From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
Subject: Re: [PATCH] Add python2-seqmagick.
Date: Mon, 28 Sep 2015 11:54:32 +0200
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To: Ben Woodcroft <b.woodcroft@uq.edu.au>
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Ben Woodcroft <b.woodcroft@uq.edu.au> writes:

> Thanks for that Ricardo. One question though.
>
> On 26/09/15 00:09, Ricardo Wurmus wrote:
>> [..]
>>   (although the PYTHONPATH is a little too
>> broad as you also noted).
> I was wondering whether including the native-inputs breaks=20
> reproducibility. For instance, if we install seqmagick through a=20
> substitute, then the wrapper will point to a python-nose (a native-inpu=
t=20
> of seqmagick) directory in the store, even if this directory does not=20
> exist. So then, later building python-nose and creating the directory i=
n=20
> the PYTHONPATH might change the behavior of seqmagick, no?

I think this possibility does in fact exist, but it usually isn=E2=80=99t=
 a
problem unless the programme were designed to behave differently in the
presence of the native-input.

If, for example, python-nose provided a conflicting module overriding
one used by seqmagick at runtime, this could conceivably lead to an
error if python-nose would be added to the store.

I do not think that this is a realistic problem, but wrapping an
executable in a PYTHONPATH that is needlessly large is certainly not
nice.

~~ Ricardo