more info in version string, only need one build script

build.rs

@@ -1,8 +1,25 @@
 use std::process::Command;
 
 fn current_git_hash() -> Option<String> {
+    let commit = Command::new("git")
+        .arg("log")
+        .arg("-1")
+        .arg("--pretty=format:%h") // Abbreviated commit hash
+        .current_dir(env!("CARGO_MANIFEST_DIR"))
+        .output();
+
+    if let Ok(commit) = commit {
+        if let Ok(commit) = String::from_utf8(commit.stdout) {
+            return Some(commit)
+        }
+    }
+    None
+}
+
+fn current_git_branch() -> Option<String> {
     let commit = Command::new("git")
                          .arg("rev-parse")
+                         .arg("--abbrev-ref")
                          .arg("HEAD")
                          .output();
     if let Ok(commit) = commit {
@@ -13,8 +30,29 @@ fn current_git_hash() -> Option<String> {
     None
 }
 
+fn is_working_tree_clean() -> bool {
+    let status = Command::new("git")
+        .arg("diff")
+        .arg("--quiet")
+        .arg("--exit-code")
+        .current_dir(env!("CARGO_MANIFEST_DIR"))
+        .status();
+
+    if let Ok(status) = status {
+        status.code() == Some(0)
+    } else {
+        true
+    }
+}
+
 fn main() {
     if let Some(git) = current_git_hash() {
         println!("cargo:rustc-env=GIT_COMMIT={}", git);
     }
+    if let Some(git) = current_git_branch() {
+        println!("cargo:rustc-env=GIT_BRANCH={}", git);
+    }
+    if !is_working_tree_clean() {
+        println!("cargo:rustc-env=GIT_TREE_CLEAN=+");
+    }
 }