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From: Ciaran McCreesh <ciaran.mccreesh@googlemail.com>
To: gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev] [RFC] PROPERTIES=set for meta-packages that should behave like package sets
Date: Sun, 28 Sep 2008 23:28:53 +0100	[thread overview]
Message-ID: <20080928232853.6540b31d@snowmobile> (raw)
In-Reply-To: <48E0011E.7040808@gentoo.org>

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On Sun, 28 Sep 2008 15:11:42 -0700
Zac Medico <zmedico@gentoo.org> wrote:
> > GLEP 37 effectively abolishes virtuals. It doesn't try to overload
> > new behaviour onto packages.
> 
> Well, PROPERTIES=set doesn't necessarily need overload new behavior
> onto packages any more that virtual ebuilds do. If set-property
> ebuilds are mapped into set space then the overloaded behavior will
> come from them being referenced as sets, which won't overload their
> ebuild behavior since they can simply behave like existing
> meta-packages already do.

Ok, so say we have cat/foo-1:

    PROPERTIES=""
    DEPEND="cat/one cat/two cat/three"
    RDEPEND="cat/two cat/four"

and cat/foo-2:

    PROPERTIES="set"
    DEPEND="cat/one cat/two cat/three"
    RDEPEND="cat/two cat/four"

Then what does this do in package.use?

    cat/foo monkey

What does this do in package.mask?

    cat/foo

What about this?

    >=cat/foo-2

What about this?

    <cat/foo-2

What does this do?

    emerge -uDpv cat/foo

What about this?

    emerge -uDpv \>=cat/foo-2

What about this?

    emerge -uDpv \<cat/foo-2

Now let's introduce cat/bar-1:

    DEPEND="cat/foo"

and cat/bar-2:

    DEPEND="=cat/foo-1"

What does this do?

    emerge -e cat/bar

What about:

    emerge -e =cat/bar-1

And how is this anything other than highly weird?

Here's an alternate proposal: Repositories can ship sets via files in
sets/*.conf. The format is as described in [1]. In configuration files,
operations applied to a set are applied to anything matching any spec
listed in that set (or any set that set contains, and so on). On the
command line, sets and non-sets cannot be mixed, and multiple sets
cannot be specified.

[1]: http://paludis.pioto.org/configuration/sets.html

-- 
Ciaran McCreesh

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  reply	other threads:[~2008-09-28 22:29 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-28  0:21 [gentoo-dev] [RFC] PROPERTIES=set for meta-packages that should behave like package sets Zac Medico
2008-09-28 15:24 ` Marius Mauch
2008-09-28 17:42   ` Zac Medico
2008-09-28 20:26     ` Ciaran McCreesh
2008-09-28 20:44       ` Zac Medico
2008-09-28 20:32 ` Ciaran McCreesh
2008-09-28 20:53   ` Zac Medico
2008-09-28 21:01     ` Ciaran McCreesh
2008-09-28 22:11       ` Zac Medico
2008-09-28 22:28         ` Ciaran McCreesh [this message]
2008-09-28 22:56           ` Zac Medico
2008-09-28 23:02             ` Ciaran McCreesh
2008-09-28 23:37               ` Zac Medico
2008-09-29 15:13                 ` Bo Ørsted Andresen
2008-09-29 19:52                   ` Zac Medico
2008-09-30  4:47                     ` Jorge Manuel B. S. Vicetto
2008-09-30  5:31                       ` Zac Medico
2008-10-01  4:35                         ` [gentoo-dev] " Ryan Hill
2008-10-01 16:37                           ` Zac Medico
2008-10-02  2:51                             ` Jorge Manuel B. S. Vicetto
2008-10-04  6:05                               ` Ryan Hill
2008-10-04  6:42                                 ` Ryan Hill
2008-10-04 17:17                                   ` Zac Medico
2008-10-05 17:55                                     ` Ryan Hill
2008-10-13  2:11                                       ` Steve Long
2008-10-02 12:19                             ` Robert Bridge
2008-09-29  2:52             ` Duncan
2008-09-29  6:40               ` Zac Medico
2008-09-29 11:52                 ` Duncan
2008-09-29  6:04 ` [gentoo-dev] " Rémi Cardona
2008-09-29  6:33   ` Zac Medico
2008-09-29 19:52     ` [gentoo-dev] " Steve Long
2008-09-29 20:28       ` Zac Medico
2008-09-29 20:42         ` [gentoo-dev] " Steve Long

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