test/deps/goldens/dev_dependencies.txt

|-- foo
|   |-- bin
|   |   '-- bar.dart
|   '-- pubspec.yaml
'-- myapp
    '-- pubspec.yaml

$ pub deps --executables
foo:bar

$ pub deps --executables --dev
foo:bar

$ pub deps --json
{
  "root": "myapp",
  "packages": [
    {
      "name": "myapp",
      "version": "0.0.0",
      "kind": "root",
      "source": "root",
      "dependencies": [
        "foo"
      ]
    },
    {
      "name": "foo",
      "version": "1.0.0",
      "kind": "dev",
      "source": "path",
      "dependencies": []
    }
  ],
  "sdks": [
    {
      "name": "Dart",
      "version": "0.1.2+3"
    }
  ],
  "executables": [
    "foo:bar"
  ]
}