nushell/crates/nu-command/build.rs

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Rust
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use std::process::Command;
fn main() -> shadow_rs::SdResult<()> {
// Look up the current Git commit ourselves instead of relying on shadow_rs,
// because shadow_rs does it in a really slow-to-compile way (it builds libgit2)
let hash = get_git_hash().expect("failed to get latest git commit hash");
println!("cargo:rustc-env=NU_COMMIT_HASH={}", hash);
shadow_rs::new()
}
fn get_git_hash() -> Result<String, std::io::Error> {
let out = Command::new("git").args(["rev-parse", "HEAD"]).output()?;
Ok(String::from_utf8(out.stdout)
.expect("could not convert stdout to string")
.trim()
.to_string())
}