At 06:49 PM 11/29/2006 -0500, Barry Warsaw wrote: >What might be nice would be to build a little more >infrastructure into Python to support eggs, by say adding a default >PEP 302 style importer that knows how to search for eggs in >'nests' (a directory containing a bunch of eggs).
If you have setuptools generate your scripts, the eggs are searched for and added to sys.path automatically, with no need for a separate importer. If you write standalone scripts (not using "setup.py develop" or "setup.py install"), you can use pkg_resources.require() to find eggs and add them to sys.path manually. If you want eggs available when you start Python, easy_install puts them on sys.path using .pth files by default. So, I'm not clear on what use case you have in mind for this importer, or how you think it would work. (Any .egg file in a sys.path directory is already automatically discoverable by the means described above.) >What if then that importer were general enough, or had a subclass >that implemented a policy for applications where <prefix>/lib/ >pythonX.X/app-packages/<application> became a nest directory. Simply installing your scripts to the same directory as the eggs they require, is sufficient to ensure this. Also, since eggs are versioned, nothing stops you from having one giant systemwide egg directory. Setuptools-generated scripts automatically adjust their sys.path to include the specific eggs they need - and "need" can be specified to an exact version if desired (e.g. for system admin tools). >I haven't really thought this through so maybe it's a stupid idea, >but ISTM that would make management, installation, and use in an >application about as simple as possible. (Oh yeah, add an -- >uninstall switch too :). Yeah, that's targeted for the "nest" package management tool, which I may have some time to work on someday, in my copious free time. :) In the meantime, 'easy_install -Nm eggname; rm -rf /path/to/the.egg' takes care of everything but the scripts. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
