Add Git commit hash to version string

Fixes #1348

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Special color for unavailable items
 - Changelog with all the relevant user-facing changes to the project
 - `info` command line subcommand to show platform specific information
+- Append Git commit hash to version string
 
 ### Changed
 

build.rs

@@ -0,0 +1,19 @@
+use std::process::Command;
+
+fn main() {
+    let mut version = String::from(env!("CARGO_PKG_VERSION"));
+    if let Some(commit_hash) = commit_hash() {
+        version = format!("{version} ({commit_hash})");
+    }
+    println!("cargo:rustc-env=VERSION={version}");
+}
+
+fn commit_hash() -> Option<String> {
+    Command::new("git")
+        .args(["rev-parse", "--short", "HEAD"])
+        .output()
+        .ok()
+        .filter(|output| output.status.success())
+        .and_then(|output| String::from_utf8(output.stdout).ok())
+        .map(|hash| hash.trim().into())
+}

src/lib.rs

@@ -15,7 +15,7 @@ pub fn program_arguments() -> clap::Command {
     };
 
     clap::Command::new("ncspot")
-        .version(env!("CARGO_PKG_VERSION"))
+        .version(env!("VERSION"))
         .author(AUTHOR)
         .about("cross-platform ncurses Spotify client")
         .after_help(backends)