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From Kevin Sweeney <kevi...@apache.org>
Subject Re: override python interpreter when building pex using pants
Date Tue, 02 Dec 2014 18:38:09 GMT
I don't believe this is possible until
https://issues.apache.org/jira/browse/AURORA-358 is complete.

On Tue, Dec 2, 2014 at 10:23 AM, Brian Wickman <wickman@apache.org> wrote:

> You can use ./pants build -i <interpreter> <target> to build with a
> specific interpreter, but it will still revert to a #!/usr/bin/env
> pythonX.X hashbang line.  There is not yet a pants environment variable to
> switch interpreters at runtime but it would be a straightforward feature to
> add.  I've filed https://github.com/pantsbuild/pex/issues/27
>
> As a workaround, I *think* you can use -thermos_executor_path in the
> scheduler to just do:
>
> -thermos_executor_path="/my/custom/python/bin/python2.7
> /usr/local/bin/thermos_executor"
>
> or whatever the path to the executor is, since pex files can be invoked as
> ordinary python scripts.  If for whatever reason Aurora doesn't like the
> space there, you can always just create a wrapper e.g.
> /usr/local/bin/thermos_executor.sh that just contains the same.
>
> ~brian
>
> On Tue, Dec 2, 2014 at 8:20 AM, Bhuvan Arumugam <bhuvan@apache.org> wrote:
>
> > It's more of pants/pex question.
> >
> > I've installed python2.7 in a custom path. I want to build
> > aurora_client using this interpreter. By default, it use python2.7 in
> > the PATH (#!/usr/bin/env python2.7). How do I change it to use
> > python2.7 in custom path? pex support this feature with --interpreter
> > option, but pants dont seem to expose it.
> >
> > IOW, the first line of pex is #!/usr/bin/env python2.7; i want to
> > change it as #!/my/custom/python/bin/python2.7.
> >
> > The current workaround is to add /my/custom/python/bin to PATH
> > everytime we execute pex. It's not feasible with thermos_executor.
> > It's launched from mesos-slave, unless i fix mesos-slave to expose
> > /my/custom/python/bin in PATH, i can't launch thermos_executor.
> >
> > Is there a workaround? Is there any undocumented pants env that can
> > help to override the interpreter?
> >
> > --
> > Regards,
> > Bhuvan Arumugam
> > www.livecipher.com
> >
>

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