Can soft dependencies help to get the proper kernel-devel packages? (Was: Soft- Re: DKMS is not installing the right kernel-devel package)

[Radek Holy]

----- Original Message -----

> From: "Neal Gompa" <ngompa13 at gmail.com>
> To: "Development discussions related to Fedora"
> <devel at lists.fedoraproject.org>
> Sent: Friday, June 12, 2015 2:48:19 PM
> Subject: Re: Can soft dependencies help to get the proper kernel-devel
> packages? (Was: Soft- Re: DKMS is not installing the right kernel-devel
> package)

> On Fri, Jun 12, 2015 at 8:40 AM, Radek Holy < rholy at redhat.com > wrote:

> > ----- Original Message -----
> 
> > > From: "Thorsten Leemhuis" < fedora at leemhuis.info >
> 
> > > To: "Development discussions related to Fedora" <
> > > devel at lists.fedoraproject.org >
> 
> > > Sent: Friday, June 12, 2015 2:19:10 PM
> 
> > > Subject: Can soft dependencies help to get the proper kernel-devel
> > > packages? (Was: Soft- Re: DKMS is not installing
> 
> > > the right kernel-devel package)
> 
> > >
> 
> > > Josh Boyer wrote on 12.06.2015 13:55:
> 
> > > > On Fri, Jun 12, 2015 at 7:24 AM, Neal Gompa < ngompa13 at gmail.com >
> > > > wrote:
> 
> > > > [...]
> 
> > > > As I said, there are no great solutions here.
> 
> > >
> 
> > > A "works most of the time"-solution would be: Install kernel-devel by
> 
> > > default. But I'm not seriously suggesting that, because I fully agree:
> 
> > > It's not a great solution.
> 
> > >
> 
> > > Did anyone(¹) look at soft dependencies in rpm? Can they make our
> 
> > > tools install the kernel-devel packages in the variants that match the
> 
> > > kernel variants installed? I suspect they are made to solve problems
> 
> > > like this, but I'm not sure; and I don't know how far soft dependencies
> 
> > > are supported in out current stack of packaging tools.
> 
> > >
> 
> > > CU
> 
> > > knurd
> 
> > >
> 
> > > (¹) no, I'm not looking at you Josh
> 

> > AFAIK, it is discussed these days whether weak dependencies can be used to
> > express package preferences:
> > https://fedoraproject.org/wiki/PackagingDrafts/WeakDependencies IIRC, there
> > were some concerns but I don't remember what was the conclusion.
> 
> > --
> 
> > Radek Holý
> 
> > Associate Software Engineer
> 
> > Software Management Team
> 
> > Red Hat Czech
> 
> > --
> 
> > devel mailing list
> 
> > devel at lists.fedoraproject.org
> 
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> 
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> 

> ​Soft/weak dependencies are allowed, according to FESCo . The main problem
> would be how to structure it to trigger appropriately for this case. Is it
> even possible to generate a soft dependency at install time?​ Otherwise, how
> do we ensure the "right" one is picked?

> --
> 真実はいつも一つ！/ Always, there's only one truth!

Well, they may be allowed but it's not clear yet whether they can be used for any other purpose then for pointing to packages that enables optional features of the package in question. 
-- 
Radek Holý 
Associate Software Engineer 
Software Management Team 
Red Hat Czech 
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