On Thu, May 09, 2019 at 04:56:25PM -0400, Neal Gompa wrote:
> On Thu, May 9, 2019 at 10:02 AM Zbigniew Jędrzejewski-Szmek
> <zbyszek@xxxxxxxxx> wrote:
> >
> > Hi,
> >
> > let's drop the requirement and ordering on systemd (as implemented by
> > %systemd_requires) from packages which provide systemd units.
> >
>
> In general, I think this idea has some solid foundation. But I think
> it'd be dangerous to remove any kind of ordering hints from the
> solution, because that means we'd need logic to handle system
> bootstrap that needs to include systemd in DNF
What system bootstrap? Please explain.
> Would transitioning from %{?systemd_requires} to %{?systemd_ordering}
> instead work to do what you want? That still offers the necessary
> ordering hints to ensure systemd is set up early in a large
> transaction that includes everything.
If you are talking about an initial installation in the sense of
'dnf --installroot=... install <long list of packages>', then it
shouldn't matter whether systemd is installed early or late. It is
not started in this transaction, and it should be totally OK (*) to install
it at very end.
(*) As mentioned in my original e-mail, if packages have scriptlets
which use other systemd tools, this does not apply. But in that case those
packages need an explicit dependency.
> I don't relish the potential bugs that would come from losing all of
> those hints in packages that we got from %{?systemd_requires}.
> However, %{?systemd_ordering} would fix that issue.
No, neither should be needed.
Zbyszek
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