[Distutils] Side by side debug/non-debug eggs

[P.J. Eby]

At 09:45 AM 5/22/2009 -0400, Jean-Paul Calderone wrote:
>Hello all,
>
>Prior to eggs, if I wanted to have debug and non-debug versions of an
>extension module available, I could build and install the extension
>twice and the modules would happily co-exist, for example:
>
>
>  $ python setup.py build install
>  ...
>  $ python-dbg setup.py build install
>  ...
>  $ .../site-packages/twisted/python$ ls *.so
>  _epoll_d.so  _epoll.so
>  $ .../site-packages/twisted/python$
>If I then ran a debug build of Python, the debug extension would be loaded.
>When I ran a normal build of Python, the non-debug extension would be loaded.
>However, with eggs, each new egg completely replaces the last egg.  There
>seems to be no possibility for side-by-side builds.  Am I overlooking a
>feature of eggs or of setuptools?

Have you tried "setup.py develop"?  This builds extensions in-place 
in the source tree and adds the source tree to sys.path.