Upgrade script: check that installed apps are compatible with the future version before actually starting the upgrade

alexAubin commented 8 months ago

Problem

cf the classic issue of "Upgrade miserably fails" ... share log ... "Yes, app foobar is not compatible ..."
fix https://github.com/YunoHost-Apps/nextcloud_ynh/issues/590 i guess ?

Solution

Implement a check that the installed apps are compatible ... this is not trivial :
- gotta list the installed apps (this part is mostly straightforward)
- substract the "core" apps which are always compatible ... listed in https://github.com/nextcloud/server/blob/master/core/shipped.json
- substract the apps that will indeed be available in the future version ... listed in https://apps.nextcloud.com/api/v1/platform/28.0.0/apps.json (for 28.x)

PR Status

[ ] Code finished and ready to be reviewed/tested
[ ] The fix/enhancement were manually tested (if applicable)

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