"Error: The non-abstract class '_StaticTypeImpl' is missing implementations"

[lukehutch]

I just switched to the master channel of Flutter, and a project that uses the analyzer as a library (Serverpod) reports this error:

$ ../../../.pub-cache/hosted/pub.dev/analyzer-6.5.0/lib/src/summary2/macro_application.dart:1261:7: Error: The non-abstract class '_StaticTypeImpl' is missing implementations for these members:
 - StaticType.asInstanceOf
Try to either
 - provide an implementation,
 - inherit an implementation from a superclass or mixin,
 - mark the class as abstract, or
 - provide a 'noSuchMethod' implementation.

class _StaticTypeImpl implements macro.StaticType {
      ^^^^^^^^^^^^^^^
/opt/flutter/bin/cache/dart-sdk/pkg/_macros/lib/src/api/introspection.dart:119:28: Context: 'StaticType.asInstanceOf' is defined here.
  Future<NamedStaticType?> asInstanceOf(TypeDeclaration declaration);
                           ^^^^^^^^^^^^

• Dart version 3.5.0 (build 3.5.0-214.0.dev)
• Flutter version 3.23.0-13.0.pre.80 on channel master
• Framework revision 5e448f4ce5 (10 hours ago), 2024-06-03 12:44:39 -0700

[otopba]

Same here

[MrLightful]

Have it as well when using localizely/intl_utils.

Flutter 3.24.0 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 80c2e84975 (8 days ago) • 2024-07-30 23:06:49 +0700
Engine • revision b8800d88be
Tools • Dart 3.5.0 • DevTools 2.37.2

[hypen-flutter]

Same here

[bwilkerson]

@scheglov @davidmorgan

[mobile-development-group-com]

Same issue

[mobile-development-group-com]

flutter doctor -v
[✓] Flutter (Channel stable, 3.24.0, on macOS 14.5 23F79 darwin-arm64, locale en-GB)
• Flutter version 3.24.0 on channel stable at /Users/.../Developer/flutter/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 80c2e84975 (12 days ago), 2024-07-30 23:06:49 +0700
• Engine revision b8800d88be
• Dart version 3.5.0
• DevTools version 2.37.2

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0-rc1)
• Android SDK at /Users/.../Library/Android/sdk
• Platform android-34, build-tools 34.0.0-rc1
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.9+0-17.0.9b1087.7-11185874)
• All Android licenses accepted.

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• Xcode at /Applications/Xcode.app/Contents/Developer
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• Android Studio at /Applications/Android Studio.app/Contents
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🔨 https://plugins.jetbrains.com/plugin/9212-flutter
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• Java version OpenJDK Runtime Environment (build 17.0.9+0-17.0.9b1087.7-11185874)

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• No issues found!

[davidmorgan]

I think to use Flutter from main you will need to also use a compatible (latest) analyzer version across anything that's using the analyzer as a library, @jakemac53 is there anything else we can advise people here? Thanks.

[MrLightful]

Have it as well when using localizely/intl_utils.

In my case, I was able to fix the issue by activating a global package again:

flutter pub global activate intl_utils

[jakemac53]

Ah, yeah globally activated tools are an interesting use case... they probably do need to be re-activated to pick up versions that are compatible with the current SDK.

[TheComputerM]

For me, the issue got solved when I cleared the cache with dart pub cache clean and reinstalled packages again.

[bigbott]

dart pub global activate get_cli - fixed issue for me

[jakemac53]

cc @sigurdm @jonasfj just for FYI, I am not sure if there is something reasonable for pub to do here or not.

Basically though, the case here is that the previous version solve for a globally activated package is no longer valid on the new SDK. Should globally activated packages re-validate their solve whenever the SDK is updated? I think that SDK constraints probably won't be respected in this case either?

[jonasfj]

Ah, yeah globally activated tools are an interesting use case... they probably do need to be re-activated to pick up versions that are compatible with the current SDK.

Yes, and no, people could have multiple SDKs installed.

I think today we actually delete the old snapshot and create a new snapshot.
So it's probably possible. But also kind of destructive, since a globally activated package has a pubspec.lock sitting somewhere in the PUB_CACHE and it's a bit surprising that dependencies can just magically upgrade on you.

I think, we do generally want to rethink globally activated packages, so that we just install a precompiled executable. It's less smart, there is no dart:mirrors, but installed things won't break left and right.
Anyways, it's not a thing that prioritized or in the pipeline anytime soon.

[jakemac53]

Transferred this to the pub repo because I do think that is the correct place for it, the packages can't do anything here.

Feel free to do with it as you please though, up to and including closing it as working as intended.

[sigurdm]

Yeah - we should do something here.

I'm assuming that the new analyzer version had valid constraints, and the global run failed to validate them.

edit: see next comment. This is probably not the way to go.

Currently the installed binstub does something equivalent to: dart path/to/snapshot skipping dartdev and not validating the pubspec.lock.

If it instead did something more like dart run the resolution could be validated and redone if no longer valid (eg. the sdk constraints are no longer satisfied).

It would cost a bit in startup time though. Maybe we should build something more specialized.

[sigurdm]

Thinking again we can do something simpler without sacrificing the fast path.

The sdk should recognize that the snapshot is not valid, and return a specific error code.
The binstub then invokes dart global run which is recompiling the snapshot.

dart global run could (and should) validate that the resolution is still good using the ensurePubspecResolved mechanism that dart run also uses.

[sigurdm]

Hmm .. seems we are already validating the sdk constraints:

pub/lib/src/global_packages.dart

Line 402 in d86e3c9

lockFile.sdkConstraints.forEach((sdkName, constraint) {

Not sure what is going wrong here then.

[sigurdm]

I can reproduce this with:

$ flutter channel stable && flutter upgrade --force
[...]
$ flutter --version
Flutter 3.24.3 • channel stable • https://github.com/flutter/flutter
Framework • revision 2663184aa7 (4 weeks ago) • 2024-09-11 16:27:48 -0500
Engine • revision 36335019a8
Tools • Dart 3.5.3 • DevTools 2.37.3
$  flutter pub global activate intl_utils
[...]
Activated intl_utils 2.8.7.
$ cat ~/.pub-cache/global_packages/intl_utils/pubspec.lock 
[...]
sdks:
  dart: ">=3.4.0 <4.0.0"
$ flutter channel stable && flutter upgrade --force
[...]
$ flutter --version
Flutter 3.26.0-1.0.pre.397 • channel master • https://github.com/flutter/flutter
Framework • revision e695cd6e9a (2 hours ago) • 2024-10-08 10:41:09 +0200
Engine • revision 7e8011f3cc
Tools • Dart 3.6.0 (build 3.6.0-330.0.dev) • DevTools 2.40.0
$ flutter pub global run intl_utils:generate
Building package executable... (3.6s)
Failed to build intl_utils:generate:
../../.pub-cache/hosted/pub.dev/analyzer-6.8.0/lib/src/summary2/macro_declarations.dart:57:3: Error: The implicitly called unnamed constructor from 'ConstructorDeclarationImpl' has required parameters.

So it seems like checking the sdk constraint is not enough in this case.
We should do the complete ensureUpToDate, that would discover that we no longer have the right _macros package version (actually that would fail as soon as the dart sdk is new).

[jakemac53]

Yeah, the issue isn't actually the SDK constraint it's the package:macros constraint, which ends up enforcing a certain SDK.

If this is an issue only created by SDK vendored packages, it might matter less.... although it might be an issue for flutter packages also?

[sigurdm]

If this is an issue only created by SDK vendored packages, it might matter less.... although it might be an issue for flutter packages also?

Flutter packages cannot be global activated. So I believe the issue is currently mainly around package:_macros.

[sigurdm]

This was fixed (or at least has a better error message) in #4410

[lukehutch]

Thanks! Although the issue number you cited seems unrelated.

[sigurdm]

Thanks! Although the issue number you cited seems unrelated.

Hmm - I think it is the right one.

Now instead of getting "Error: The non-abstract class '_StaticTypeImpl' is missing implementations" when doing dart pub global run you will now get asked to re-activate the globally activated package. We do this check by testing if the existing resolution is valid given the current sdk.