flutter pub get --intl: ^0.19.0
Resolving dependencies...
Error on line 42, column 5 of pubspec.yaml: A dependency may only have one source.
╷
42 │ ┌ sdk: flutter
43 │ │ intl: ^0.19.0
44 │ │
45 │ │
46 │ │ # The "flutter_lints" package below contains a set of recommended lints to
47 │ │ # encourage good coding practices. The lint set provided by the package is
48 │ │ # activated in the analysis_options.yaml file located at the root of your
49 │ │ # package. See that file for information about deactivating specific lint
50 │ │ # rules and activating additional ones.
51 │ │ flutter_lints: ^3.0.1
│ └──^
i try to install new version it will show me the date time month
this is my pubspec.yaml file-
name: basics
description: "A new Flutter project."
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
# In Windows, build-name is used as the major, minor, and patch parts
# of the product and file versions while build-number is used as the build suffix.
version: 1.0.0+1
environment:
sdk: '>=3.3.0 <4.0.0'
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.6
dev_dependencies:
flutter_test:
sdk: flutter
intl: ^0.19.0
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^3.0.1
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter packages.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/images/
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
fonts:
- family: FontMain
fonts:
- asset: assets/fonts/BodoniModa-Italic-VariableFont_opsz,wght.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
Bear in mind that you are using a YAML file and the indentation is important here. Now, the intl dependency belongs to the flutter_test parameters' list which is wrong.
Thus, you can resolve the issue by fixing the indentation like this:
dev_dependencies:
flutter_test:
sdk: flutter
intl: ^0.19.0
Also, based on the documentation, you should probably add the intl to the dependencies section rather than dev_dependencies - double-check it:
dependencies:
flutter:
sdk: flutter
intl: ^0.19.0