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wil93

Member

From: Italy

Registered: 2013-09-15

Posts: 72

[SOLVED-ish] How to depend on "either A or B"

I need the "virtualenv" command, which is provided by either python2-virtualenv or python-virtualenv. How do I depend on "either A or B"?

Last edited by wil93 (2015-08-31 18:19:26)

Alad

Wiki Admin/IRC Op

From: Bagelstan

Registered: 2014-05-04

Posts: 2,420

Website

Re: [SOLVED-ish] How to depend on "either A or B"

You can't, unless you have a virtual package which provides both python2 and python versions.

Adding some context to your problem might find an alternative solution.

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WorMzy

Administrator

From: Scotland

Registered: 2010-06-16

Posts: 13,649

Website

Re: [SOLVED-ish] How to depend on "either A or B"

If it's a compile-time dependency, then ideally create a split package, one depending on one version, the other on the other. If it's a runtime dependency, add both to the optdepends array and make it clear that one or the other is needed in a post-install message.

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wil93

Member

From: Italy

Registered: 2013-09-15

Posts: 72

Re: [SOLVED-ish] How to depend on "either A or B"

I now noticed that, actually, the two packages provide virtualenv and virtualenv2 respectively. However, from what I understand, I can use either of these commands equally (so I would check if one is available, and if it's not then use the other one).

I think that, for now, I will just depend on the python3 version. Thanks all