* Re: [devel] [git update] packages/apt: heads/master
@ 2007-08-11 16:13 ` Dmitry V. Levin
2007-08-13 10:03 ` Alexey Tourbin
0 siblings, 1 reply; 2+ messages in thread
From: Dmitry V. Levin @ 2007-08-11 16:13 UTC (permalink / raw)
To: ALT Devel discussion list
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On Sat, Aug 11, 2007 at 08:06:56PM +0400, Alexey M. Tourbin wrote:
> Update of /people/at/packages/apt.git
>
> Changes statistics since `0.5.15lorg2-alt12' follows:
> apt-0.5.15lorg2-alt-genpkglist-reqfiles.patch | 106 +++++++++++++++++++++++++
> apt.spec | 6 +-
> 2 files changed, 108 insertions(+), 4 deletions(-)
>
> Changelog since `0.5.15lorg2-alt12' follows:
> commit 30e27b0f1c74b4f67354a6035fae3e210131bca1
> Author: Alexey Tourbin <at@altlinux>
> Date: Sat Aug 11 20:01:05 2007 +0400
>
> apt-0.5.15lorg2-alt-genpkglist-reqfiles.patch
>
> genpkglist strips file lists by default (without --bloat option).
> It keeps only some "useful files" by using a few ad hoc patterns.
>
> This can break file-level dependencies. Consider pkgA requires
> /usr/lib/foo1/bar, and pkgB owns this file without explicitly
> providing it. Now if genpkglist strips /usr/lib/foo1/bar
> from pkgB file list, this is going to be an unmet dependency.
>
> This patch changes genpkglist behaviour, so that, when genpkglist
> is invoked without --bloat option, it first finds all file-level
> dependencies (something like "rpm -qaR |grep ^/"). This requires
> a separate pass. The list of file-level dependencies is saved into
> "reqfiles" global variable. And on the second (normal) pass, the
> function usefulFile() is modified to check the "reqfiles" variable;
> that is, it should keep a file in the file list if it's been required
> by some package in the repo.
Я не понял, эта информация кешируется или каждый запуск genpkglist будет
дампить зависимости всех пакетов?
> (Unfortunately, this patch does not solve all of the problems
> I want it to solve; we have separate repos for i586 and noarch --
> inter-repo file-level dependencies cannot be resolved this way.)
Тогда зачем это изменение?
--
ldv
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [devel] [git update] packages/apt: heads/master
2007-08-11 16:13 ` [devel] [git update] packages/apt: heads/master Dmitry V. Levin
@ 2007-08-13 10:03 ` Alexey Tourbin
0 siblings, 0 replies; 2+ messages in thread
From: Alexey Tourbin @ 2007-08-13 10:03 UTC (permalink / raw)
To: ALT Devel discussion list
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On Sat, Aug 11, 2007 at 08:13:24PM +0400, Dmitry V. Levin wrote:
> > Changelog since `0.5.15lorg2-alt12' follows:
> > commit 30e27b0f1c74b4f67354a6035fae3e210131bca1
> > Author: Alexey Tourbin <at@altlinux>
> > Date: Sat Aug 11 20:01:05 2007 +0400
> >
> > apt-0.5.15lorg2-alt-genpkglist-reqfiles.patch
> >
> > genpkglist strips file lists by default (without --bloat option).
> > It keeps only some "useful files" by using a few ad hoc patterns.
> >
> > This can break file-level dependencies. Consider pkgA requires
> > /usr/lib/foo1/bar, and pkgB owns this file without explicitly
> > providing it. Now if genpkglist strips /usr/lib/foo1/bar
> > from pkgB file list, this is going to be an unmet dependency.
> >
> > This patch changes genpkglist behaviour, so that, when genpkglist
> > is invoked without --bloat option, it first finds all file-level
> > dependencies (something like "rpm -qaR |grep ^/"). This requires
> > a separate pass. The list of file-level dependencies is saved into
> > "reqfiles" global variable. And on the second (normal) pass, the
> > function usefulFile() is modified to check the "reqfiles" variable;
> > that is, it should keep a file in the file list if it's been required
> > by some package in the repo.
>
> Я не понял, эта информация кешируется или каждый запуск genpkglist будет
> дампить зависимости всех пакетов?
Эта информация кешируется, а каждый запуск genpkglist будет дампить
зависимости всех пакетов. :)
Суть в том, что в старом варианте genpkglist без опции --bloat сохраняет
пути в хедере (DIRNAMES, BASENAMES и DIRINDEXES) лишь частично, по
шаблонам usefulFile(). Теперь будет работать в два прохода: первый
прход -- дампит зависимости requires и сохраняет "file-level
dependencies"; на втором (обычном) проходе в usefulFile(), кроме
шаблонов, проверяется также список file-level dependencies.
Если вопрос по скорости работы, то попробуй с опцией --progress.
Но это очень зависит от работы буферного кеша.
> > (Unfortunately, this patch does not solve all of the problems
> > I want it to solve; we have separate repos for i586 and noarch --
> > inter-repo file-level dependencies cannot be resolved this way.)
> Тогда зачем это изменение?
Потому что это правильно. Если уж и обрезать файловые списки, то нужно
это делать с умом. Оптимизация, которая даёт unmet'ы, это неправильная
оптимизация. Данный патч делает всё возможное супротив оптимизаци,
которая чревата анметами. К сожалению, этот патч не может сделать
также и невозможное.
Я вообще считаю что генерировать заведомо незамкнутые репозитарии (как
i586 и noarch у нас) это неправильно. И одноврменно обрезать файловые
листы.
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2007-08-11 16:13 ` [devel] [git update] packages/apt: heads/master Dmitry V. Levin
2007-08-13 10:03 ` Alexey Tourbin
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