@happy-kitchen-89482 how did pants manage to download https://binaries.pantsbuild.org/bin/protoc/mac/10.12/2.4.1/protoc but pantsbuild binaries only have

protobuf/mac/.../protoc

?

[tw-mbp-yic pants (1.5.0_temp_5535)]$ ./pants compile examples//tests/java/org/pantsbuild/example/useproto

00:15:11 00:00 [main]
               (To run a reporting server: ./pants server)
00:15:11 00:00   [setup]
00:15:11 00:00     [parse]
               Executing tasks in goals: bootstrap -> imports -> unpack-jars -> deferred-sources -> gen -> jvm-platform-validate -> resolve -> resources -> compile
00:15:12 00:01   [bootstrap]
00:15:12 00:01     [substitute-aliased-targets]
00:15:12 00:01     [jar-dependency-management]
00:15:12 00:01     [bootstrap-jvm-tools]
00:15:12 00:01     [provide-tools-jar]
00:15:12 00:01   [imports]
00:15:12 00:01     [ivy-imports]
00:15:12 00:01   [unpack-jars]
00:15:12 00:01     [unpack-jars]
00:15:12 00:01   [deferred-sources]
00:15:12 00:01     [deferred-sources]
00:15:12 00:01   [gen]
00:15:12 00:01     [antlr-java]
00:15:12 00:01     [antlr-py]
00:15:12 00:01     [jaxb]
00:15:12 00:01     [protoc]
                   Invalidated 1 <http://target.INFO|target.INFO>] Attempting to fetch protoc binary from: <https://binaries.pantsbuild.org/bin/protoc/mac/10.12/2.4.1/protoc> ...
100% .................................................. 1908 KB 1.311s
INFO] Fetched protoc binary from: <https://binaries.pantsbuild.org/bin/protoc/mac/10.12/2.4.1/protoc> .

https://github.com/pantsbuild/binaries/tree/gh-pages/build-support/bin