See the ``--index-url`` option under `Command-Line Options`_, below, and also the section on `Package Index "API"`_. Password-Protected Sites ------------------------ If a site you want to download from is password-protected using HTTP "Basic" authentication, you can specify your credentials in the URL, like so:: http://some_userid:some_password@some.example.com/some_path/ You can do this with both index page URLs and direct download URLs. As long as any HTML pages read by easy_install use *relative* links to point to the downloads, the same user ID and password will be used to do the downloading. Controlling Build Options ~~~~~~~~~~~~~~~~~~~~~~~~~ EasyInstall respects standard distutils `Configuration Files`_, so you can use them to configure build options for packages that it installs from source. For example, if you are on Windows using the MinGW compiler, you can configure the default compiler by putting something like this: .. code-block:: ini [build] compiler = mingw32 into the appropriate distutils configuration file. In fact, since this is just normal distutils configuration, it will affect any builds using that config file, not just ones done by EasyInstall. For example, if you add those lines to ``distutils.cfg`` in the ``distutils`` package directory, it will be the default compiler for *all* packages you build. See `Configuration Files`_ below for a list of the standard configuration file locations, and links to more documentation on using distutils configuration files. Editing and Viewing Source Packages ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Sometimes a package's source distribution contains additional documentation, examples, configuration files, etc., that are not part of its actual code. If you want to be able to examine these files, you can use the ``--editable`` option to EasyInstall, and EasyInstall will look for a source distribution or Subversion URL for the package, then download and extract it or check it out as a subdirectory of the ``--build-directory`` you specify. If you then wish to install the package after editing or configuring it, you can do so by rerunning EasyInstall with that directory as the target. Note that using ``--editable`` stops EasyInstall from actually building or installing the package; it just finds, obtains, and possibly unpacks it for you. This allows you to make changes to the package if necessary, and to either install it in development mode using ``setup.py develop`` (if the package uses setuptools, that is), or by running ``easy_install projectdir`` (where ``projectdir`` is the subdirectory EasyInstall created for the downloaded package. In order to use ``--editable`` (``-e`` for short), you *must* also supply a ``--build-directory`` (``-b`` for short). The project will be placed in a subdirectory of the build directory. The subdirectory will have the same name as the project itself, but in all-lowercase. If a file or directory of that name already exists, EasyInstall will print an error message and exit. Also, when using ``--editable``, you cannot use URLs or filenames as arguments. You *must* specify project names (and optional version requirements) so that EasyInstall knows what directory name(s) to create. If you need to force EasyInstall to use a particular URL or filename, you should specify it as a ``--find-links`` item (``-f`` for short), and then also specify the project name, e.g.:: easy_install -eb ~/projects \ -fhttp://prdownloads.sourceforge.net/ctypes/ctypes-0.9.6.tar.gz?download \ ctypes==0.9.6 Dealing with Installation Conflicts ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (NOTE: As of 0.6a11, this section is obsolete; it is retained here only so that people using older versions of EasyInstall can consult it. As of version 0.6a11, installation conflicts are handled automatically without deleting the old or system-installed packages, and without ignoring the issue. Instead, eggs are automatically shifted to the front of ``sys.path`` using special code added to the ``easy-install.pth`` file. So, if you are using version 0.6a11 or better of setuptools, you do not need to worry about conflicts, and the following issues do not apply to you.) EasyInstall installs distributions in a "managed" way, such that each distribution can be independently activated or deactivated on ``sys.path``. However, packages that were not installed by EasyInstall are "unmanaged", in that they usually live all in one directory and cannot be independently activated or deactivated. As a result, if you are using EasyInstall to upgrade an existing package, or to install a package with the same name as an existing package, EasyInstall will warn you of the conflict. (This is an improvement over ``setup.py install``, becuase the ``distutils`` just install new packages on top of old ones, possibly combining two unrelated packages or leaving behind modules that have been deleted in the newer version of the package.) By default, EasyInstall will stop the installation if it detects a conflict between an existing, "unmanaged" package, and a module or package in any of the distributions you're installing. It will display a list of all of the existing files and directories that would need to be deleted for the new package to be able to function correctly. You can then either delete these conflicting files and directories yourself and re-run EasyInstall, or you can just use the ``--delete-conflicting`` or ``--ignore-conflicts-at-my-risk`` options, as described under `Command-Line Options`_, below. Of course, once you've replaced all of your existing "unmanaged" packages with versions managed by EasyInstall, you won't have any more conflicts to worry about! Compressed Installation ~~~~~~~~~~~~~~~~~~~~~~~ EasyInstall tries to install packages in zipped form, if it can. Zipping packages can improve Python's overall import performance if you're not using the ``--multi-version`` option, because Python processes zipfile entries on ``sys.path`` much faster than it does directories. As of version 0.5a9, EasyInstall analyzes packages to determine whether they can be safely installed as a zipfile, and then acts on its analysis. (Previous versions would not install a package as a zipfile unless you used the ``--zip-ok`` option.) The current analysis approach is fairly conservative; it currenly looks for: * Any use of the ``__file__`` or ``__path__`` variables (which should be replaced with ``pkg_resources`` API calls) * Possible use of ``inspect`` functions that expect to manipulate source files (e.g. ``inspect.getsource()``) * Top-level modules that might be scripts used with ``python -m`` (Python 2.4) If any of the above are found in the package being installed, EasyInstall will assume that the package cannot be safely run from a zipfile, and unzip it to a directory instead. You can override this analysis with the ``-zip-ok`` flag, which will tell EasyInstall to install the package as a zipfile anyway. Or, you can use the ``--always-unzip`` flag, in which case EasyInstall will always unzip, even if its analysis says the package is safe to run as a zipfile. Normally, however, it is simplest to let EasyInstall handle the determination of whether to zip or unzip, and only specify overrides when needed to work around a problem. If you find you need to override EasyInstall's guesses, you may want to contact the package author and the EasyInstall maintainers, so that they can make appropriate changes in future versions. (Note: If a package uses ``setuptools`` in its setup script, the package author has the option to declare the package safe or unsafe for zipped usage via the ``zip_safe`` argument to ``setup()``. If the package author makes such a declaration, EasyInstall believes the package's author and does not perform its own analysis. However, your command-line option, if any, will still override the package author's choice.) Reference Manual ================ Configuration Files ------------------- (New in 0.4a2) You may specify default options for EasyInstall using the standard distutils configuration files, under the command heading ``easy_install``. EasyInstall will look first for a ``setup.cfg`` file in the current directory, then a ``~/.pydistutils.cfg`` or ``$HOME\\pydistutils.cfg`` (on Unix-like OSes and Windows, respectively), and finally a ``distutils.cfg`` file in the ``distutils`` package directory. Here's a simple example: .. code-block:: ini [easy_install] # set the default location to install packages install_dir = /home/me/lib/python # Notice that indentation can be used to continue an option # value; this is especially useful for the "--find-links" # option, which tells easy_install to use download links on # these pages before consulting PyPI: # find_links = http://sqlobject.org/ http://peak.telecommunity.com/dist/ In addition to accepting configuration for its own options under ``[easy_install]``, EasyInstall also respects defaults specified for other distutils commands. For example, if you don't set an ``install_dir`` for ``[easy_install]``, but *have* set an ``install_lib`` for the ``[install]`` command, this will become EasyInstall's default installation directory. Thus, if you are already using distutils configuration files to set default install locations, build options, etc., EasyInstall will respect your existing settings until and unless you override them explicitly in an ``[easy_install]`` section. For more information, see also the current Python documentation on the `use and location of distutils configuration files <http://docs.python.org/inst/config-syntax.html>`_. Notice that ``easy_install`` will use the ``setup.cfg`` from the current working directory only if it was triggered from ``setup.py`` through the ``install_requires`` option. The standalone command will not use that file. Command-Line Options -------------------- ``--zip-ok, -z`` Install all packages as zip files, even if they are marked as unsafe for running as a zipfile. This can be useful when EasyInstall's analysis of a non-setuptools package is too conservative, but keep in mind that the package may not work correctly. (Changed in 0.5a9; previously this option was required in order for zipped installation to happen at all.) ``--always-unzip, -Z`` Don't install any packages as zip files, even if the packages are marked as safe for running as a zipfile. This can be useful if a package does something unsafe, but not in a way that EasyInstall can easily detect. EasyInstall's default analysis is currently very conservative, however, so you should only use this option if you've had problems with a particular package, and *after* reporting the problem to the package's maintainer and to the EasyInstall maintainers. (Note: the ``-z/-Z`` options only affect the installation of newly-built or downloaded packages that are not already installed in the target directory; if you want to convert an existing installed version from zipped to unzipped or vice versa, you'll need to delete the existing version first, and re-run EasyInstall.) ``--multi-version, -m`` "Multi-version" mode. Specifying this option prevents ``easy_install`` from adding an ``easy-install.pth`` entry for the package being installed, and if an entry for any version the package already exists, it will be removed upon successful installation. In multi-version mode, no specific version of the package is available for importing, unless you use ``pkg_resources.require()`` to put it on ``sys.path``. This can be as simple as:: from pkg_resources import require require("SomePackage", "OtherPackage", "MyPackage") which will put the latest installed version of the specified packages on ``sys.path`` for you. (For more advanced uses, like selecting specific versions and enabling optional dependencies, see the ``pkg_resources`` API doc.) Changed in 0.6a10: this option is no longer silently enabled when installing to a non-PYTHONPATH, non-"site" directory. You must always explicitly use this option if you want it to be active. ``--upgrade, -U`` (New in 0.5a4) By default, EasyInstall only searches online if a project/version requirement can't be met by distributions already installed on sys.path or the installation directory. However, if you supply the ``--upgrade`` or ``-U`` flag, EasyInstall will always check the package index and ``--find-links`` URLs before selecting a version to install. In this way, you can force EasyInstall to use the latest available version of any package it installs (subject to any version requirements that might exclude such later versions). ``--install-dir=DIR, -d DIR`` Set the installation directory. It is up to you to ensure that this directory is on ``sys.path`` at runtime, and to use ``pkg_resources.require()`` to enable the installed package(s) that you need. (New in 0.4a2) If this option is not directly specified on the command line or in a distutils configuration file, the distutils default installation location is used. Normally, this would be the ``site-packages`` directory, but if you are using distutils configuration files, setting things like ``prefix`` or ``install_lib``, then those settings are taken into account when computing the default installation directory, as is the ``--prefix`` option. ``--script-dir=DIR, -s DIR`` Set the script installation directory. If you don't supply this option (via the command line or a configuration file), but you *have* supplied an ``--install-dir`` (via command line or config file), then this option defaults to the same directory, so that the scripts will be able to find their associated package installation. Otherwise, this setting defaults to the location where the distutils would normally install scripts, taking any distutils configuration file settings into account. ``--exclude-scripts, -x`` Don't install scripts. This is useful if you need to install multiple versions of a package, but do not want to reset the version that will be run by scripts that are already installed. ``--user`` (New in 0.6.11) Use the the user-site-packages as specified in :pep:`370` instead of the global site-packages. ``--always-copy, -a`` (New in 0.5a4) Copy all needed distributions to the installation directory, even if they are already present in a directory on sys.path. In older versions of EasyInstall, this was the default behavior, but now you must explicitly request it. By default, EasyInstall will no longer copy such distributions from other sys.path directories to the installation directory, unless you explicitly gave the distribution's filename on the command line. Note that as of 0.6a10, using this option excludes "system" and "development" eggs from consideration because they can't be reliably copied. This may cause EasyInstall to choose an older version of a package than what you expected, or it may cause downloading and installation of a fresh copy of something that's already installed. You will see warning messages for any eggs that EasyInstall skips, before it falls back to an older version or attempts to download a fresh copy. ``--find-links=URLS_OR_FILENAMES, -f URLS_OR_FILENAMES`` Scan the specified "download pages" or directories for direct links to eggs or other distributions. Any existing file or directory names or direct download URLs are immediately added to EasyInstall's search cache, and any indirect URLs (ones that don't point to eggs or other recognized archive formats) are added to a list of additional places to search for download links. As soon as EasyInstall has to go online to find a package (either because it doesn't exist locally, or because ``--upgrade`` or ``-U`` was used), the specified URLs will be downloaded and scanned for additional direct links. Eggs and archives found by way of ``--find-links`` are only downloaded if they are needed to meet a requirement specified on the command line; links to unneeded packages are ignored. If all requested packages can be found using links on the specified download pages, the Python Package Index will not be consulted unless you also specified the ``--upgrade`` or ``-U`` option. (Note: if you want to refer to a local HTML file containing links, you must use a ``file:`` URL, as filenames that do not refer to a directory, egg, or archive are ignored.) You may specify multiple URLs or file/directory names with this option, separated by whitespace. Note that on the command line, you will probably have to surround the URL list with quotes, so that it is recognized as a single option value. You can also specify URLs in a configuration file; see `Configuration Files`_, above. Changed in 0.6a10: previously all URLs and directories passed to this option were scanned as early as possible, but from 0.6a10 on, only directories and direct archive links are scanned immediately; URLs are not retrieved unless a package search was already going to go online due to a package not being available locally, or due to the use of the ``--update`` or ``-U`` option. ``--no-find-links`` Blocks the addition of any link. This parameter is useful if you want to avoid adding links defined in a project easy_install is installing (whether it's a requested project or a dependency). When used, ``--find-links`` is ignored. Added in Distribute 0.6.11 and Setuptools 0.7. ``--delete-conflicting, -D`` (Removed in 0.6a11) (As of 0.6a11, this option is no longer necessary; please do not use it!) If you are replacing a package that was previously installed *without* using EasyInstall, the old version may end up on ``sys.path`` before the version being installed with EasyInstall. EasyInstall will normally abort the installation of a package if it detects such a conflict, and ask you to manually remove the conflicting files or directories. If you specify this option, however, EasyInstall will attempt to delete the files or directories itself, and then proceed with the installation. ``--ignore-conflicts-at-my-risk`` (Removed in 0.6a11) (As of 0.6a11, this option is no longer necessary; please do not use it!) Ignore conflicting packages and proceed with installation anyway, even though it means the package probably won't work properly. If the conflicting package is in a directory you can't write to, this may be your only option, but you will need to take more invasive measures to get the installed package to work, like manually adding it to ``PYTHONPATH`` or to ``sys.path`` at runtime. ``--index-url=URL, -i URL`` (New in 0.4a1; default changed in 0.6c7) Specifies the base URL of the Python Package Index. The default is https://pypi.python.org/simple if not specified. When a package is requested that is not locally available or linked from a ``--find-links`` download page, the package index will be searched for download pages for the needed package, and those download pages will be searched for links to download an egg or source distribution. ``--editable, -e`` (New in 0.6a1) Only find and download source distributions for the specified projects, unpacking them to subdirectories of the specified ``--build-directory``. EasyInstall will not actually build or install the requested projects or their dependencies; it will just find and extract them for you. See `Editing and Viewing Source Packages`_ above for more details. ``--build-directory=DIR, -b DIR`` (UPDATED in 0.6a1) Set the directory used to build source packages. If a package is built from a source distribution or checkout, it will be extracted to a subdirectory of the specified directory. The subdirectory will have the same name as the extracted distribution's project, but in all-lowercase. If a file or directory of that name already exists in the given directory, a warning will be printed to the console, and the build will take place in a temporary directory instead. This option is most useful in combination with the ``--editable`` option, which forces EasyInstall to *only* find and extract (but not build and install) source distributions. See `Editing and Viewing Source Packages`_, above, for more information. ``--verbose, -v, --quiet, -q`` (New in 0.4a4) Control the level of detail of EasyInstall's progress messages. The default detail level is "info", which prints information only about relatively time-consuming operations like running a setup script, unpacking an archive, or retrieving a URL. Using ``-q`` or ``--quiet`` drops the detail level to "warn", which will only display installation reports, warnings, and errors. Using ``-v`` or ``--verbose`` increases the detail level to include individual file-level operations, link analysis messages, and distutils messages from any setup scripts that get run. If you include the ``-v`` option more than once, the second and subsequent uses are passed down to any setup scripts, increasing the verbosity of their reporting as well. ``--dry-run, -n`` (New in 0.4a4) Don't actually install the package or scripts. This option is passed down to any setup scripts run, so packages should not actually build either. This does *not* skip downloading, nor does it skip extracting source distributions to a temporary/build directory. ``--optimize=LEVEL``, ``-O LEVEL`` (New in 0.4a4) If you are installing from a source distribution, and are *not* using the ``--zip-ok`` option, this option controls the optimization level for compiling installed ``.py`` files to ``.pyo`` files. It does not affect the compilation of modules contained in ``.egg`` files, only those in ``.egg`` directories. The optimization level can be set to 0, 1, or 2; the default is 0 (unless it's set under ``install`` or ``install_lib`` in one of your distutils configuration files). ``--record=FILENAME`` (New in 0.5a4) Write a record of all installed files to FILENAME. This is basically the same as the same option for the standard distutils "install" command, and is included for compatibility with tools that expect to pass this option to "setup.py install". ``--site-dirs=DIRLIST, -S DIRLIST`` (New in 0.6a1) Specify one or more custom "site" directories (separated by commas). "Site" directories are directories where ``.pth`` files are processed, such as the main Python ``site-packages`` directory. As of 0.6a10, EasyInstall automatically detects whether a given directory processes ``.pth`` files (or can be made to do so), so you should not normally need to use this option. It is is now only necessary if you want to override EasyInstall's judgment and force an installation directory to be treated as if it supported ``.pth`` files. ``--no-deps, -N`` (New in 0.6a6) Don't install any dependencies. This is intended as a convenience for tools that wrap eggs in a platform-specific packaging system. (We don't recommend that you use it for anything else.) ``--allow-hosts=PATTERNS, -H PATTERNS`` (New in 0.6a6) Restrict downloading and spidering to hosts matching the specified glob patterns. E.g. ``-H *.python.org`` restricts web access so that only packages listed and downloadable from machines in the ``python.org`` domain. The glob patterns must match the *entire* user/host/port section of the target URL(s). For example, ``*.python.org`` will NOT accept a URL like ``http://python.org/foo`` or ``http://www.python.org:8080/``. Multiple patterns can be specified by separting them with commas. The default pattern is ``*``, which matches anything. In general, this option is mainly useful for blocking EasyInstall's web access altogether (e.g. ``-Hlocalhost``), or to restrict it to an intranet or other trusted site. EasyInstall will do the best it can to satisfy dependencies given your host restrictions, but of course can fail if it can't find suitable packages. EasyInstall displays all blocked URLs, so that you can adjust your ``--allow-hosts`` setting if it is more strict than you intended. Some sites may wish to define a restrictive default setting for this option in their `configuration files`_, and then manually override the setting on the command line as needed. ``--prefix=DIR`` (New in 0.6a10) Use the specified directory as a base for computing the default installation and script directories. On Windows, the resulting default directories will be ``prefix\\Lib\\site-packages`` and ``prefix\\Scripts``, while on other platforms the defaults will be ``prefix/lib/python2.X/site-packages`` (with the appropriate version substituted) for libraries and ``prefix/bin`` for scripts. Note that the ``--prefix`` option only sets the *default* installation and script directories, and does not override the ones set on the command line or in a configuration file. ``--local-snapshots-ok, -l`` (New in 0.6c6) Normally, EasyInstall prefers to only install *released* versions of projects, not in-development ones, because such projects may not have a currently-valid version number. So, it usually only installs them when their ``setup.py`` directory is explicitly passed on the command line. However, if this option is used, then any in-development projects that were installed using the ``setup.py develop`` command, will be used to build eggs, effectively upgrading the "in-development" project to a snapshot release. Normally, this option is used only in conjunction with the ``--always-copy`` option to create a distributable snapshot of every egg needed to run an application. Note that if you use this option, you must make sure that there is a valid version number (such as an SVN revision number tag) for any in-development projects that may be used, as otherwise EasyInstall may not be able to tell what version of the project is "newer" when future installations or upgrades are attempted. .. _non-root installation: Custom Installation Locations ----------------------------- By default, EasyInstall installs python packages into Python's main ``site-packages`` directory, and manages them using a custom ``.pth`` file in that same directory. Very often though, a user or developer wants ``easy_install`` to install and manage python packages in an alternative location, usually for one of 3 reasons: 1. They don't have access to write to the main Python site-packages directory. 2. They want a user-specific stash of packages, that is not visible to other users. 3. They want to isolate a set of packages to a specific python application, usually to minimize the possibility of version conflicts. Historically, there have been many approaches to achieve custom installation. The following section lists only the easiest and most relevant approaches [1]_. `Use the "--user" option`_ `Use the "--user" option and customize "PYTHONUSERBASE"`_ `Use "virtualenv"`_ .. [1] There are older ways to achieve custom installation using various ``easy_install`` and ``setup.py install`` options, combined with ``PYTHONPATH`` and/or ``PYTHONUSERBASE`` alterations, but all of these are effectively deprecated by the User scheme brought in by `PEP-370`_ in Python 2.6. .. _PEP-370: http://www.python.org/dev/peps/pep-0370/ Use the "--user" option ~~~~~~~~~~~~~~~~~~~~~~~ With Python 2.6 came the User scheme for installation, which means that all python distributions support an alternative install location that is specific to a user [2]_ [3]_. The Default location for each OS is explained in the python documentation for the ``site.USER_BASE`` variable. This mode of installation can be turned on by specifying the ``--user`` option to ``setup.py install`` or ``easy_install``. This approach serves the need to have a user-specific stash of packages. .. [2] Prior to Python2.6, Mac OS X offered a form of the User scheme. That is now subsumed into the User scheme introduced in Python 2.6. .. [3] Prior to the User scheme, there was the Home scheme, which is still available, but requires more effort than the User scheme to get packages recognized. Use the "--user" option and customize "PYTHONUSERBASE" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The User scheme install location can be customized by setting the ``PYTHONUSERBASE`` environment variable, which updates the value of ``site.USER_BASE``. To isolate packages to a specific application, simply set the OS environment of that application to a specific value of ``PYTHONUSERBASE``, that contains just those packages. Use "virtualenv" ~~~~~~~~~~~~~~~~ "virtualenv" is a 3rd-party python package that effectively "clones" a python installation, thereby creating an isolated location to intall packages. The evolution of "virtualenv" started before the existence of the User installation scheme. "virtualenv" provides a version of ``easy_install`` that is scoped to the cloned python install and is used in the normal way. "virtualenv" does offer various features that the User installation scheme alone does not provide, e.g. the ability to hide the main python site-packages. Please refer to the `virtualenv`_ documentation for more details. .. _virtualenv: https://pypi.python.org/pypi/virtualenv Package Index "API" ------------------- Custom package indexes (and PyPI) must follow the following rules for EasyInstall to be able to look up and download packages: 1. Except where stated otherwise, "pages" are HTML or XHTML, and "links" refer to ``href`` attributes. 2. Individual project version pages' URLs must be of the form ``base/projectname/version``, where ``base`` is the package index's base URL. 3. Omitting the ``/version`` part of a project page's URL (but keeping the trailing ``/``) should result in a page that is either: a) The single active version of that project, as though the version had been explicitly included, OR b) A page with links to all of the active version pages for that project. 4. Individual project version pages should contain direct links to downloadable distributions where possible. It is explicitly permitted for a project's "long_description" to include URLs, and these should be formatted as HTML links by the package index, as EasyInstall does no special processing to identify what parts of a page are index-specific and which are part of the project's supplied description. 5. Where available, MD5 information should be added to download URLs by appending a fragment identifier of the form ``#md5=...``, where ``...`` is the 32-character hex MD5 digest. EasyInstall will verify that the downloaded file's MD5 digest matches the given value. 6. Individual project version pages should identify any "homepage" or "download" URLs using ``rel="homepage"`` and ``rel="download"`` attributes on the HTML elements linking to those URLs. Use of these attributes will cause EasyInstall to always follow the provided links, unless it can be determined by inspection that they are downloadable distributions. If the links are not to downloadable distributions, they are retrieved, and if they are HTML, they are scanned for download links. They are *not* scanned for additional "homepage" or "download" links, as these are only processed for pages that are part of a package index site. 7. The root URL of the index, if retrieved with a trailing ``/``, must result in a page containing links to *all* projects' active version pages. (Note: This requirement is a workaround for the absence of case-insensitive ``safe_name()`` matching of project names in URL paths. If project names are matched in this fashion (e.g. via the PyPI server, mod_rewrite, or a similar mechanism), then it is not necessary to include this all-packages listing page.) 8. If a package index is accessed via a ``file://`` URL, then EasyInstall will automatically use ``index.html`` files, if present, when trying to read a directory with a trailing ``/`` on the URL. Backward Compatibility ~~~~~~~~~~~~~~~~~~~~~~ Package indexes that wish to support setuptools versions prior to 0.6b4 should also follow these rules: * Homepage and download links must be preceded with ``"<th>Home Page"`` or ``"<th>Download URL"``, in addition to (or instead of) the ``rel=""`` attributes on the actual links. These marker strings do not need to be visible, or uncommented, however! For example, the following is a valid homepage link that will work with any version of setuptools:: <li> <strong>Home Page:</strong> <!-- <th>Home Page --> <a rel="homepage" href="http://sqlobject.org">http://sqlobject.org</a> </li> Even though the marker string is in an HTML comment, older versions of EasyInstall will still "see" it and know that the link that follows is the project's home page URL. * The pages described by paragraph 3(b) of the preceding section *must* contain the string ``"Index of Packages</title>"`` somewhere in their text. This can be inside of an HTML comment, if desired, and it can be anywhere in the page. (Note: this string MUST NOT appear on normal project pages, as described in paragraphs 2 and 3(a)!) In addition, for compatibility with PyPI versions that do not use ``#md5=`` fragment IDs, EasyInstall uses the following regular expression to match PyPI's displayed MD5 info (broken onto two lines for readability):: <a href="([^"#]+)">([^<]+)</a>\n\s+\(<a href="[^?]+\?:action=show_md5 &amp;digest=([0-9a-f]{32})">md5</a>\) History ======= 0.6c9 * Fixed ``win32.exe`` support for .pth files, so unnecessary directory nesting is flattened out in the resulting egg. (There was a case-sensitivity problem that affected some distributions, notably ``pywin32``.) * Prevent ``--help-commands`` and other junk from showing under Python 2.5 when running ``easy_install --help``. * Fixed GUI scripts sometimes not executing on Windows * Fixed not picking up dependency links from recursive dependencies. * Only make ``.py``, ``.dll`` and ``.so`` files executable when unpacking eggs * Changes for Jython compatibility * Improved error message when a requirement is also a directory name, but the specified directory is not a source package. * Fixed ``--allow-hosts`` option blocking ``file:`` URLs * Fixed HTTP SVN detection failing when the page title included a project name (e.g. on SourceForge-hosted SVN) * Fix Jython script installation to handle ``#!`` lines better when ``sys.executable`` is a script. * Removed use of deprecated ``md5`` module if ``hashlib`` is available * Keep site directories (e.g. ``site-packages``) from being included in ``.pth`` files. 0.6c7 * ``ftp:`` download URLs now work correctly. * The default ``--index-url`` is now ``https://pypi.python.org/simple``, to use the Python Package Index's new simpler (and faster!) REST API. 0.6c6 * EasyInstall no longer aborts the installation process if a URL it wants to retrieve can't be downloaded, unless the URL is an actual package download. Instead, it issues a warning and tries to keep going. * Fixed distutils-style scripts originally built on Windows having their line endings doubled when installed on any platform. * Added ``--local-snapshots-ok`` flag, to allow building eggs from projects installed using ``setup.py develop``. * Fixed not HTML-decoding URLs scraped from web pages 0.6c5 * Fixed ``.dll`` files on Cygwin not having executable permisions when an egg is installed unzipped. 0.6c4 * Added support for HTTP "Basic" authentication using ``http://user:pass@host`` URLs. If a password-protected page contains links to the same host (and protocol), those links will inherit the credentials used to access the original page. * Removed all special support for Sourceforge mirrors, as Sourceforge's mirror system now works well for non-browser downloads. * Fixed not recognizing ``win32.exe`` installers that included a custom bitmap. * Fixed not allowing ``os.open()`` of paths outside the sandbox, even if they are opened read-only (e.g. reading ``/dev/urandom`` for random numbers, as is done by ``os.urandom()`` on some platforms). * Fixed a problem with ``.pth`` testing on Windows when ``sys.executable`` has a space in it (e.g., the user installed Python to a ``Program Files`` directory). 0.6c3 * You can once again use "python -m easy_install" with Python 2.4 and above. * Python 2.5 compatibility fixes added. 0.6c2 * Windows script wrappers now support quoted arguments and arguments containing spaces. (Patch contributed by Jim Fulton.) * The ``ez_setup.py`` script now actually works when you put a setuptools ``.egg`` alongside it for bootstrapping an offline machine. * A writable installation directory on ``sys.path`` is no longer required to download and extract a source distribution using ``--editable``. * Generated scripts now use ``-x`` on the ``#!`` line when ``sys.executable`` contains non-ASCII characters, to prevent deprecation warnings about an unspecified encoding when the script is run. 0.6c1 * EasyInstall now includes setuptools version information in the ``User-Agent`` string sent to websites it visits. 0.6b4 * Fix creating Python wrappers for non-Python scripts * Fix ``ftp://`` directory listing URLs from causing a crash when used in the "Home page" or "Download URL" slots on PyPI. * Fix ``sys.path_importer_cache`` not being updated when an existing zipfile or directory is deleted/overwritten. * Fix not recognizing HTML 404 pages from package indexes. * Allow ``file://`` URLs to be used as a package index. URLs that refer to directories will use an internally-generated directory listing if there is no ``index.html`` file in the directory. * Allow external links in a package index to be specified using ``rel="homepage"`` or ``rel="download"``, without needing the old PyPI-specific visible markup. * Suppressed warning message about possibly-misspelled project name, if an egg or link for that project name has already been seen. 0.6b3 * Fix local ``--find-links`` eggs not being copied except with ``--always-copy``. * Fix sometimes not detecting local packages installed outside of "site" directories. * Fix mysterious errors during initial ``setuptools`` install, caused by ``ez_setup`` trying to run ``easy_install`` twice, due to a code fallthru after deleting the egg from which it's running. 0.6b2 * Don't install or update a ``site.py`` patch when installing to a ``PYTHONPATH`` directory with ``--multi-version``, unless an ``easy-install.pth`` file is already in use there. * Construct ``.pth`` file paths in such a way that installing an egg whose name begins with ``import`` doesn't cause a syntax error. * Fixed a bogus warning message that wasn't updated since the 0.5 versions. 0.6b1 * Better ambiguity management: accept ``#egg`` name/version even if processing what appears to be a correctly-named distutils file, and ignore ``.egg`` files with no ``-``, since valid Python ``.egg`` files always have a version number (but Scheme eggs often don't). * Support ``file://`` links to directories in ``--find-links``, so that easy_install can build packages from local source checkouts. * Added automatic retry for Sourceforge mirrors. The new download process is to first just try dl.sourceforge.net, then randomly select mirror IPs and remove ones that fail, until something works. The removed IPs stay removed for the remainder of the run. * Ignore bdist_dumb distributions when looking at download URLs. 0.6a11 * Process ``dependency_links.txt`` if found in a distribution, by adding the URLs to the list for scanning. * Use relative paths in ``.pth`` files when eggs are being installed to the same directory as the ``.pth`` file. This maximizes portability of the target directory when building applications that contain eggs. * Added ``easy_install-N.N`` script(s) for convenience when using multiple Python versions. * Added automatic handling of installation conflicts. Eggs are now shifted to the front of sys.path, in an order consistent with where they came from, making EasyInstall seamlessly co-operate with system package managers. The ``--delete-conflicting`` and ``--ignore-conflicts-at-my-risk`` options are now no longer necessary, and will generate warnings at the end of a run if you use them. * Don't recursively traverse subdirectories given to ``--find-links``. 0.6a10 * Added exhaustive testing of the install directory, including a spawn test for ``.pth`` file support, and directory writability/existence checks. This should virtually eliminate the need to set or configure ``--site-dirs``. * Added ``--prefix`` option for more do-what-I-mean-ishness in the absence of RTFM-ing. :) * Enhanced ``PYTHONPATH`` support so that you don't have to put any eggs on it manually to make it work. ``--multi-version`` is no longer a silent default; you must explicitly use it if installing to a non-PYTHONPATH, non-"site" directory. * Expand ``$variables`` used in the ``--site-dirs``, ``--build-directory``, ``--install-dir``, and ``--script-dir`` options, whether on the command line or in configuration files. * Improved SourceForge mirror processing to work faster and be less affected by transient HTML changes made by SourceForge. * PyPI searches now use the exact spelling of requirements specified on the command line or in a project's ``install_requires``. Previously, a normalized form of the name was used, which could lead to unnecessary full-index searches when a project's name had an underscore (``_``) in it. * EasyInstall can now download bare ``.py`` files and wrap them in an egg, as long as you include an ``#egg=name-version`` suffix on the URL, or if the ``.py`` file is listed as the "Download URL" on the project's PyPI page. This allows third parties to "package" trivial Python modules just by linking to them (e.g. from within their own PyPI page or download links page). * The ``--always-copy`` option now skips "system" and "development" eggs since they can't be reliably copied. Note that this may cause EasyInstall to choose an older version of a package than what you expected, or it may cause downloading and installation of a fresh version of what's already installed. * The ``--find-links`` option previously scanned all supplied URLs and directories as early as possible, but now only directories and direct archive links are scanned immediately. URLs are not retrieved unless a package search was already going to go online due to a package not being available locally, or due to the use of the ``--update`` or ``-U`` option. * Fixed the annoying ``--help-commands`` wart. 0.6a9 * Fixed ``.pth`` file processing picking up nested eggs (i.e. ones inside "baskets") when they weren't explicitly listed in the ``.pth`` file. * If more than one URL appears to describe the exact same distribution, prefer the shortest one. This helps to avoid "table of contents" CGI URLs like the ones on effbot.org. * Quote arguments to python.exe (including python's path) to avoid problems when Python (or a script) is installed in a directory whose name contains spaces on Windows. * 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 * Update for changed SourceForge mirror format * Fixed not installing dependencies for some packages fetched via Subversion * Fixed dependency installation with ``--always-copy`` not using the same dependency resolution procedure as other operations. * Fixed not fully removing temporary directories on Windows, if a Subversion checkout left read-only files behind * Fixed some problems building extensions when Pyrex was installed, especially with Python 2.4 and/or packages using SWIG. 0.6a7 * Fixed not being able to install Windows script wrappers using Python 2.3 0.6a6 * Added support for "traditional" PYTHONPATH-based non-root installation, and also the convenient ``virtual-python.py`` script, based on a contribution by Ian Bicking. The setuptools egg now contains a hacked ``site`` module that makes the PYTHONPATH-based approach work with .pth files, so that you can get the full EasyInstall feature set on such installations. * Added ``--no-deps`` and ``--allow-hosts`` options. * Improved Windows ``.exe`` script wrappers so that the script can have the same name as a module without confusing Python. * Changed dependency processing so that it's breadth-first, allowing a depender's preferences to override those of a dependee, to prevent conflicts when a lower version is acceptable to the dependee, but not the depender. Also, ensure that currently installed/selected packages aren't given precedence over ones desired by a package being installed, which could cause conflict errors. 0.6a3 * Improved error message when trying to use old ways of running ``easy_install``. Removed the ability to run via ``python -m`` or by running ``easy_install.py``; ``easy_install`` is the command to run on all supported platforms. * Improved wrapper script generation and runtime initialization so that a VersionConflict doesn't occur if you later install a competing version of a needed package as the default version of that package. * Fixed a problem parsing version numbers in ``#egg=`` links. 0.6a2 * EasyInstall can now install "console_scripts" defined by packages that use ``setuptools`` and define appropriate entry points. On Windows, console scripts get an ``.exe`` wrapper so you can just type their name. On other platforms, the scripts are installed without a file extension. * Using ``python -m easy_install`` or running ``easy_install.py`` is now DEPRECATED, since an ``easy_install`` wrapper is now available on all platforms. 0.6a1 * EasyInstall now does MD5 validation of downloads from PyPI, or from any link that has an "#md5=..." trailer with a 32-digit lowercase hex md5 digest. * EasyInstall now handles symlinks in target directories by removing the link, rather than attempting to overwrite the link's destination. This makes it easier to set up an alternate Python "home" directory (as described above in the `Non-Root Installation`_ section). * Added support for handling MacOS platform information in ``.egg`` filenames, based on a contribution by Kevin Dangoor. You may wish to delete and reinstall any eggs whose filename includes "darwin" and "Power_Macintosh", because the format for this platform information has changed so that minor OS X upgrades (such as 10.4.1 to 10.4.2) do not cause eggs built with a previous OS version to become obsolete. * easy_install's dependency processing algorithms have changed. When using ``--always-copy``, it now ensures that dependencies are copied too. When not using ``--always-copy``, it tries to use a single resolution loop, rather than recursing. * Fixed installing extra ``.pyc`` or ``.pyo`` files for scripts with ``.py`` extensions. * Added ``--site-dirs`` option to allow adding custom "site" directories. Made ``easy-install.pth`` work in platform-specific alternate site directories (e.g. ``~/Library/Python/2.x/site-packages`` on Mac OS X). * If you manually delete the current version of a package, the next run of EasyInstall against the target directory will now remove the stray entry from the ``easy-install.pth`` file. * EasyInstall now recognizes URLs with a ``#egg=project_name`` fragment ID as pointing to the named project's source checkout. Such URLs have a lower match precedence than any other kind of distribution, so they'll only be used if they have a higher version number than any other available distribution, or if you use the ``--editable`` option. The ``#egg`` fragment can contain a version if it's formatted as ``#egg=proj-ver``, where ``proj`` is the project name, and ``ver`` is the version number. You *must* use the format for these values that the ``bdist_egg`` command uses; i.e., all non-alphanumeric runs must be condensed to single underscore characters. * Added the ``--editable`` option; see `Editing and Viewing Source Packages`_ above for more info. Also, slightly changed the behavior of the ``--build-directory`` option. * Fixed the setup script sandbox facility not recognizing certain paths as valid on case-insensitive platforms. 0.5a12 * Fix ``python -m easy_install`` not working due to setuptools being installed as a zipfile. Update safety scanner to check for modules that might be used as ``python -m`` scripts. * Misc. fixes for win32.exe support, including changes to support Python 2.4's changed ``bdist_wininst`` format. 0.5a10 * Put the ``easy_install`` module back in as a module, as it's needed for ``python -m`` to run it! * Allow ``--find-links/-f`` to accept local directories or filenames as well as URLs. 0.5a9 * EasyInstall now automatically detects when an "unmanaged" package or module is going to be on ``sys.path`` ahead of a package you're installing, thereby preventing the newer version from being imported. By default, it will abort installation to alert you of the problem, but there are also new options (``--delete-conflicting`` and ``--ignore-conflicts-at-my-risk``) available to change the default behavior. (Note: this new feature doesn't take effect for egg files that were built with older ``setuptools`` versions, because they lack the new metadata file required to implement it.) * The ``easy_install`` distutils command now uses ``DistutilsError`` as its base error type for errors that should just issue a message to stderr and exit the program without a traceback. * EasyInstall can now be given a path to a directory containing a setup script, and it will attempt to build and install the package there. * EasyInstall now performs a safety analysis on module contents to determine whether a package is likely to run in zipped form, and displays information about what modules may be doing introspection that would break when running as a zipfile. * Added the ``--always-unzip/-Z`` option, to force unzipping of packages that would ordinarily be considered safe to unzip, and changed the meaning of ``--zip-ok/-z`` to "always leave everything zipped". 0.5a8 * There is now a separate documentation page for `setuptools`_; revision history that's not specific to EasyInstall has been moved to that page. .. _setuptools: http://peak.telecommunity.com/DevCenter/setuptools 0.5a5 * 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 * Added ``--always-copy/-a`` option to always copy needed packages to the installation directory, even if they're already present elsewhere on sys.path. (In previous versions, this was the default behavior, but now you must request it.) * Added ``--upgrade/-U`` option to force checking PyPI for latest available version(s) of all packages requested by name and version, even if a matching version is available locally. * Added automatic installation of dependencies declared by a distribution being installed. These dependencies must be listed in the distribution's ``EGG-INFO`` directory, so the distribution has to have declared its dependencies by using setuptools. If a package has requirements it didn't declare, you'll still have to deal with them yourself. (E.g., by asking EasyInstall to find and install them.) * Added the ``--record`` option to ``easy_install`` for the benefit of tools that run ``setup.py install --record=filename`` on behalf of another packaging system.) 0.5a3 * Fixed not setting script permissions to allow execution. * Improved sandboxing so that setup scripts that want a temporary directory (e.g. pychecker) can still run in the sandbox. 0.5a2 * Fix stupid stupid refactoring-at-the-last-minute typos. :( 0.5a1 * Added support for converting ``.win32.exe`` installers to eggs on the fly. EasyInstall will now recognize such files by name and install them. * Fixed a problem with picking the "best" version to install (versions were being sorted as strings, rather than as parsed values) 0.4a4 * Added support for the distutils "verbose/quiet" and "dry-run" options, as well as the "optimize" flag. * Support downloading packages that were uploaded to PyPI (by scanning all links on package pages, not just the homepage/download links). 0.4a3 * Add progress messages to the search/download process so that you can tell what URLs it's reading to find download links. (Hopefully, this will help people report out-of-date and broken links to package authors, and to tell when they've asked for a package that doesn't exist.) 0.4a2 * Added support for installing scripts * Added support for setting options via distutils configuration files, and using distutils' default options as a basis for EasyInstall's defaults. * Renamed ``--scan-url/-s`` to ``--find-links/-f`` to free up ``-s`` for the script installation directory option. * Use ``urllib2`` instead of ``urllib``, to allow use of ``https:`` URLs if Python includes SSL support. 0.4a1 * Added ``--scan-url`` and ``--index-url`` options, to scan download pages and search PyPI for needed packages. 0.3a4 * Restrict ``--build-directory=DIR/-b DIR`` option to only be used with single URL installs, to avoid running the wrong setup.py. 0.3a3 * Added ``--build-directory=DIR/-b DIR`` option. * Added "installation report" that explains how to use 'require()' when doing a multiversion install or alternate installation directory. * Added SourceForge mirror auto-select (Contributed by Ian Bicking) * Added "sandboxing" that stops a setup script from running if it attempts to write to the filesystem outside of the build area * Added more workarounds for packages with quirky ``install_data`` hacks 0.3a2 * Added subversion download support for ``svn:`` and ``svn+`` URLs, as well as automatic recognition of HTTP subversion URLs (Contributed by Ian Bicking) * Misc. bug fixes 0.3a1 * Initial release. Future Plans ============ * Additional utilities to list/remove/verify packages * Signature checking? SSL? Ability to suppress PyPI search? * Display byte progress meter when downloading distributions and long pages? * Redirect stdout/stderr to log during run_setup?