generated from eblume/project-template
Erich Blume
1603b37f74
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The build-time dirty check used `git status --porcelain`, which counts untracked files — including cargo's own `.cargo-ok` marker in a `cargo install --git` checkout — so a clean tagged build reported e.g. `1.0.1 (bcab3c16b-dirty)`. Use `git diff --quiet HEAD` (tracked changes only). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
48 lines
1.8 KiB
Rust
48 lines
1.8 KiB
Rust
//! Build script: capture the short git SHA this build came from so the CLI
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//! surfaces can report `<version> (<sha>)`. The crate version itself comes from
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//! `Cargo.toml` (bumped to the release version on the release tag — see
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//! `.forgejo/workflows/release.yaml`); this only adds the provenance suffix.
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//!
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//! Resolution order: the `HEPH_BUILD_SHA` env override (an escape hatch for
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//! builds with no `.git`, e.g. a source tarball) → `git rev-parse` → `unknown`.
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use std::process::Command;
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fn main() {
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println!("cargo:rerun-if-env-changed=HEPH_BUILD_SHA");
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// Rebuild when HEAD moves so the embedded SHA stays accurate. Best-effort:
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// a missing path here is harmless (cargo just won't watch it).
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println!("cargo:rerun-if-changed=../../.git/HEAD");
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let sha = std::env::var("HEPH_BUILD_SHA")
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.ok()
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.filter(|s| !s.is_empty())
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.or_else(git_short_sha)
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.unwrap_or_else(|| "unknown".to_string());
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println!("cargo:rustc-env=HEPH_BUILD_SHA={sha}");
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}
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fn git_short_sha() -> Option<String> {
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let out = Command::new("git")
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.args(["rev-parse", "--short=9", "HEAD"])
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.output()
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.ok()?;
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if !out.status.success() {
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return None;
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}
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let sha = String::from_utf8(out.stdout).ok()?.trim().to_string();
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if sha.is_empty() {
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return None;
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}
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// Tracked changes only. `git status --porcelain` would also count
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// untracked files — including cargo's own `.cargo-ok` marker in a
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// `cargo install --git` checkout — and falsely tag a clean release build
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// `-dirty`. `git diff --quiet HEAD` exits non-zero only on tracked edits.
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let dirty = !Command::new("git")
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.args(["diff", "--quiet", "HEAD"])
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.status()
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.map(|s| s.success())
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.unwrap_or(true);
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Some(if dirty { format!("{sha}-dirty") } else { sha })
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}
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