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.

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