SQLAlchemy 0.6 has this nice optimization for using c extensions for
performance. It almost seems it should be enabled by default, but is
not (probably since it isn't pure python).
To install with c extensions, you need to pass "--with-cextensions" to
the setup.py of SQLAlchemy. I imagined that certainly setuptools has
a way to accomplish this, even if SQLAlchemy is being installed as a
dependency of the turbogears project.
Apparently not! (Or at least my research found no mechanism for this).
I invented this work-around, (not pretty, by necessity). If there is
a better way (wouldn't surprise me), I'd love to see it, but this
works:
In your turbogears application project's setup.py, you can accomplish
passing the "--with-cextensions" to SQLAlchemy's setup.py as follows:
===================================================
# -*- coding: utf-8 -*-
try:
from setuptools import setup, find_packages
except ImportError:
from ez_setup import use_setuptools
use_setuptools()
from setuptools import setup, find_packages
#kb: since apparently setuptools has no mechanism to pass
# arguments to the dependencies, I am "decorating" the function
# that runs the command and adding the arguments myself...
from setuptools.command.easy_install import easy_install
normal_run_setup_fn = easy_install.run_setup
def setup_hook(self, setup_script, setup_base, args):
# SQLAlchemy we want to run setup.py with
if setup_script.find('/SQLAlchemy') > -1 and
setup_script.endswith('setup.py'):
args.insert(0,'--with-cextensions')
normal_run_setup_fn(self, setup_script, setup_base, args)
easy_install.run_setup = setup_hook
setup(
name='yourtgapp',
version='0.1',
description='',
author='',
author_email='',
install_requires=[
"SQLAlchemy >= 0.6",
"tg.devtools >= 2.0.1",
......
=======================================================
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