Build doesn't stop immediately when the user cancels the build

[thii]

Tulsi tries to gracefully exit on SIGINT it receives from Xcode when the user stop the build. This oftentimes makes the next build stuck at waiting for the previous build to finish, when the user starts a new build right after canceling a build.

[DavidGoldman]

What issues are you seeing here? What is making the new build stuck?

[thii]

I saw a "Another command is running. Waiting for it to complete on the server..." for a second, then it stuck at at the "Running /path/to/bazel build ...".

It seemed easier to reproduce if you cancel the build when it's in the middle of building a swift_library target.

[keith]

Thanks for submitting this issue but this tool is being deprecated. Please checkout rules_xcodeproj for a more complete and maintained Xcode integration.