Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages

From	Andre Majorel <aym-naibed@teaser.fr>
Newsgroups	linux.debian.user
Subject	Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages
Date	2016-09-28 22:00 +0200
Message-ID	<smtbj-2Ad-11@gated-at.bofh.it> (permalink)
References	<skVbI-1uc-15@gated-at.bofh.it> <skVv3-1Az-1@gated-at.bofh.it> <smoEF-8kS-3@gated-at.bofh.it> <smpho-by-19@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 2016-09-28 10:46 -0500, John Hasler wrote:
> Vincent Lefevre writes:
> > Things like that should not happen. But this is not a bug in the perl
> > packages. This is a misfeature of apt / aptitude, which want to remove
> > packages instead of holding the new packages (well, AFAIK, aptitude
> > has improved, but is still not perfect).
> 
> Aptitude can't read your mind.  When you tell it to install
> something it assumes that you mean what you say and proposes
> solutions to any conflicts based on various heuristics.

When there's some kind of conflict during a package installation
or upgrade, the first solutions proposed by aptitude almost
invariably involve large numbers of package removals. The
simple solution that upgrades/installs what can be and leaves
the rest alone is usually there but buried under at least three
-- and sometimes tens of -- very disruptive ones.

If aptitude got it wrong half the time, it might be for want of
reading minds. But in my experience it gets it consistently
wrong. Suggests to me that what it needs is new heuristics.

-- 
André Majorel <http://www.teaser.fr/~amajorel/>
Ever got spam through an address harvested from bugs.debian.org ?
Neither have I.

Thread

WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Cindy-Sue Causey <butterflybytes@gmail.com> - 2016-09-24 15:30 +0200
  Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Sven Hartge <sven@svenhartge.de> - 2016-09-24 15:50 +0200
    Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Cindy-Sue Causey <butterflybytes@gmail.com> - 2016-09-24 17:40 +0200
      Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages John Hasler <jhasler@newsguy.com> - 2016-09-24 20:20 +0200
      Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Seeker <seeker5528@comcast.net> - 2016-09-24 21:20 +0200
      Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Jonathan Dowland <jmtd@debian.org> - 2016-09-30 09:20 +0200
    Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-28 17:10 +0200
      Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages John Hasler <jhasler@newsguy.com> - 2016-09-28 17:50 +0200
        Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-28 20:00 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Brad Rogers <brad@fineby.me.uk> - 2016-09-28 20:40 +0200
            Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-29 11:10 +0200
              Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Darac Marjal <mailinglist@darac.org.uk> - 2016-09-29 11:20 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-29 13:30 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-29 13:50 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Stefan Monnier <monnier@iro.umontreal.ca> - 2016-09-28 20:40 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Sven Hartge <sven@svenhartge.de> - 2016-09-28 21:40 +0200
            Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-29 11:10 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages John Hasler <jhasler@newsguy.com> - 2016-09-28 22:00 +0200
            Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Stefan Monnier <monnier@iro.umontreal.ca> - 2016-09-28 22:30 +0200
              Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Miles Fidelman <mfidelman@meetinghouse.net> - 2016-09-28 23:10 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Don Armstrong <don@debian.org> - 2016-09-28 23:50 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages <tomas@tuxteam.de> - 2016-09-29 11:20 +0200
            Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-29 11:20 +0200
        Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Andre Majorel <aym-naibed@teaser.fr> - 2016-09-28 22:00 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages John Hasler <jhasler@newsguy.com> - 2016-09-28 22:30 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Sven Hartge <sven@svenhartge.de> - 2016-09-28 23:10 +0200
            Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-29 11:00 +0200
              Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-29 14:20 +0200
              Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Stefan Monnier <monnier@iro.umontreal.ca> - 2016-09-30 01:10 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-09-30 11:40 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Stefan Monnier <monnier@iro.umontreal.ca> - 2016-09-30 15:40 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-10-04 09:10 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages rhkramer@gmail.com - 2016-10-04 11:50 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-05 00:00 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Rick Thomas <rbthomas@pobox.com> - 2016-10-05 21:40 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-09-30 15:40 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Ric Moore <wayward4now@gmail.com> - 2016-09-30 16:30 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-03 16:40 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Andre Majorel <aym-naibed@teaser.fr> - 2016-09-30 21:10 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Henrique de Moraes Holschuh <hmh@debian.org> - 2016-10-01 20:00 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-10-04 09:40 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-10-04 09:30 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Mark Fletcher <mark27q1@gmail.com> - 2016-10-04 16:20 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages claude juif <claude.juif@gmail.com> - 2016-10-09 07:40 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-05 00:00 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-10-07 16:50 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Ben Caradoc-Davies <ben@transient.nz> - 2016-10-07 22:30 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-13 01:10 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Ben Caradoc-Davies <ben@transient.nz> - 2016-10-13 01:50 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-12-07 16:10 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-12-08 00:50 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-12-16 12:50 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Joe <joe@jretrading.com> - 2016-12-16 19:10 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-12-19 12:40 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Joe <joe@jretrading.com> - 2016-12-19 20:00 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Vincent Lefevre <vincent@vinc17.net> - 2016-12-20 01:40 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-12-21 20:00 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Joe <joe@jretrading.com> - 2016-12-21 21:20 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages David Wright <deblis@lionunicorn.co.uk> - 2016-12-16 20:00 +0100
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages claude juif <claude.juif@gmail.com> - 2016-10-09 07:30 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-09 18:00 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages claude juif <claude.juif@gmail.com> - 2016-10-09 18:30 +0200
                Unsubscribing in order to killfile one individual.  Was: Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-10 01:50 +0200
                Re: Unsubscribing in order to killfile one individual. Was: Re:  WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Bob Bernstein <poobah@ruptured-duck.com> - 2016-10-10 03:20 +0200
                Re: Unsubscribing in order to killfile one individual. Was: Re:  WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Joe <joe@jretrading.com> - 2016-10-10 10:10 +0200
                Re: Unsubscribing in order to killfile one individual. Was: Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-10 13:20 +0200
                Re: Unsubscribing in order to killfile one individual. Was: Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-10 13:20 +0200
                Re: Unsubscribing in order to killfile one individual. Was: Re:  WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Joe <joe@jretrading.com> - 2016-10-10 20:10 +0200
                Re: Unsubscribing in order to killfile one individual. Was: Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Lisi Reisz <lisi.reisz@gmail.com> - 2016-10-10 23:40 +0200
              Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages John Hasler <jhasler@newsguy.com> - 2016-09-30 17:20 +0200
                Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Henrique de Moraes Holschuh <hmh@debian.org> - 2016-09-30 20:10 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Rick Thomas <rbthomas@pobox.com> - 2016-10-01 10:30 +0200
  Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages rhkramer@gmail.com - 2016-09-24 15:50 +0200
    Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Cindy-Sue Causey <butterflybytes@gmail.com> - 2016-09-24 18:00 +0200
    Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Glenn English <ghe2001@gmail.com> - 2016-09-24 18:20 +0200
      Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Christian Seiler <christian@iwakd.de> - 2016-09-24 18:40 +0200
        Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages "Andrew M.A. Cater" <amacater@galactic.demon.co.uk> - 2016-09-24 20:30 +0200
          Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages John Hasler <jhasler@newsguy.com> - 2016-09-24 20:40 +0200
  Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages Glenn English <ghe2001@gmail.com> - 2016-09-24 19:00 +0200
    Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable packages John Hasler <jhasler@newsguy.com> - 2016-09-24 20:20 +0200
  Re: WARNING! New Perl/Perl-base upgrade removes 141 Sid/Unstable  packages Ben Caradoc-Davies <ben@transient.nz> - 2016-09-24 23:40 +0200

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