How to debug frontend_server

[GvcZhang]

https://github.com/dart-lang/sdk/blob/stable/pkg/frontend_server/lib/frontend_server.dart

When I open frontend_server source code by Android Studio, and execute pub get，the console will print

Resolving dependencies...
Because every version of vm from path depends on kernel from hosted and frontend_server depends on kernel from path, vm from path is forbidden.
So, because frontend_server depends on vm from path, version solving failed.
Process finished with exit code 1

How can i debug it ?

[johnniwinther]

None of the pkg/ folders in the sdk use the pubspec.yaml files to handle their dependencies - they instead use the shared .dart_tool/package_config.json file which is generated by tools/generate_package_config.dart. Normally the package_config.json file should be found automatically when running dart on files in these folder. Otherwise, you can provide it to dart using the --packages= option.

Do note that some Dart files (tests in particular) may assume that the current directory is the sdk root.