Restructure easy_install as a distutils "Command" object, so that it can

access the distutils configuration and logging infrastructure, and can
"inherit" options from a distutils setup script that wants to use it to
install its own dependencies.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041052

EasyInstall.txt

@@ -179,11 +179,39 @@ files or directories.
 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::
+
+    [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/
+
+See also the current Python documentation on the `use and location of distutils
+configuration files <http://docs.python.org/inst/config-syntax.html>`_.
+
 
 Command-Line Options
 --------------------
 
-``--zip, -z``
+``--zip-ok, -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
@@ -221,11 +249,13 @@ Command-Line Options
     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``,
+    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
+    the ``--install-dir`` or ``-d`` option (or they are set via configuration
+    file(s)) 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
@@ -233,39 +263,53 @@ Command-Line Options
     ``pkg_resources.require()`` to enable the installed package(s) that you
     need.
 
-``--build-directory=DIR, -b DIR`` (New in 0.3a3)
-    Set the directory used to download, extract, and install the package.  The
-    directory is not cleared before or after installation, so the downloaded
-    packages and extracted contents will remain there afterwards, allowing you
-    to read any documentation, examples, scripts, etc. that may have been
-    included with the source distribution (if any).
+    (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 directory.
 
-    This option can only be used when you are specifying a single installation
-    URL or filename, so that the installer will not be confused by the presence
-    of multiple ``setup.py`` files in the build directory.
+``--find-links=URL, -f URL`` (Option renamed in 0.4a2)
+    Scan the specified "download pages" for direct links to downloadable eggs
+    or source distributions.  Any usable packages will be downloaded if they
+    are required by a command line argument.  For example, this::
 
-``--scan-url=URL, -s URL`` (New in 0.4a1)
-    Scan the specified "download page" for direct links to downloadable eggs or
-    source distributions.  Any usable packages will be downloaded if they are
-    required by a command line argument.  For example, this::
-
-        easy_install -s http://peak.telecommunity.com/dist PyProtocols
+        easy_install -f http://peak.telecommunity.com/dist PyProtocols
 
     will download and install the latest version of PyProtocols linked from
     the PEAK downloads page, but ignore the other download links on that page.
-
-    You may use this option more than once, to list multiple download pages.
-    If all requested packages can be found using the specified download pages,
-    the Python Package Index will *not* be consulted.
+    If all requested packages can be found using links on the specified
+    download pages, the Python Package Index will *not* be consulted.  You can
+    use ``file:`` URLs to reference a local filename.
+
+    You may specify multiple URLs with this option, separated by whitespace.
+    Note that on the command line, you will probably have to surround the URLs
+    with quotes, so that they are recognized as a single option value.  You can
+    also specify URLs in a configuration file; see `Configuration Files`_,
+    above; but note that this means the specified pages will be downloaded
+    every time you use EasyInstall (unless overridden on the command line) and
+    thus may make startup slower.
 
 ``--index-url=URL, -u URL`` (New in 0.4a1)
     Specifies the base URL of the Python Package Index.  The default is
     http://www.python.org/pypi if not specified.  When a package is requested
-    that is not locally available or linked from a ``--scan-url`` download
+    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.
 
+``--build-directory=DIR, -b DIR`` (New in 0.3a3)
+    Set the directory used to download, extract, and install the package.  The
+    directory is not cleared before or after installation, so the downloaded
+    packages and extracted contents will remain there afterwards, allowing you
+    to read any documentation, examples, scripts, etc. that may have been
+    included with the source distribution (if any).
+
+    This option can only be used when you are specifying a single installation
+    URL or filename, so that the installer will not be confused by the presence
+    of multiple ``setup.py`` files in the build directory.
+
 
 Release Notes/Change History
 ============================
@@ -275,6 +319,11 @@ Known Issues
    time out or be missing a file.
 
 0.4a2
+ * Added support for setting options via distutils configuration files
+
+ * 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.
 
@@ -292,6 +341,11 @@ Known Issues
    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.
+
 0.4a1
  * Added ``--scan-url`` and ``--index-url`` options, to scan download pages
    and search PyPI for needed packages.

setuptools/__init__.py

@@ -4,7 +4,7 @@ import distutils.core, setuptools.command
 from setuptools.dist import Distribution, Feature
 from setuptools.extension import Extension
 from setuptools.depends import Require
-from distutils.core import Command
+from distutils.core import Command as _Command
 from distutils.util import convert_path
 import os.path
 
@@ -37,6 +37,8 @@ def find_packages(where='.'):
     return out
 
 
+
+
 def setup(**attrs):
     """Do package setup
 
@@ -47,3 +49,34 @@ def setup(**attrs):
     """
     attrs.setdefault("distclass",Distribution)
     return distutils.core.setup(**attrs)
+    
+
+class Command(_Command):
+    __doc__ = _Command.__doc__
+
+    command_consumes_arguments = False
+
+    def reinitialize_command(self, command, reinit_subcommands=0, **kw):
+        cmd = _Command.reinitialize_command(self, command, reinit_subcommands)
+        for k,v in kw.items():
+            setattr(cmd,k,v)    # update command with keywords
+        return cmd
+
+
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setuptools/command/bdist_egg.py

@@ -4,7 +4,7 @@ Build .egg distributions"""
 
 # This module should be kept compatible with Python 2.3
 import os
-from distutils.core import Command
+from setuptools import Command
 from distutils.util import get_platform
 from distutils.dir_util import create_tree, remove_tree, ensure_relative,mkpath
 from distutils.sysconfig import get_python_version, get_python_lib
@@ -234,16 +234,16 @@ class bdist_egg(Command):
         return match.group(1)
 
     def call_command(self,cmdname,**kw):
-        cmd = self.reinitialize_command(cmdname)
+        """Invoke reinitialized command `cmdname` with keyword args"""
         for dirname in INSTALL_DIRECTORY_ATTRS:
-            if dirname in cmd.__dict__:     # don't overwrite methods!
-                setattr(cmd,dirname,self.bdist_dir)
-        cmd.skip_build = self.skip_build
-        for k,v in kw.items():
-            setattr(cmd,k,v)
+            kw.setdefault(dirname,self.bdist_dir)
+        kw.setdefault('skip_build',self.skip_build)
+
+        cmd = self.reinitialize_command(cmdname, **kw)
         self.run_command(cmdname)
         return cmd
 
+
 # Attribute names of options for commands that might need to be convinced to
 # install to the egg build directory
 

setuptools/dist.py

 __all__ = ['Distribution', 'Feature']
+
 from distutils.core import Distribution as _Distribution
 from distutils.core import Extension
 from setuptools.depends import Require
@@ -7,8 +8,37 @@ from setuptools.command.install import install
 from setuptools.command.install_lib import install_lib
 from distutils.errors import DistutilsOptionError, DistutilsPlatformError
 from distutils.errors import DistutilsSetupError
+
 sequence = tuple, list
 
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 class Distribution(_Distribution):
     """Distribution with support for features, tests, and package data
 
@@ -54,7 +84,6 @@ class Distribution(_Distribution):
     the distribution.  They are used by the feature subsystem to configure the
     distribution for the included and excluded features.
     """
-
     def __init__ (self, attrs=None):
         have_package_data = hasattr(self, "package_data")
         if not have_package_data:
@@ -83,6 +112,15 @@ class Distribution(_Distribution):
         """Convert feature name to corresponding option attribute name"""
         return 'with_'+name.replace('-','_')
 
+
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+
+
+
+
+
+
+
     def _set_global_opts_from_features(self):
         """Add --with-X/--without-X options based on optional features"""
 
@@ -277,14 +315,55 @@ class Distribution(_Distribution):
             )
         map(self.exclude_package, packages)
 
+
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     def _parse_command_opts(self, parser, args):
         # Remove --with-X/--without-X options when processing command args
         self.global_options = self.__class__.global_options
         self.negative_opt = self.__class__.negative_opt
-        return _Distribution._parse_command_opts(self, parser, args)
+
+        # Handle commands that want to consume all remaining arguments
+        command = args[0]
+        nargs = _Distribution._parse_command_opts(self, parser, args)
+
+        cmd_class = self.get_command_class(command)
+        if getattr(cmd_class,'command_consumes_arguments',None):
+            self.get_option_dict(command)['args'] = ("command line", nargs)
+            if nargs is not None:
+                return []
+
+        return nargs
+
 
     def has_dependencies(self):
         return not not self.requires
+
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