analysis_options.yaml the included file not found - flutter

Question

I have a flutter package that uses effective_dart which is working as expected.
(I've explicitly tested this by adding/removing the include and ensure that warnings come and go as expected.)
I have the effective_dart dependency in my pubspec.yaml as follows:
name: sounds
version: 0.9.1
repository: https://github.com/bsutton/sounds
homepage: https://github.com/bsutton/sounds
documentation: https://github.com/bsutton/sounds/wiki
description: Sounds provide a complete api and Widgets for audio playback and recording. Both iOS and Android are supported.
environment:
sdk: '>=2.1.0 <3.0.0'
flutter: '>=1.17.0 <2.0.0'
dependencies:
device_info: '>=0.4.2+4 <2.0.0'
flutter_spinkit: ^4.0.0
meta: ^1.1.8
path: ^1.6.4
path_provider: ^1.6.7
provider: ^4.1.0
sounds_common: ^1.0.1
uuid: ^2.0.4
flutter:
sdk: flutter
dev_dependencies:
pedantic: ^1.9.0
effective_dart: ^1.2.1
dshell: ^1.0.0
e2e: ^0.5.0
lint: ^1.1.1
pub_semver: ^1.4.4
flutter_test:
sdk: flutter
flutter_driver:
sdk: flutter
flutter:
plugin:
platforms:
android:
package: com.bsutton.sounds
pluginClass: Sounds
ios:
pluginClass: Sounds
The analysis_options.yaml contains:
include: package:effective_dart/analysis_options.yaml
analyzer:
errors:
todo: ignore
strong-mode:
implicit-casts: false
implicit-dynamic: false
The problem is that I keep getting a warning about the include not being found.
If I make a trivial edit (add a commented out blank line) to the analysis_options.yaml file the error goes away for a while but invariably returns (generally after a restart of the ide).
I'm using vs code but believe I've seen it in android studio (although I can't reproduce it now).
The error:
The include file package:effective_dart/analysis_options.yaml in /home/bsutton/git/sounds/analysis_options.yaml cannot be found.
The problem is having no material impact on my project but its just really annoying to have a warning always showing up.

Answer 1

Using the command given below is worked for me. Let you try it in the terminal.
flutter pub add --dev flutter_lints
(restart VSCode if the warning is still shown)

Answer 2

This seems to be a problem with sub projects (your example folder). See https://github.com/dart-lang/sdk/issues/42910
You can try to exclude the example in your root analysis_options.yaml:
analyzer:
exclude:
# workaround for https://github.com/dart-lang/sdk/issues/42910
- 'example/**'
And then add a separate analysis_options.yaml to the example.

Answer 3

If someone is still looking for the answer for the same error, this worked for me.
I have added flutter_lints: ^1.0.4 in dependencies in pubspec.yml file.
And the error gone.

Answer 4

you can try this command
flutter pub add --dev flutter_lints
if didn't work use this command
flutter pub upgrade flutter_lints

Answer 5

It show's up cuz the project import the flutter lints (as it says to encourage good coding practices). Usually, there's a hashtag in front of it that makes it functionless. When there was no hashtag, it was activated and found for the flutter lints package.
Solution:
Add hashtag # in front of it.
Add flutter_lints: ^1.0.4 package in pubspec.yaml file.