Phased updates in APT in 21.04

Project Discussion Foundations
26
  1. Always=true
  2. Both unset/false
  3. Never=true

If both are true the behavior is unspecified. The default for each option is false.

Never=false does not imply Always=true. Always true should imply never=false and never=true should imply always=false but in practice you can obviously set both to true and a random one would be respected or it’s an error.

There’s no error reporting where the code was added, so one takes preference, but I don’t recall which one.

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