Re: Removing systemd from Buster: everything gets slow
On Wed, Nov 06, 2019 at 01:42:54PM -0500, Greg Wooledge wrote:
> On Wed, Nov 06, 2019 at 09:01:46PM +0300, Reco wrote:
> > That's interesting. libnss-systemd ships a valid postrm script that's
> > supposed to do just that - removing "systemd" entries from
> > nsswitch.conf ($module=systemd, $file=/etc/nsswitch.conf):
> >
> > # we must remove possible [foo=bar] options as well
> > sed -i -r "/(passwd|group):/ s/[[:space:]]+$module\b([[:space:]]*\[[^]]*\])*//" $file
> >
> > But:
> >
> > 1) postrm script bails if it finds that libnss-systemd is still
> > installed, but for another architecture.
> >
> > 2) It invokes "sed", not "/bin/sed", and that's another possible reason
> > for such failure - locally installed /usr/local/bin/sed which does not
> > understand "-i" option or misinterprets that regexp.
>
> Wouldn't a locally installed perl have the same problem if they switched
> it to perl?
It's possible, sure. But consider the complexity of building own perl vs
"ln -s /bin/busybox /usr/local/bin/sed".
> It's also missing the ^ anchor, so it will try to affect other lines
> like "netgroup:" as well as "group:".
That's third thing that postinst does right, and postrm does not.
> But apart from those issues, it doesn't look immediately wrong to me.
> It should be interesting to see exactly what caused the problem.
Same here.
Reco
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