Re: Understanding package dependencies

[Jörg-Volker Peetz <jvpeetz@web.de>]

Greg Wooledge wrote on 07/10/2023 20:45:
> On Sat, Oct 07, 2023 at 08:27:11PM +0200, Sven Joachim wrote:
> > Yes, aptitude can do that.   Quoting the manual[1]:
> >
> > ,----
> > | ?provides(pattern), ~Ppattern
> > |
> > |     Matches package versions which provide a package that matches the
> > |     pattern. For instance, “?provides(mail-transport-agent)” will match
> > |     all the packages that provide “mail-transport-agent”.
> > `----
> >
> > In the current case, "aptitude search '~Plsb-base'" does the trick.
>
> Why on EARTH was this not ported to apt-patterns(7)?
>
> unicorn:~$ apt list '?conflicts(~nlsb-base)'
> Listing... Done
> sysvinit-utils/stable,now 3.06-4 amd64 [installed]
> sysvinit-utils/stable 3.06-4 i386
> unicorn:~$ apt list '?provides(~nlsb-base)'
> Listing... Error!
> E: input:0-21: error: Unrecognized pattern '?provides'
>     ?provides(~nlsb-base)
>     ^^^^^^^^^^^^^^^^^^^^^
How about

  apt list '?reverse-depends(?name(lsb-base))'

or

  apt list '~RDepends:~nlsb-base'

Regards,
Jörg.