[gentoo-user] Inter-package dependencies.

[gentoo-user] Inter-package dependencies.

[Grant Taylor]

After the good input that I received in the "Preventing new versions of 
gentoo-sources…" thread, I figured I'd ask this question:

Is there a way to cause ebuild file to limit the version of other 
packages, e.g. net-misc/openvswitch's limiting sys-kernel/gentoo-sources 
to a supported kernel version?

Open vSwitch 2.10 (current non-testing) supports kernel versions 3.10 to 
4.17.  (http://docs.openvswitch.org/en/latest/faq/releases/)

Re: [gentoo-user] Inter-package dependencies.

[aleiphoenix .]

On Thu, Jun 20, 2019 at 11:20 AM Grant Taylor
<gtaylor@gentoo.tnetconsulting.net> wrote:
>
> After the good input that I received in the "Preventing new versions of
> gentoo-sources…" thread, I figured I'd ask this question:
>
> Is there a way to cause ebuild file to limit the version of other
> packages, e.g. net-misc/openvswitch's limiting sys-kernel/gentoo-sources
> to a supported kernel version?
>
> Open vSwitch 2.10 (current non-testing) supports kernel versions 3.10 to
> 4.17.  (http://docs.openvswitch.org/en/latest/faq/releases/)

See some ebuilds like x11-drivers/nvidia-drivers/nvidia-drivers-430.14.ebuild

        if use kernel_linux && kernel_is ge 5 2; then
                ewarn "Gentoo supports kernels which are supported by NVIDIA"
                ewarn "which are limited to the following kernels:"
                ewarn "<sys-kernel/gentoo-sources-5.2"
                ewarn "<sys-kernel/vanilla-sources-5.2"
                ewarn ""
                ewarn "You are free to utilize epatch_user to provide whatever"
                ewarn "support you feel is appropriate, but will not receive"
                ewarn "support as a result of those changes."
                ewarn ""
                ewarn "Do not file a bug report about this."
                ewarn ""
        fi

You could die there :)

Re: [gentoo-user] Inter-package dependencies.

[aleiphoenix .]

On Thu, Jun 20, 2019 at 1:30 PM aleiphoenix . <aleiphoenix@gmail.com> wrote:
> See some ebuilds like x11-drivers/nvidia-drivers/nvidia-drivers-430.14.ebuild
>
>         if use kernel_linux && kernel_is ge 5 2; then
>                 ewarn "Gentoo supports kernels which are supported by NVIDIA"
>                 ewarn "which are limited to the following kernels:"
>                 ewarn "<sys-kernel/gentoo-sources-5.2"
>                 ewarn "<sys-kernel/vanilla-sources-5.2"
>                 ewarn ""
>                 ewarn "You are free to utilize epatch_user to provide whatever"
>                 ewarn "support you feel is appropriate, but will not receive"
>                 ewarn "support as a result of those changes."
>                 ewarn ""
>                 ewarn "Do not file a bug report about this."
>                 ewarn ""
>         fi
>
> You could die there :)

Sorry about the typo, I mean you could use "die" there.

Re: [gentoo-user] Inter-package dependencies.

[Rich Freeman]

On Thu, Jun 20, 2019 at 1:34 AM aleiphoenix . <aleiphoenix@gmail.com> wrote:
>
> On Thu, Jun 20, 2019 at 1:30 PM aleiphoenix . <aleiphoenix@gmail.com> wrote:
> > See some ebuilds like x11-drivers/nvidia-drivers/nvidia-drivers-430.14.ebuild
> >
> >         if use kernel_linux && kernel_is ge 5 2; then
> >                 ewarn "Gentoo supports kernels which are supported by NVIDIA"
> >                 ewarn "which are limited to the following kernels:"
> >                 ewarn "<sys-kernel/gentoo-sources-5.2"
> >                 ewarn "<sys-kernel/vanilla-sources-5.2"
> >                 ewarn ""
> >                 ewarn "You are free to utilize epatch_user to provide whatever"
> >                 ewarn "support you feel is appropriate, but will not receive"
> >                 ewarn "support as a result of those changes."
> >                 ewarn ""
> >                 ewarn "Do not file a bug report about this."
> >                 ewarn ""
> >         fi
> >
> > You could die there :)
>
> Sorry about the typo, I mean you could use "die" there.
>

This will block installing the package if the kernel is invalid, but
will not block installing an invalid kernel later.  Also, this needs
to be done in an appropriate phase.

You probably want to use a blocker for something like this, though
portage doesn't always handle these well, and kernels are also a bit
different as packages go.  A blocker is just a dependency with an !
operator.  Note that this blocks installing that kernel package, not
running that kernel, which is why kernel dependences tend to be
expressed differently.

Personally, in situations where I'm very dependent on kernel series I
just run upstream kernels.  Gentoo barely patches its kernels so
unless you REALLY need the gentoo patches it is pretty trivial to just
sync from the stable repo and pull the appropriate branch for a
longterm series.  I do this for zfs, and have done it in the past for
btrfs, and would do this anytime I needed to pin a particular kernel
series.  You would lose the benefit of any Gentoo QA, but IMO that
benefits you mainly to the degree that you run typical packages, and
you're already deviating from the script.

If your package is in-tree and depends on kernel version you could
file a bug to address this in some way.  If it is in an overlay then
you're on your own.


--
Rich

[gentoo-user]

[jaeyoung lee]

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[gentoo-user] Re: Inter-package dependencies.

[Ian Zimmerman]

On 2019-06-20 13:30, aleiphoenix . wrote:

>                 ewarn "<sys-kernel/vanilla-sources-5.2"

I didn't know about vanilla-sources.  Is there any advantage of using
this package over just downloading tarballs or patchlevel updates from
kernel.org?

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Re: [gentoo-user] Re: Inter-package dependencies.

[Daniel Frey]

On 6/20/19 8:55 AM, Ian Zimmerman wrote:
> On 2019-06-20 13:30, aleiphoenix . wrote:
> 
>>                  ewarn "<sys-kernel/vanilla-sources-5.2"
> 
> I didn't know about vanilla-sources.  Is there any advantage of using
> this package over just downloading tarballs or patchlevel updates from
> kernel.org?
> 

That's a good question. I suppose the only benefit would be having 
portage manage the package. I just looked and all vanilla-sources 
kernels are in testing/unstable.

I would think the only advantage is you wouldn't have to worry about 
portage removing kernel sources you're using. (As they could not be 
reinstallable if the package has been removed from the tree.)

Dan