Can't locate Dart SDK

[ds797]

dart run isn't locating my Flutter SDK.
From the base project directory, when I run dart run build_runner build, or even dart run on it's own, I get the following error:

Because (name) depends on flutter_test from sdk which doesn't exist (the Flutter SDK is not available), version solving failed.

I ran flutter pub run build_runner build, which didn't give the same error. However, I'd like to use dart run since flutter pub run is deprecated. Why can't Dart find the Flutter SDK?

Stack Overflow question link (has more information): question

• Dart version and tooling diagnostic info (dart info):

General info

• Dart 3.5.3 (stable) on "linux_x64"
• on linux / Linux 6.11.4-arch2-1 Process tests sometimes cause timeout on Linux #1 SMP PREEMPT_DYNAMIC

Project info

• sdk constraint: '>=3.5.0-56.0.dev <4.0.0'
• dependencies: flutter, hive, isar_flutter_libs, path_provider
• dev_dependencies: flutter_lints, flutter_test

Process info

Memory	CPU	Elapsed time	Command line
66 MB	0.0%	01:49:42	dart devtools --machine --allow-embedding --dtd-uri ws:/uri
561 MB	0.1%	01:49:42	dart language-server --protocol=lsp --client-id=VS-Code --client-version=ver
81 MB	0.0%	01:49:42	dart tooling-daemon --machine
76 MB	0.1%	01:49:42	flutter_tools.snapshot daemon

• Whether you are using Windows, macOS, or Linux (if applicable):
  Linux (Arch)

[dart-github-bot]

Summary: The user is experiencing an issue where dart run cannot locate the Flutter SDK, resulting in a dependency resolution error. They have confirmed that flutter pub run works, but they prefer to use dart run as flutter pub run is deprecated.

[a-siva]

Standalone 'dart' does not make any assumptions about the presence of a flutter sdk for the commands that it supports.
We cannot have 'dart' look for the presence of a Flutter SDK.