Ensure the Gazelle binary is built for the right platform #1803
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What type of PR is this?
Bug fix
What package or component does this PR mostly affect?
cmd/gazelle
What does this PR do? Why is it needed?
Right now we pick Gazelle for the "exec" platform. This isn't correct, because we are not running Gazelle as part of a build action. Instead, we are emitting a shell script that invokes Gazelle. That's why we need to make sure it's built for the target platform.
This addresses an issue where Bazel ends up invoking a copy of Gazelle for Linux on my Mac, if I invoke bazel with
--extra_execution_platforms=//my_linux_platform,//my_mac_platform.
Which issues(s) does this PR fix?
n/a
Other notes for review