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authorPJ Eby <distutils-sig@python.org>2005-05-31 00:24:45 +0000
committerPJ Eby <distutils-sig@python.org>2005-05-31 00:24:45 +0000
commitab59623d3bdc3551cbb062c709dfa169486afeca (patch)
treefe698ceeb5db37803fa0c7f0d95b36aedfd56fe7 /easy_install.py
parent3f1a1617984199722facc72af6e217c88f4ed664 (diff)
downloadpython-setuptools-bitbucket-ab59623d3bdc3551cbb062c709dfa169486afeca.tar.gz
Ditch outdated TODO file, move docs to a new 'EasyInstall.txt' file. Fix
installation report for .egg files/directories.
Diffstat (limited to 'easy_install.py')
-rwxr-xr-xeasy_install.py173
1 files changed, 25 insertions, 148 deletions
diff --git a/easy_install.py b/easy_install.py
index 4bca9777..45590b62 100755
--- a/easy_install.py
+++ b/easy_install.py
@@ -1,165 +1,42 @@
#!python
"""\
-Easy Install
-============
-
-Easy Install is a python module (easy_install) that lets you automatically
-download, build, install, and manage Python packages.
-
-.. contents:: **Table of Contents**
-
-
-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**. Download a source distribution, automatically building and
-installing it::
-
- easy_install http://example.com/path/to/MyPackage-1.2.3.tgz
-
-**Example 2**. Install an already-downloaded .egg file::
-
- easy_install /my_downloads/OtherPackage-3.2.1-py2.3.egg
-
-Easy Install recognizes distutils *source* (not binary) distribution files with
-extensions of .tgz, .tar, .tar.gz, .tar.bz2, or .zip. And of course it handles
-already-built .egg distributions.
-
-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.
-
-Packages installed to ``site-packages`` are added to an ``easy-install.pth``
-file, so that Python will be able to import the package by default. If you do
-not want this to happen, you should use the ``-m`` or ``--multi`` option, which
-allows multiple versions of the same package to be selected at runtime.
-
-Note that installing to a directory other than ``site-packages`` already
-implies the ``-m`` option, so if you cannot install to ``site-packages``,
-please see the `Options`_ section below (under ``--multi``) to find out how to
-select packages at runtime.
-
-
-Upgrading a Package
--------------------
-
-You don't need to do anything special to upgrade a package: just install the
-new version. If you're using ``-m`` or ``--multi`` (or installing outside of
-``site-packages``), the runtime system automatically selects the newest
-available version of a package. If you're installing to ``site-packages`` and
-not using ``-m``, installing a package automatically replaces its older version
-in the ``easy-install.pth`` file, so that Python will import the latest version
-by default.
-
-``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 (``site-packages`` installs only)
--------------------------------------------------------------
-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.
-Note that the named package and version must already have been installed to
-``site-packages``.
-
-If you'd like to switch to the latest version of ``PackageName``, you can do so
-like this::
-
- easy_install PackageName
-
-This will activate the latest installed version.
-
-
-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).
+Easy Install
+------------
-If you want to delete the currently installed version of a package (or all
-versions of a package), you should first run::
+A tool for doing automatic download/extract/build of distutils-based Python
+packages. For detailed documentation, see the accompanying EasyInstall.txt
+file, or visit the `EasyInstall home page`__.
- easy_install -m PackageName
+__ http://peak.telecommunity.com/DevCenter/EasyInstall
-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.
+"""
+import sys
+import os.path
+import pkg_resources
+import re
+import zipimport
+import zipfile
+import tarfile
+import shutil
+import urlparse
+import urllib
+import tempfile
+import __builtin__
-Options
--------
+from distutils.sysconfig import get_python_lib
+from shutil import rmtree # must have, because it can be called from __del__
+from pkg_resources import *
-``--zip, -z``
- Enable installing the package as a zip file. This can significantly
- increase Python's overall import performance if you're installing to
- ``site-packages`` and not using the ``--multi`` option, because Python
- process zipfile entries on ``sys.path`` much faster than it does
- directories. So, if you don't use this option, and you install a lot of
- packages, some of them may be slower to import.
+_os = sys.modules[os.name]
+_open = open
- But, this option is disabled by default, unless you're installing from an
- already-built binary zipfile (``.egg`` file). This is to avoid problems
- when using packages that dosn't support running from a zip file. Such
- packages usually access data files in their package directories using the
- Python ``__file__`` or ``__path__`` attribute, instead of the
- ``pkg_resources`` API. So, if you find that a package doesn't work properly
- when used with this option, you may want to suggest to the author that they
- switch to using the ``pkg_resources`` resource API, which will allow their
- package to work whether it's installed as a zipfile or not.
- (Note: this option only affects the installation of newly-built 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.)
-``--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.) Note that if you install to a directory other than ``site-packages``,
- this option is automatically in effect, because ``.pth`` files can only be
- used in ``site-packages`` (at least in Python 2.3 and 2.4). So, if you use
- the ``--install-dir`` or ``-i`` options, you must also use ``require()`` to
- enable packages at runtime
-
-``--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.
-"""
-import sys, os.path, pkg_resources, re, zipimport, zipfile, tarfile, shutil
-import urlparse, urllib, tempfile, __builtin__
-from distutils.sysconfig import get_python_lib
-from shutil import rmtree # must have, because it can be called from __del__
-from pkg_resources import *
-_os = sys.modules[os.name]
-_open = open
class Installer:
@@ -247,7 +124,7 @@ class Installer:
def install_eggs(self, dist_filename):
# .egg dirs or files are already built, so just return them
if dist_filename.lower().endswith('.egg'):
- return self.install_egg(dist_filename,True)
+ return [self.install_egg(dist_filename,True)]
# Anything else, try to extract and build
if os.path.isfile(dist_filename):