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[Discuss] --sandbox switch for Ubuntu's do-release-upgrade/update-manager

Tom Metro <tmetro+blu at> writes:

> I was looking to do a "dry run" test with do-release-upgrade to see if a
> system could successfully be upgraded from 12.04 to 14.04 after some
> changes had been made. (An earlier attempted failed to map packages from
> the old release to the new release.)
> test without even writing to the file system.) What I care about is how
> badly will my alternate desktop manager be broken after an upgrade.

This is what Nix (and Guix) is supposed to provide, but designed in from
the start.

Mike Small
smallm at

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