Re: [gentoo-dev] tmpfiles virtual

["Michał Górny" <mgorny@gentoo.org>]

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On Thu, 17 Nov 2016 10:02:25 -0500
Ian Stakenvicius <axs@gentoo.org> wrote:

> On 17/11/16 01:03 AM, Michał Górny wrote:
> > On Wed, 16 Nov 2016 14:21:41 -0600
> > William Hubbs <williamh@gentoo.org> wrote:
> >   
> >> On Wed, Nov 16, 2016 at 01:04:11PM -0500, Ian Stakenvicius wrote:  
> >>> On 16/11/16 12:03 PM, William Hubbs wrote:    
> >>>> On Wed, Nov 16, 2016 at 10:14:02AM -0500, Ian Stakenvicius wrote:    
> >>>>> On 16/11/16 10:08 AM, William Hubbs wrote:    
> >>>>>> opentmpfiles will be updated to install the service scripts which
> >>>>>> will be run when OpenRC boots a system. There is nothing for
> >>>>>> it to do if systemd is used to boot the system.
> >>>>>>
> >>>>>> William
> >>>>>>    
> >>>>>
> >>>>> But there is something to do if openrc is used to boot the system and
> >>>>> systemd is the package providing tmpfiles.d processing via the virtual.    
> >>>>
> >>>> The providers (opentmpfiles and systemd) will not block each other, so
> >>>> the only way this will happen is if you have openrc and systemd
> >>>> installed then forcefully remove opentmpfiles. I think you would not
> >>>> want to do that until you are ready to migrate to booting with systemd.
> >>>>
> >>>> William
> >>>>     
> >>>
> >>> I think I'm having a hard time getting across the issue here...:
> >>>
> >>> 1 - we will have a virtual/tmpfiles that will bring in EITHER systemd,
> >>> or opentmpfiles.
> >>>
> >>> 2 - openrc will NOT depend on opentmpfiles (nor virtual/tmpfiles)
> >>>
> >>> 3 - Applications that install stuff into /usr/lib/tmpfiles.d/ will
> >>> need to depend on virtual/tmpfiles in order to make sure that the
> >>> system has something installed that will process them at boot-time.    
> >>  
> >>  Yes, this will be handled by an RDEPEND in the eclass.  
> > 
> > This is a wrong presumption. The eclass needs the virtual only for
> > pkg_postinst(). While RDEPEND is how we solve this now, it will no
> > longer be necessary in a future EAPI.
> >   
> 
> This makes sense to me as well -- which means every package that
> installs tmpfiles.d/ files should properly RDEPEND on the virtual on
> its own when the functionality arisen from those tmpfiles.d files is
> non-optional.

No, that's now what I meant.

The eclass needs the virtual to create temporary directories once,
in pkg_postinst(). Period. That's how far it is concerned.

If user wants to use a volatile filesystem or any other more complete
tmpfiles.d processing, he needs to use a init that supports that. Which
means either OpenRC with tmpfiles or systemd. Ebuild has nothing to do
with this.

-- 
Best regards,
Michał Górny
<http://dev.gentoo.org/~mgorny/>

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