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-rw-r--r--helix-loader/build.rs39
1 files changed, 38 insertions, 1 deletions
diff --git a/helix-loader/build.rs b/helix-loader/build.rs
index c4b89e6b..63548a0c 100644
--- a/helix-loader/build.rs
+++ b/helix-loader/build.rs
@@ -1,4 +1,5 @@
use std::borrow::Cow;
+use std::path::Path;
use std::process::Command;
const VERSION: &str = include_str!("../VERSION");
@@ -11,7 +12,7 @@ fn main() {
.filter(|output| output.status.success())
.and_then(|x| String::from_utf8(x.stdout).ok());
- let version: Cow<_> = match git_hash {
+ let version: Cow<_> = match &git_hash {
Some(git_hash) => format!("{} ({})", VERSION, &git_hash[..8]).into(),
None => VERSION.into(),
};
@@ -23,4 +24,40 @@ fn main() {
println!("cargo:rerun-if-changed=../VERSION");
println!("cargo:rustc-env=VERSION_AND_GIT_HASH={}", version);
+
+ if git_hash.is_none() {
+ return;
+ }
+
+ // we need to revparse because the git dir could be anywhere if you are
+ // using detached worktrees but there is no good way to obtain an OsString
+ // from command output so for now we can't accept non-utf8 paths here
+ // probably rare enouch where it doesn't matter tough we could use gitoxide
+ // here but that would be make it a hard dependency and slow compile times
+ let Some(git_dir): Option<String> = Command::new("git")
+ .args(["rev-parse", "--git-dir"])
+ .output()
+ .ok()
+ .filter(|output| output.status.success())
+ .and_then(|x| String::from_utf8(x.stdout).ok())
+ else{ return; };
+ // If heads starts pointing at something else (different branch)
+ // we need to return
+ let head = Path::new(&git_dir).join("HEAD");
+ if head.exists() {
+ println!("cargo:rerun-if-changed={}", head.display());
+ }
+ // if the thing head points to (branch) itself changes
+ // we need to return
+ let Some(head_ref): Option<String> = Command::new("git")
+ .args(["symbolic-ref", "HEAD"])
+ .output()
+ .ok()
+ .filter(|output| output.status.success())
+ .and_then(|x| String::from_utf8(x.stdout).ok())
+ else{ return; };
+ let head_ref = Path::new(&git_dir).join(head_ref);
+ if head_ref.exists() {
+ println!("cargo:rerun-if-changed={}", head_ref.display());
+ }
}