[ZODB-Dev] ZODB3 installation ambiguous conclusion

[Ross Boylan]

easy_install ZODB3 looked fairly good during installation until  the end:
<quote>
Processing transaction-1.0.0.tar.gz
Running transaction-1.0.0\setup.py -q bdist_egg --dist-dir 
c:\users\ross\appdata\local\temp\easy_install-cw1i4f\transaction-1.0.0\egg-dist-tmp-z7nrfd
Adding transaction 1.0.0 to easy-install.pth file

Installed c:\python26\lib\site-packages\transaction-1.0.0-py2.6.egg
Finished processing dependencies for ZODB3
********************************************************************************
WARNING:

        An optional code optimization (C extension) could not be compiled.

        Optimizations for this package will not be available!

Unable to find vcvarsall.bat
********************************************************************************
</quote>
This seems to say things will work, just not as fast as they could.  But 
I'm a little puzzled why things would work at all, since I don't have a 
build environment on the machine (well, there is a compiler that's part 
of the MS SDK, but I'm not really sure how capable or operational it 
is--it did seem to compile some sample C code in the kit).

Is there a pure python fallback for the C code?  I thought ZODB had some 
C-level magic.

Ross