In article <4b42b45e.9070...@hastings.org>, Larry Hastings <la...@hastings.org> wrote: > Ned Deily wrote: > > Also, setuptools (and, its successor, distribute, which supports Python > > 3) allow the installation and management of multiple versions of a > > package within one python site-library instance. > That sounds lovely too, but I can't figure out what facility setuptools > / distribute permits that. Could you be more specific? A link to the > documentation for this feature would be much appreciated.
By default, easy_install from setuptools/distribute uses version information from a package's setup.py to qualify the package name and manipulate python's sys.path to ensure the most recent version is the one found by default. There are options to easy_install which control this. See in particular the easy_install "--multi-version" command-line option (the links here are to those for the Distribute fork of setuptools): http://packages.python.org/distribute/easy_install.html If you need to declare specific version dependencies for other packages, you can do so in setup.py. See the Declaring Dependencies section of the setuptools API documentation: http://packages.python.org/distribute/setuptools.html Much of the magic is handled by setuptools version of pkg_resources: http://packages.python.org/distribute/pkg_resources.html -- Ned Deily, n...@acm.org -- http://mail.python.org/mailman/listinfo/python-list
