[wpkg-users] [Bug 188] Support running <remove> action before <upgrade> and <install>

[bugzilla-daemon at bugzilla.wpkg.org]

http://bugzilla.wpkg.org/show_bug.cgi?id=188

Rainer Meier <r.meier at wpkg.org> changed:

           What    |Removed                     |Added
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                 CC|                            |r.meier at wpkg.org

--- Comment #3 from Rainer Meier <r.meier at wpkg.org>  ---
Maybe there is also a confusion how WPKG runs the commands. WPKG already
executes all remove commands before applying any new installations or upgrades
when a synchronization is run.

If an upgrade requires to remove a previous version then command inheritance
might be the answer. This discussion was already held on the mailing list. The
outcome is summarized in Bug 184 and will be part of future WPKG releases.

Command inheritance will allow you to inherit the remove commands as a complete
group when performing an installation or upgrade (typically on upgrade).

If you need to run a custom uninstall procedure there is nothing which prevents
you to specify an upgrade command which performs the actual uninstall. No need
to re-invent the wheel when it's already there. WPKG will execute all commands
in order so feel free to add remove commands to the upgrade nodes too.
At current stage for sure you will probably have to copy some "remove"
instructions and make them re-appear as upgrade instructions but as I said in
future versions you will be able to inherit a complete set of commands.

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