Enabling ports to be installed for different python versions

[David Naylor]

On Saturday, 3 August 2013 12:32:45 Marcus von Appen wrote:
> ...at the same time.
> 
> Use PKGNAMEPREFIX/SUFFIX for python ports
> 
> - this is a clean up task (which should be done regardless of everything
>   else). Some python modules miss the prefix, making it impossible to
>   install them for multiple python versions at the same time

I think not all python based ports should use PKGNAMEPREFIX/SUFFIX.  Those are 
ports who's main contribution is a bin/ and not libraries.  In these cases the 
use of python is largely incidental.  Two example are devel/eric4 (there is an 
eric5 that supports python3) and ports-mgmt/portbuilder.  
 
> Support for non-CPython implementations:
> 
> - A mid-term goal should be to offer support PyPy in USE_PYTHON, etc.
>   This can introduce a new PYTHON_PKGNAMEPREFIX and SUFFIX and should
>   have only a minimal impact on implementing the change, once everything
>   else has been done.

I don't think we need to limit the scope to only PyPy, there is also 
IronPython and Jython (perhaps longer term goals).  I have the following 
suggestions for PYTHON_PKGNAMEPREFIX:
 - ppyXY for PyPy
 - p3pyXY for PyPy3
 - ipyXY for IronPython
 - jpyXY for Jython
where XY is the implementation version.  

> 4) Support for non-CPython implementations
> 
>    A rather small task; will mainly involve marking ports as not working
>    under PyPy.

Can you please clarify this?  Are you proposing:
 - marking all ports as not working under PyPy, or 
 - those ports that fail to build/install under PyPy or
 - those ports that do not run under PyPy (this will require some form of 
testing the ports after installation).  

I'll happily act as liaison between the Python/FreeBSD PyPy teams if needed.  

Thank you for undertaking this fixup of python ports :-D

Regards
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