package: Add package expressions

• Add package expressions

  • Package represents a package to potentially be installed.
  • PackageOr allows an alternate package, in case the first one is not available.

• Use package expressions in Packages component

  • managed_packages() finds all possible packages that could be installed. This is used for the check in the action script.
  • resolve() finds actual packages to be installed. This is used in setup, diagnose, and has_unavailable_packages.

• Fail diagnostic when not able to resolve

  • When a package expression cannot be resolved (i.e. not installable), add a diagnostic failure result with appropriate message.

• minetest: Allow alternate name for 3d armor mod (#2164 (closed))

  • In Bookworm, the minetest-mod-player-3d-armor package is renamed to minetest-mod-3d-armor. Allow either package name to fulfill the requirement, so that the app is installable in both Bullseye and Bookworm.

Tests:

• minetest can be installed in both bullseye and testing.
• Ran other functional tests on bullseye and testing. Confirmed that failures/warnings are not related to this change.

Signed-off-by: James Valleroy jvalleroy@mailbox.org