1 files changed, 9 insertions, 0 deletions
diff --git a/cli/build.rs b/cli/build.rs
new file mode 100644
index 00000000..f7b70e7f
--- /dev/null
+++ b/cli/build.rs
@@ -0,0 +1,9 @@
+use std::error::Error;
+use std::process::Command;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let output = Command::new("git").args(&["rev-parse", "HEAD"]).output()?;
+    let hash = std::str::from_utf8(&output.stdout)?;
+    println!("cargo:rustc-env=TYPST_HASH={}", &hash[..8]);
+    Ok(())
+}