[Slapt-get-devel] Re[2]: [Slapt-get-user] Filter location and meta
package
Jason Woodward
woodwardj at jaos.org
Mon Nov 8 14:09:46 EST 2004
Hi Kocil,
> Let's analyze the situation again.
> Between flavours, standard and soho, almost all packages are the same,
> except one or two specific packages.
> VL 5.0 standard, for example, has unique packages, e.g:
> - vldoc-5.0-noarch-vl5.tgz (documentation)
> - vlart-5.0-noarch-vl5.tgz (wallpaper etc)
>
> Then VL 5.0 soho has these packages:
> - vldoc-soho-5.0-noarch-vl5.tgz
> - vlart-soho-5.0-noarch-vl5.tgz
>
> When upgrading from VL STANDARD to VL SOHO,
> we want to remove vldoc-5.0 and vlart-5.0, replace it with the soho version.
>
> How is the best way to accomplish it ? I'm thinking of two possible
> solutions:
>
> 1. Using conflicts
> Make two meta packages:
> a. vector-5.0_standard-noarch-vl5.tgz
> required: vldoc-5.0-noarch-vl5.tgz, vlart-5.0-noarch-vl5.tgz
> conflicts: vldoc-soho-5.0-noarch-vl5.tgz, vlart-soho-5.0-noarch-vl5.tgz
>
> b. vector-5.0_soho-noarch-vl5.tgz
> required: vldoc-soho-5.0-noarch-vl5.tgz, vlart-soho-5.0-noarch-vl5.tgz
> conflicts: vldoc-5.0-noarch-vl5.tgz, vlart-5.0-noarch-vl5.tgz
>
> I hope, when upgrading from standard to soho, the conflicts packages will be
> removed.
> It won't ? Oh dear.
I just committed code to cvs to rectify this (0.9.9d forthcoming). Just as in apt-get, if you
--install a package, it will now prompt to remove the conflicting packages.
For example, cups and lprng conflict. You have lprng installed, you --install cups it will
prompt to remove lprng. If you have cups and lprng installed, and use slapt-get that has both
defined as conflicting, it will prompt to remove the package not requested by the command line.
This does not apply to --upgrade and --dist-upgrade. To be even clearer concerning upgrades,
if you specify --install cups it will upgrade cups if cups is installed and a newer version is
available, also removing conflicts since it was requested specifically.
To test this you can edit /var/slapt-get/package_data and setup the CONFLICTS line from both
packages.
> 2. Using same package names, different version:
> In this case, I have to rename the packages as follow:
> vldoc-soho-5.0-noarch-vl5.tgz ==> vldoc-5.0_soho-noarch-vl5.tgz
> vlart-soho-5.0-noarch-vl5.tgz ==> vlart-5.0_soho-noarch-vl5.tgz
>
> Then the flavours meta packages became:
> a. vector-5.0_standard-noarch-vl5.tgz
> required: vldoc-5.0-noarch-vl5.tgz, vlart-5.0-noarch-vl5.tgz
>
> b. vector-5.0_soho-noarch-vl5.tgz
> required: vldoc-5.0_soho-noarch-vl5.tgz, vlart-5.0_soho-noarch-vl5.tgz
>
> So when installing, the vldoc and vlart will be upgraded too.
>
> Which solution do you think will work better ?
I like the first option much better. Changing the package names that like is very unorthodox
and likely to create exceptions and corner cases and result in unexpected behavior.
> > > 3. How to choose vl packages over slack packages ?
> >Most of all the unofficial slack packages available follow a convention of
> >putting the
> >builder's tag after the build number. So slapt-get has been designed to
> >work with this. If
> >you put vl after the 5 in your example, you will get the expected results.
>
> Duh ... that is possible but ... not so elegant.
> May I ask a feature request ?
> Just add on option on slapt-getrc, for example:
>
> PREFERED_RELEASE="REGULAR_EXPRESSION_HERE" # can be [0-9], vl?, or else
>
> Please, please ?.
How is this not so elegant? It is the standard convention everyone else follows.
I don't want to introduce more configuration options, especially for broken naming conventions.
> >
> > > More difficult, Slackware has a problem with cdrtools, so we downgraded
> >it.
> > > Slapt-get always wants to replace the right package like this:
> > >
> > > cdrtools-2.01-i486-1.tgz over cdrtools.1.10-i586-vl5.tgz
> > >
> > > That should not happen, since the older is BETTER.
> >
> >In this case, you can add cdrtools to the excludes list, cdrtools$ then
> >rename your cdrtools to
> >cdrtools-stable-1.10-i585-5vl.tgz. You can also use slack-conflicts to
> >specify cdrtools as conflicting.
>
> Hmmm, I choose the second solution.
> I just need to put the conflicting in one file,
> for example on the distro flavour meta package :
> vector-5.0_standard-noarch-vl5.tgz
> conflicts: cdrtools-2.01-i486-1.tgz
>
> Is that right ?
cdrtools >= 2.01-i486-1
> > > let's prove the capability of slapt-get with fully supportive FTP site.
> >
> >Hey, linuxpackages.net was the first! =]
>
> Really ?
> So why do you not recomend them on the README ? ;-)
I do believe they are mentioned twice in the README, at least twice in the FAQ, and have a
prominent place in the example.slapt-getc file.
take care,
jason
--
Jason Woodward
woodwardj at jaos.org
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