On 15:08 Thu 02 May, Ingo Schwarze wrote:
> Hi Nick,
> 
> Nick Holland wrote on Thu, May 02, 2019 at 08:04:32AM -0400:
> 
> > There is no promise that an upgraded machine will be file-for-file
> > identical to a fresh install.  Here is the list of problems this might
> > cause you, as you can see, it's a long list and quite horrible:
> > 
> > * If you use the same hw for 20 years, you might run out of disk space?
> > 
> > Ok, not very long and not very horrible.
> > 
> > You are trying to solve a non-problem.  And sometimes, 'specially on an
> > upgraded machine, it's great to see how things WERE when the machine was
> > set up.  If you really care, go ahead, delete stuff.
> 
> There is (at least) one slight issue that doesn't have an official
> solution yet: manual pages.
> 
> It might be a good idea to do
> 
>   # rm -rf /usr/share/man/* /usr/X11R6/man/*
> 
> immediately before an upgrade.
> 
> If you don't do that, man(1) might serve you stale manual pages
> afterwards that were removed from the sets, containing information
> that no longer applies.
> 
> All the same, so far, we don't officially recommend it, and even i
> usually forget about it when doing upgrades.
> 
> Should that be automated?  Or are there risks of downsides or side
> effects?  I'm not sure.  Either way, it's hardly a very serious
> problem, it's merely slightly annoying.
> 
> Yours,
>   Ingo

Maybe it's a good idea to note this on the upgrade page? Something like
"the upgrade procedure may leave some files behing; you can manually
clean them up using sysclean package"?

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