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Re: Packaging & installation



Hi,

regarding variants/addons:

My idea for some time now has been to include something in the main repository, either as metadata structure or a package with specific name.

That container could then hold (an example) multiple named kickstarts representing variants and that kickstart could specify subrepositories representing addons (%repo --addon="name"?).

We could also create kickstarts/shell scripts named after previous versions/releases which would be able to do the single shot upgrade tasks (the same stuff we face now with usrmove in f17) from the release they represent.

Having this in repo would allow us to integrate it to multiple places like anaconda itself, preupgrade, ....

Those data could of course also be created as part of comps (so we have translations) or in the form of package dependencies (one super spin package which will bring all spin packages in and does pre/post install changes).

Martin

----- Original Message -----
> Prompted by David Lehman's patch set, I wanted to discuss how we're
> building what we're installing in Fedora and RHEL, and how we might
> need to
> represent that both in the media and in the UI.
> 
> What we've got now exposed at the lowest level (yum/kickstart) and
> supported
> as first-level objects throughout the system:
> 1. packages
> 2. groups (of packages)
> 3. repos (which contain group lists, and packages)
> 
> What we additionally expose only in anaconda, and lose post-install:
> 4. tasks in install classes (lists of groups)
> 
> What we expose in Fedora:
> 5. spins (live ISO via kickstart file)
> 6. 'the install DVD' (a package set via a kickstart file)
> 
> What we expose in RHEL:
> 7. variants (essentially, a spin that's a package set instead of a
> live ISO)
> 8. add-ons (repos, with groups, that apply to specific variants)
> 
> All of these use the comps file, which is a list of groups.
> 
> Now, as we rework anaconda's UI (and backend, per dlehman's patches),
> we
> need to make sure not to break everything horribly.
> 
> In Fedora, spins and the install DVD are driven off of kickstart
> files. This
> was done because it's the only thing pungi and livecd-creator
> supports, and
> because each spin/install DVD is a distinct object that can have its
> own
> kickstart. Anaconda doesn't need to worry about separately consuming
> them,
> as there's only one repo to ever pull from, and the spins are live
> images.
> 
> In RHEL, variants and add-ons are driven off of a different set of
> files,
> for assorted historical reasons. Kickstart files don't directly work
> here
> because they don't allow you to define intermediate objects (add-ons)
> that
> are presented in the installer. Anaconda processes variants and
> add-ons via
> code that reads .treeinfo.
> 
> PROPOSAL GIVEN THE NEW UI
> 
> For reference, the proposed new UI is at:
> 	http://linuxgrrl.com/fedora-ux/Projects/Anaconda/Live%20Prototypes/07-software.svg
> 
> As you'll notice, it contains something that looks like a spin or
> variant on
> the left, and things that could be considered 'add-ons' on the right.
> These
> apply to the choices on the left.
> 
> This would seem to fit nicely into the variants + add-ons model that
> RHEL
> uses. However, there are a couple of problems:
> 
> - The code that parses the variants/add-on information and creates
> the
>   appropriate .treeinfo bits does not exist in Fedora
> 
> This is obviously a simple matter of not-so-simple code.
> 
> - It requires creating a separate set of metadata (the variants file)
> that
>   does not currently exist.
> 
> This is relatively trivial.
> 
> - It can cause skew between the live and not-live spins if this
> variants file
>   falls out of sync with the kickstarts in spin-kickstarts.
> 
> This is ugly - how can we get these to use a single set of data?
> Unfortunately, kickstart's %packages model doesn't give us an easy
> way to
> define a variant and its add-ons in a kickstart file. Ideas?
> 
> Bill
> 
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