[capi-sig] Win64 Vim: sys.path not set correctly

[George V. Reilly]

As you may know, Vim has offered an embedded Python for several years.
I'm updating the Win64 port of Vim and decided to make the Python
interface work too.

I think I've fixed all the tedious Py_ssize_t issues, and the simple
sanity test of
  :py print "hi"
works. However, more complex examples fall over with ImportErrors. As
far as I can tell, it's related to sys.path, which shows as:
  ['', 'd:\\Python25\\python25.zip', '.\\DLLs', '.\\lib',
'.\\lib\\plat-win', '.\\lib\\lib-tk', 'D:\\vimsrc\\vim7\\src']

When I run python interactively, sys.path looks like:
  ['', 'd:\\Python25\\python25.zip', 'd:\\Python25\\DLLs',
'd:\\Python25\\lib', 'd:\\Python25\\lib\\plat-win',
'd:\\Python25\\lib\\lib-tk', 'd:\\Python25',
'd:\\Python25\\lib\\site-packages']

If I modify sys.path to use the fully qualified pathnames, things
start working. If I build a 32-bit version of Vim, things work out of
the box.

I'm loading python25.dll; i.e., Vim was compiled with
-DDYNAMIC_PYTHON. The python25.dll was installed by
python-2.5.1.amd64.msi.

My patches (and the complete if_python.c) can be found at
http://www.georgevreilly.com/vim/vim-win64-20071028.zip

Any ideas?

Thanks.
-- 
/George V. Reilly
http://www.georgevreilly.com/blog