Packages with dependency on Flutter SDK cannot be globally activated

[jonasfj]

It'll simply say:

devtools_extensions 0.0.3-wip requires the Flutter SDK, which is unsupported for global executables.

Example: flutter/devtools#6259

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Maybe this is more of a feature request than a bug really. But it explains why people might need to make _cli packages in some cases.

[kenzieschmoll]

If the activation intentionally fails, then maybe the flutter pub global activate output should warn of this. Based on this, it appears that the activation has occurred successfully:

 ~/ flutter pub global activate --source path ~/develop/devtools/packages/devtools_extensions/
Resolving dependencies in /Users/kenzieschmoll/develop/devtools/packages/devtools_extensions/... 
! devtools_app_shared 0.0.1 from path develop/devtools/packages/devtools_app_shared (overridden)
! devtools_shared 3.0.0 from path develop/devtools/packages/devtools_shared (overridden)
  material_color_utilities 0.5.0 (0.8.0 available)
Got dependencies in /Users/kenzieschmoll/develop/devtools/packages/devtools_extensions/!
Package devtools_extensions is currently active at path "/Users/kenzieschmoll/develop/devtools/packages/devtools_extensions".
Activated devtools_extensions 0.0.3-wip at path "/Users/kenzieschmoll/develop/devtools/packages/devtools_extensions".