Getting lost as to what thread this belongs in... But another tack to take toward a single executable is Cython's embedding option: https://github.com/cython/cython/wiki/EmbeddingCython This is a quick and dirty way to create a C executable that will then run the cythonized code, all linked to the python run time. At this point, it still requires the python shared lib, and I think any other compiled extension is shared, too. And if you run Cython on all the python code and modules you use, you'll have a LOT of shared libs. But perhaps one could re-do the linking step of all that and get a single compiled exe. and IIUC, the way Windows dll hell works, if you stuff the whole pile into one dir -- you will get a single executable directory, if not a single file. and about a 2X performance boost, as well, when you cythonize pure Python, at least in my limited experience. Just a thought. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@noaa.gov