아래의 에러는 http library 설치시 발생하는 에러이고, 간략하게 설명하자면
http 1.1.1 라이브러리 버전 이상은 SDK 버전이 3.2.0 이상, 4.0.0 이하이여야 한다
에러의 내용이다.
[{Project}] flutter pub get --no-example
Resolving dependencies...
Error on line 32, column 5 of pubspec.yaml: A dependency may only have one source.
╷
32 │ ┌ sdk: flutter
33 │ │ dependencies:
34 │ │ http: ^1.2.0
│ └──^
╵
exit code 65
--
[{Project}] flutter pub get --no-example
Resolving dependencies...
The current Dart SDK version is 3.1.5.
Because {Project} depends on http >=1.1.1 which requires SDK version >=3.2.0 <4.0.0, version solving failed.
You can try the following suggestion to make the pubspec resolve:
* Consider downgrading your constraint on http: flutter pub add http:^1.1.0
exit code 1
--
[{Project}] flutter pub get --no-example
Resolving dependencies...
The current Dart SDK version is 3.1.5.
Because {Project} depends on http >=1.1.1 which requires SDK version >=3.2.0 <4.0.0, version solving failed.
You can try the following suggestion to make the pubspec resolve:
* Consider downgrading your constraint on http: flutter pub add http:^1.1.0
당연히 dart sdk 의 버전을 올려주면 문제 해결이 되기때문에 간단한 명령어로 dart sdk 버전을 업그레이드 해준다
flutter upgrade 를 입력해주면 아래와 같이, 업그레이드 작업이 수행된다.
>flutter upgrade
Upgrading Flutter to 3.16.8 from 3.13.9 in C:\tools\flutter...
Checking Dart SDK version...
Downloading Dart SDK from Flutter engine 6e2ea58a5ccbefcfadc2d4b7b8045fc6c20ab812...
Expanding downloaded archive with PowerShell...
Building flutter tool...
Running pub upgrade...
Resolving dependencies...
Got dependencies.
Upgrading engine...
Downloading android-arm-profile/windows-x64 tools... 1,039ms
Downloading android-arm-release/windows-x64 tools... 482ms
Downloading android-arm64-profile/windows-x64 tools... 1,009ms
Downloading android-arm64-release/windows-x64 tools... 265ms
Downloading android-x64-profile/windows-x64 tools... 328ms
Downloading android-x64-release/windows-x64 tools... 220ms
Downloading android-x86 tools... 1,691ms
Downloading android-x64 tools... 1,945ms
Downloading android-arm tools... 1,057ms
Downloading android-arm-profile tools... 500ms
Downloading android-arm-release tools... 407ms
Downloading android-arm64 tools... 4.7s
Downloading android-arm64-profile tools... 584ms
Downloading android-arm64-release tools... 447ms
Downloading android-x64-profile tools... 604ms
Downloading android-x64-release tools... 444ms
Downloading android-x86-jit-release tools... 725ms
Downloading Web SDK... 3.5s
Downloading windows-x64-debug/windows-x64-flutter tools... 5.0s
Downloading windows-x64/flutter-cpp-client-wrapper tools... 158ms
Downloading windows-x64-profile/windows-x64-flutter tools... 4.9s
Downloading windows-x64-release/windows-x64-flutter tools... 3.4s
Flutter 3.16.8 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 67457e669f (8 days ago) • 2024-01-16 16:22:29 -0800
Engine • revision 6e2ea58a5c
Tools • Dart 3.2.5 • DevTools 2.28.5