Re: [myhdl-list] installing myhdl stable and development package in parallel

[Jan D. <ja...@ja...>]

Günter Dannoritzer wrote:
> Hello,
> 
> Has somebody figured out a good way to install the stable version and 
> the code from the repository in parallel without the packages 
> interfering with each other?
> 
> I did check out the mercurial code as myhdl_hg and then set the 
> PYTHONPATH to it. My idea was to decide by the way of doing the import 
> to take either of the packages. So instead of doing 'from myhdl' do 
> 'from myhdl_hg.myhdl'. Unfortunately there are imports inside the myhdl 
> package that do the 'from myhdl' type import. So I end up mixing 
> packages when doing the import from the repository.
> 
> Are there any better ways of doing that?

I wouldn't try to use the python namespace to control version selection.

I think the cleanest way is to control $PYTHONPATH. Suppose the stable
version is selected by default, then you could have a shell script
to select the development version instead, by doing something like:

PYTHONPATH="$HOME/dev/myhdl:${PYTHONPATH}"
export PYTHONPATH


-- 
Jan Decaluwe - Resources bvba - http://www.jandecaluwe.com
     From Python to silicon:
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