From 0e35a248a10e69fbfe54127010876e7a459c3d9b Mon Sep 17 00:00:00 2001
From: Andrei Zisu <matzipan@gmail.com>
Date: Sun, 12 Nov 2023 13:21:27 +0100
Subject: [PATCH] Add more descriptive build error message

---
 app/build.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/app/build.rs b/app/build.rs
index ebbb061..c9c47e4 100644
--- a/app/build.rs
+++ b/app/build.rs
@@ -5,7 +5,10 @@ use std::env;
 use std::path::PathBuf;
 
 fn main() {
-    let clang_lib_path = env::var("CLANG_LIB_PATH").unwrap();
+    let clang_lib_path = env::var("CLANG_LIB_PATH").expect(
+        "CLANG_LIB_PATH is not set.\
+         Make sure you are building from the flatpak environment",
+    );
     let out_path = env::var("OUT_DIR").unwrap();
     let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();