[SciPy-Dev] Installing multiple scipy versions for development

[Travis Oliphant]

This is exactly what Anaconda CE let's you do by creating environments:  http://docs.continuum.io/conda/examples/create.html

Here is more information about Anaconda CE: 

- Cross-platform distribution for Linux, Windows, Mac, both 32 and 64 bit.
- Large list of included libraries, selected based on our knowledge of the Python/Scipy data analytics space
- All libraries and the Python interpreter itself are built to be installed relocatably, so you can put Anaconda into ~/anaconda or /opt/anaconda and not worry about it polluting the rest of /usr/lib or /usr/local/lib.
- Robust support for concurrently having *multiple versions* of libraries and even the Python interpreter installed all at the same time.  Switching between these is as easy as setting PATH or explicitly running a particular 'python' via its full path.  (See http://docs.continuum.io/anaconda/launcher.html#environments for more information about how this works.)
- Python package management tool that handles C extensions and shared libraries in a robust, reliable manner.  (http://docs.continuum.io/conda/intro.html)

The functionality for much of this is actually in the conda package which is available here:  https://github.com/ContinuumIO/conda or here: http://pypi.python.org/pypi/conda/1.2.1-52-g44d5674


You can also use Python virtual environments, but Anaconda's environments are intended to be more general and work with more than just different versions of Python packages.  

Best regards,

-Travis



On Dec 28, 2012, at 4:09 PM, Alexander Löw wrote:

> Hi,
> 
> I am a newbie to scipy development, thus sorry, if the following 
> question might sound stupid for some of you:
> 
> What is best practice to install multiple scipy versions on my machine 
> for local development?
> 
> I run python under Ubuntu and have general python 2.7 installed together 
> with scipy 0.10.1.
> I recently checked out the recent scipy source code. Now I want to be 
> able to switch easily between the developer version of scipy and the 
> stable code. How can I do this? I did not find anything in the Wiki. I 
> guess I would need to change some PATH variables during by session, but how?
> 
> Thanks for your help!
> 
> Alex
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