tvl-depot/tvix/build/build.rs

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Rust
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use std::io::Result;
fn main() -> Result<()> {
#[allow(unused_mut)]
let mut builder = tonic_build::configure();
#[cfg(feature = "tonic-reflection")]
{
let out_dir = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap());
let descriptor_path = out_dir.join("tvix.build.v1.bin");
builder = builder.file_descriptor_set_path(descriptor_path);
};
builder
.build_server(true)
.build_client(true)
.emit_rerun_if_changed(false)
.bytes(["."])
.extern_path(".tvix.castore.v1", "::tvix_castore::proto")
.compile(
&[
"tvix/build/protos/build.proto",
"tvix/build/protos/rpc_build.proto",
],
// If we are in running `cargo build` manually, using `../..` works fine,
// but in case we run inside a nix build, we need to instead point PROTO_ROOT
// to a custom tree containing that structure.
&[match std::env::var_os("PROTO_ROOT") {
Some(proto_root) => proto_root.to_str().unwrap().to_owned(),
None => "../..".to_string(),
}],
)
}