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This is a result of a small investigation into how to make protols work out of the box with the well-known protobuf types, even though it does not ship them. See https://github.com/NixOS/nixpkgs/pull/465302. The idea is to be able to configure, in compile time, a lowest-priority include path that a distro package could set to make sure, without compromising other sources of include paths, that protols can find the well-known types even when `pkg-config` and `protobuf` are missing from the environment and no paths have been manually configured via CLI or settings. Please advise on the best name for the environment variable.
11 lines
285 B
Rust
11 lines
285 B
Rust
use std::path::Path;
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fn main() {
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if let Some(path) = option_env!("FALLBACK_INCLUDE_PATH") {
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let path = Path::new(path);
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assert!(
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path.is_absolute(),
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"Environment variable FALLBACK_INCLUDE_PATH must be absolute: {path:?}"
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);
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}
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}
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