[PKG-OpenRC-Debian] Bug#830991: Bug#830991: Summary of needed changes

[Michael Biebl]

Am 16.07.2016 um 14:28 schrieb Benda Xu:
> Michael Biebl <biebl at debian.org> writes:

>>> This is the only reason to stop openrc from providing sysv-rc.  But
>>> systemd-sysv in sid no longer depend on sysv-rc.  No need to do that
>>> anymore, if we don't want to touch jessie.
> 
>> I think dropping that Provides is logically correct and should be done
>> in any case, maybe not for stretch, but in sid for sure.
> 
> In the long run, yes. It was a hack as a drop-in replacement of sysv-rc.

Ok, good we have agreement here.

>>>> <mbiebl_> plus depends on initscripts, to be safe and add Depends:
>>>> initscripts
>>>
>>> I don't think so.
>>>
>>>   initscripts Depends: sysv-rc | file-rc
>>>
>>> and openrc provides sysv-rc.  The dependence relation is already there.
> 
>> Ahem, no. It's the inverse dependency
>> With initscripts no longer being installed by default, nothing will
>> guarantee that initscripts will be installed. 
> 
> I can see sysvinit-core Depends: initscripts (>= 2.88dsf-13.3).

Sure. My point was, that installing openrc should lead to a system
booting with openrc as init. This was my premise.
And sysvinit-core depending on initscripts would therefor not help.

You made clear that this is *not* how you want openrc to be seen.

Afaics, you only want providers of /sbin/init to be treated as init
system. And only those packages need to make sure that the resulting
system is bootable. I acknowledge there is some logic in that.


>> If openrc depends on initscripts to boot a system successfully, it
>> should depend on it.
> 
> Hmm, I think we can express the dependency chain as
> 
>  sysvinit-core -> sysv-rc/openrc -> initscripts
> 
> and drop sysvinit-core -> initscripts.

Well, given your explanations about how you see the purpose of openrc, I
no longer think this change is needed.

So, with Benda's input here, I think what should happen is

a/ Add a Pre-Depends: init-system-helpers to openrc for #829488
b/ Make the Conflicts: openrc in systemd versioned, related to #829488,
as it avoids the switch to file-rc during the dist-upgrade
c1/ Drop the Provides: sysv-rc from openrc
c2/ Update initscripts and sysvinit-core and add openrc as an
alternative to sysv-rc | file-rc
d/ Clarify the openrc package description, make it clear that it is not
supposed to be an init system and that booting with openrc requires a
compatible /sbin/init to be installed.


Benda, is that a fair summary in your POV?

If so, we should probably merge #830991 and #831053 and retitle it,
asking for a clarification in the package description.

I think c/ is related to #829488 as well. systemd in jessie has a
Depends: sysv-rc, as this was supposed to ensure compatible
implementations of invoke-rc.d/update-rc.d are installed. That obviously
did not work out, due to openrc providing sysv-rc.

So I think, dropping Provides: sysv-rc should be done as part of
#829488. Or instead of merging #830991 and #831053 we repurpose one to
deal with Provides: sysv-rc.

Benda, any preferences?


Michael


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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