Re: [gentoo-dev] rfc: virtual/init for init process

[Mike Gilbert]

On Fri, Apr 27, 2018 at 11:45 AM, William Hubbs <williamh@g.o> wrote:
> On Fri, Apr 27, 2018 at 12:48:09AM -0700, Zac Medico wrote:
>> On 04/26/2018 11:34 PM, Kent Fredric wrote:
>> > On Thu, 26 Apr 2018 13:35:15 -0700
>> > Zac Medico <zmedico@g.o> wrote:
>> >
>> >> emerge --depclean, resulting in an unbootable system. Just say-in.
>> >
>> > And depclean being very verbose doesn't do many favours here either.
>> >
>> > ( I regularly do >500 package depcleans and spotting things that aren't meant to be
>> >  culled amongst that list is a bit of a challenge )>
>>
>> At least for system packages, it will show a warning like the one shown
>> here:
>>
>>    https://bugs.gentoo.org/642484#c0
>>
>> Hopefully that message helps those that are paying enough attention.
>> What can we do for those that overlook the warning message, other than
>> give them some rescue instructions for making their system boot again?
>
> Another option suggested to me was to add a use flag to OpenRC that
> pulls in a dependency on virtual/init instead of adding virtual/init to
> @system. The suggestion originally was to add it to rdepend, but that
> doesn't feel right to me since openrc really doesn't have a runtime
> dependency on init, so I'm thinking something like this:
>
> IUSE="... +separate-init"
>
> PDEPEND="
> ...
> separate-init? ( virtual/init )"
>
> Thoughts?

RDEPEND and PDEPEND have essentially the same meaning when there are
no cycles in the dependency graph. The devmanual suggests that PDEPEND
should only be used to avoid cyclic dependencies.

I don't see any reason to prefer PDEPEND over RDEPEND here, and I
don't understand why that would "feel" better. It effectively gets
treated as a runtime dependency either way.