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From: Felix Zielcke <fzielcke@z-51.de>
Newsgroups: linux.debian.maint.python
Subject: Re: pytest 4 and autopkgtest dependency loops
Date: Fri, 09 Aug 2019 20:30:02 +0200
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Am Freitag, den 09.08.2019, 20:05 +0200 schrieb Graham Inggs:
> On Fri, 9 Aug 2019 at 19:28, Scott Talbert <swt@techie.net> wrote:
> > Thanks.  As an aside, what does the tilde at the end of the version
> > number
> > mean?  I have seen that in control files before, but I've been
> > unable to
> > find anything in the documentation about it.
> 
> The tilde is to accommodate backports.
> 
> e.g. a backport of python-pytest-xdist might be versioned 1.29.0-
> 1~bpo10+1
> in that case, it would still be broken by (<< 1.29.0-1) without the
> tilde.

The general meaning of the tilde is that it's lower then the empty
string.
So that 1.0-1 is considered newer then 1.0-1~foo