[Python-Dev] PEP 297: Support for System Upgrades (original) (raw)

Guido van Rossum guido@python.org
Mon, 06 Jan 2003 15:15:41 -0500

Ok, I've started looking at adding support for this. Here's a couple of things I found:

* getpath.c: Some of the '/' path delimiters are hard coded; shouldn't these be replaced with SEP ?

All the platforms that I'm awware of that don't use '/' have their own getpath.c copy anyway (the one for Windows is PC/getpathp.c).

* There's no easy way to find the first item on sys.path which starts the default path added by Python at startup time. It seems that a suffix search for "python23.zip" gives the best hint. The only other possibility I see is writing the support code directly into getpath.c.

That's where I'd put it, yes.

* site.py contains code which prefixes "site-packages" with both sys.prefix and sys.execprefix. Is this really used anywhere ? (distutils and the old Makefile.pre.in both install to sys.prefix per default)

I thought they might install extension modules in exec_prefix. But maybe it's a YAGNI.

--Guido van Rossum (home page: http://www.python.org/~guido/)