autoinstall 0.1a

package loader for auto installing Python packages.

package loader for auto installing Python packages.

A package loader in the spirit of Zero Install that can be used to
inject dependencies into the import process. Autoinstall can be
bootstraped with the nascent package loader bootstrap module. For
example::

try:
_version = "0.1a"
import autoinstall
if autoinstall.__version__ != _version:
raise ImportError("A different version than exprected found.")
except ImportError, e:
# http://svn.python.org/projects/sandbox/trunk/bootstrap/bootstrap.py
import bootstrap
pypi = "http://pypi.python.org"
dir = "packages/source/a/autoinstall"
url = "%s/%s/autoinstall-%s.tar.gz" % (pypi, dir, _version)
bootstrap.main((url,))
import autoinstall

# once imported you can bind any top level package name to a URL
# pointing to something that can be imported using the zipimporter

autoinstall.bind("pymarc", "http://pypi.python.org/packages/2.5/p/pymarc/pymarc-2.1-py2.5.egg")

import pymarc

print pymarc.__version__, pymarc.__file__


References::

http://0install.net/
http://www.python.org/dev/peps/pep-0302/
http://svn.python.org/projects/sandbox/trunk/import_in_py
http://0install.net/injector-find.html
http://roscidus.com/desktop/node/903

TODO::

optional interfaces...

def get_data(pathname) -> string with file data.

Return the data associated with 'pathname'. Raise IOError if
the file wasn't found.");

def is_package,
"is_package(fullname) -> bool.

Return True if the module specified by fullname is a package.
Raise ZipImportError is the module couldn't be found.");

def get_code,
"get_code(fullname) -> code object.

Return the code object for the specified module. Raise ZipImportError
is the module couldn't be found.");

def get_source,
"get_source(fullname) -> source string.

Return the source code for the specified module. Raise ZipImportError
is the module couldn't be found, return None if the archive does
contain the module, but has no source for it.");