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fix Rust build with protoc versions lacking native proto3 optional (#10343)

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pass --experimental_allow_proto3_optional to protoc in the Rust build

filer.proto now carries a proto3 optional field, which the protoc 3.12
shipped in ubuntu-22.04 apt rejects unless this flag is set. Newer
protoc versions still accept the flag, so it is safe everywhere.
This commit is contained in:
Chris Lu
2026-07-15 22:52:17 -07:00
committed by GitHub
parent 5553e7b876
commit 7bfc44432d
1 changed files with 3 additions and 0 deletions
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seaweed-volume/build.rs
+3
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@@ -3,6 +3,9 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
tonic_build::configure()
.build_server(true)
.build_client(true)
// filer.proto uses proto3 optional; older protoc (e.g. 3.12 from ubuntu-22.04 apt)
// rejects it without this flag, and newer protoc still accepts the flag
.protoc_arg("--experimental_allow_proto3_optional")
.file_descriptor_set_path(out_dir.join("seaweed_descriptor.bin"))
.compile_protos(
&[