On Mon, Dec 01, 2025 at 12:29:56PM -0000, Stuart Henderson wrote:
> On 2025-11-30, Phil Maker <philip.maker@gmail.com> wrote:
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> > FWIW,
> >
> > I did the backgrade `sysupgrade -f -R 7.8` option
> > noting the manual says as you know:
> >
> > -R version Upgrade to a specific release version.
> > Only upgrades from one
> > version to the next are tested. Skipping versions may work.
> > **Downgrading is unlikely to work.**
> >
> > But it worked fine so maybe give it a go after backups.
> >
> > It'd be interesting to know the reasons it commonly fails.
> > Configuration files going backwards would make sense, but
> > are all the binaries downdated consistently?
>
> Some of the libraries that have been updated post-7.8 will still
> be left around and could cause problems. They can be removed but
> that may cause problems too and I'd only consider it on a machine
> with console access.
>
> (If packages were updated while on -current the sane way to
> recover from that after "upgrading backwards" would be to remove
> all packages and reinstall from release/-stable).
This is I wanted to do. Not anymore.
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