Allow builds from 'git archive' generated tarballs

Author: alerque

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+* enable builds from `git archive` generated source tarballs [[@alerque](https://github.com/alerque)] ([#2187](https://github.com/extrawurst/gitui/pull/2187))
+
 ## [0.26.0+1] - 2024-04-14
 
 **0.26.1** 

build.rs

@@ -1,9 +1,14 @@
 fn get_git_hash() -> String {
 	use std::process::Command;
 
+	// Allow builds from `git archive` generated tarballs if output of `git get-tar-commit-id` is
+	// set in an env var.
+	if let Ok(commit) = std::env::var("TAR_COMMIT_ID") {
+		return commit[..7].to_string();
+	};
 	let commit = Command::new("git")
 		.arg("rev-parse")
-		.arg("--short")
+		.arg("--short=7")
 		.arg("--verify")
 		.arg("HEAD")
 		.output();