[Bazel CI] Error with Label '@@platforms//host:extension.bzl' is invalid because 'host' is not a package #21877
Description
CI: https://buildkite.com/bazel/bazel-at-head-plus-downstream/builds/3769
Platform: Ubuntu, MacOs, Windows
Logs:
ERROR: �[0merror loading package '': Label '@@platforms//host:extension.bzl' is invalid because 'host' is not a package; perhaps you meant to put the colon here: '@@platforms//:host/extension.bzl'?
Culprit: 74c8ca4
CC Greenteam @fweikert @meteorcloudy @Wyverald
Few downstream projects are failing with below error