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feat: embed git SHA in version string via build.rs

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Adds a build.rs that runs `git describe --tags --always --dirty` and
sets NUMA_BUILD_VERSION at compile time. A new `numa::version()` helper
returns the build version, falling back to CARGO_PKG_VERSION when git
is unavailable (source tarballs, Docker builds without .git).

Version strings:
  tagged release:      0.13.1
  commits ahead:       0.13.1+a87f907
  uncommitted changes: 0.13.1+a87f907-dirty
  no git:              0.13.1

Replaces all 6 inline env!("CARGO_PKG_VERSION") call sites with the
single version() function.
This commit is contained in:
Razvan Dimescu
2026-04-16 13:02:25 +03:00
parent a87f907d20
commit 0118ab0f44
5 changed files with 62 additions and 9 deletions
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10
src/main.rs
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@@ -72,7 +72,7 @@ async fn main() -> numa::Result<()> {
};
}
"version" | "--version" | "-V" => {
eprintln!("numa {}", env!("CARGO_PKG_VERSION"));
eprintln!("numa {}", numa::version());
return Ok(());
}
"help" | "--help" | "-h" => {
@@ -383,12 +383,10 @@ async fn main() -> numa::Result<()> {
};
// Title row: center within the box
let title = format!(
"{b}NUMA{r} {it}DNS that governs itself{r} {d}v{}{r}",
env!("CARGO_PKG_VERSION")
);
let ver = numa::version();
let title = format!("{b}NUMA{r} {it}DNS that governs itself{r} {d}v{ver}{r}",);
// The title contains ANSI codes; visible length is ~38 chars. Pad to fill the box.
let title_visible_len = 4 + 2 + 24 + 2 + 1 + env!("CARGO_PKG_VERSION").len() + 1;
let title_visible_len = 4 + 2 + 24 + 2 + 1 + ver.len() + 1;
let title_pad = w.saturating_sub(title_visible_len);
eprintln!("\n{o} ╔{bar_top}╗{r}");
eprint!("{o} ║{r} {title}");