Mac: running bazel query ... downloads linux Dart SDK

[kevmoo]

> bazel query ... --curses=no
...........
INFO: Cloning https://github.com/dart-lang/rules_dart: remote: Counting objects (0 / 0)
INFO: Cloning https://github.com/dart-lang/rules_dart: Receiving objects (0 / 701)
INFO: Cloning https://github.com/dart-lang/rules_dart: Receiving objects (91 / 701)
INFO: Cloning https://github.com/dart-lang/rules_dart: Receiving objects (100 / 701)
INFO: Cloning https://github.com/dart-lang/rules_dart: Resolving deltas (2 / 338)
INFO: Cloning https://github.com/dart-lang/rules_dart: Updating references (0 / 4)
INFO: Loading package:
INFO: Loading package: @browser//
INFO: Loading package: @path//
INFO: Downloading from https://storage.googleapis.com/dart-archive/channels/be/raw/141823/sdk/dartsdk-linux-x64-release.zip: 8MB
INFO: Downloading from https://storage.googleapis.com/dart-archive/channels/be/raw/141823/sdk/dartsdk-linux-x64-release.zip: 19MB
INFO: Loading package: @dart_linux_x86_64//
//:main_ddc_serve
//:main_ddc_bundle
//:main_dartium_serve
//:main
//:bazelify_hax

Running something gets the right thing...

> bazel run :main_ddc_serve --curses=no
INFO: Loading...
INFO: Loading package: @local_jdk//
INFO: Loading package: @local_config_cc//
INFO: Loading package: @local_config_xcode//
INFO: Loading complete.  Analyzing...
INFO: Loading package: @io_bazel_rules_dart//dart/build_rules/ext
INFO: Downloading from https://storage.googleapis.com/dart-archive/channels/be/raw/141823/sdk/dartsdk-macos-x64-release.zip: 8MB
INFO: Downloading from https://storage.googleapis.com/dart-archive/channels/be/raw/141823/sdk/dartsdk-macos-x64-release.zip: 20MB
INFO: Loading package: @dart_darwin_x86_64//
...

Not a huge issue, except it'd be nice if we have to download, we get the right one and save some bandwidth