Support sound null-safety broken for Flutter packages

[creativecreatorormaybenot]

For some reason PANA sometimes reports that Flutter packages do not support sound null-safety because of the flutter dependency:

• package that depends on:
• flutter that depends on:
• sky_engine where ui/ui.dart is opting out from null-safety.

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I do not understand what to do about it and I also cannot share an example because it magically disappeared for me after a while or after publishing a new version.

[sigurdm]

That is because until recently ui/ui.dart (in the flutter engine) would have a language version marker:

// @dart=2.10

And pana would consider that opting out of null safety.

This was too simplistic though. Because the dart sdk contains a list of package names that are treated special. Essentially these packages opt in to null-safety already from language version 2.10.

Since then these markers have been removed from flutter. Pana has learnt about those special packages (and pana no longer even considers the contents of dart:ui packages). So life should slowly start getting better :).

[creativecreatorormaybenot]

@sigurdm Just out of curiosity: the PR you mentioned is already almost a week old.
Was it deployed to Pub just recently?

Because I still saw the issue I reported on Sunday :)

[sigurdm]

Which package had this behaviour Sunday - does it still?

It takes some time for new analyses to come alive after a deploy. Until then the old version might still show.

[creativecreatorormaybenot]

@sigurdm Well, it showed it for a while and then stopped showing it.

See wakelock - it showed it for a while when I deployed 0.3.0-nullsafety.0.
I only deployed one null safety version, though. The previous version was from Nov 8 🤔

[sigurdm]

So I guess things are good now?

[creativecreatorormaybenot]

@sigurdm Yes, that is why I agreed with you closing the issue :)

The question was

Just out of curiosity:

Because I was interested in how PANA is deployed to Pub I guess.

[sigurdm]

Pana is upgraded in pub.dev by changes like this: https://github.com/dart-lang/pub-dev/pull/4292/files . That also updates the "runtime version" of pub.dev

A new pub.dev release is deployed, and will do analysis, and store the results as they are done marked with the runtime analysis. This can happen even before traffic is switched.

The "live" version of pub.dev (the one currently serving traffic) will show the newest available analysis data (but not newer than itself)

That means we can switch traffic before all analysis is done.