From 59fed34c2879553139f4643c3fbae7b235ca2d41 Mon Sep 17 00:00:00 2001
From: Igor Dejanovic <igor.dejanovic@gmail.com>
Date: Fri, 11 Oct 2024 21:19:37 +0200
Subject: [PATCH] fix: `unwrap` panic if build run outside git repo

---
 CHANGELOG.md              | 7 +++++++
 rustemo-compiler/build.rs | 9 +++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ed2d45d..a0c44235 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 # [Unreleased]
 
 
+# [0.6.2] - 2024-10-11
+
+## Fixed
+
+- `unwrap` panic if rustemo-compiler is built outside of git repo (e.g. from crates.io).
+
+
 # [0.6.1] - 2024-10-02
 
 ## Changed
diff --git a/rustemo-compiler/build.rs b/rustemo-compiler/build.rs
index 8e43b0cd..b86ce3e9 100644
--- a/rustemo-compiler/build.rs
+++ b/rustemo-compiler/build.rs
@@ -24,7 +24,12 @@ fn main() {
         .or_else(get_git_hash_if_building_compiler)
         .unwrap_or_default();
 
-    println!("cargo:rustc-env=GIT_HASH=-{}", cut_git_hash(&git_hash));
+    if git_hash.len() > 0 {
+        println!("cargo:rustc-env=GIT_HASH=-{}", cut_git_hash(&git_hash));
+    } else {
+        println!("cargo:rustc-env=GIT_HASH=");
+    }
+
 }
 
 fn get_git_hash_if_building_compiler() -> Option<String> {
@@ -42,7 +47,7 @@ fn get_git_hash_if_building_compiler() -> Option<String> {
 
 fn cut_git_hash(hash: &str) -> &str {
     const CUT_COUNT: usize = 10;
-    let end_idx = hash.char_indices().nth(CUT_COUNT).unwrap().0;
+    let end_idx = hash.char_indices().map(|x| x.0).nth(CUT_COUNT).unwrap_or(hash.len());
     &hash[..end_idx]
 }