More verbose err, and setting up /usr/bin /usr/lib to env paths.

src/main.rs

@@ -92,10 +92,10 @@ fn mount_and_check_snaps() -> Result<NyanitState, ExecCommandError> {
 
 fn init_stage() -> Result<NyanitState, ExecCommandError> {
     // mount sysfss
-    nyan_system::prepare_env()?;
+    nyan_system::prepare_env().map_err(|ex| format!("prepare_env error: {}", ex))?;
 
     // check if device is encrypted
-    if nyan_system::bzzpss_dev_encrypted(ROOT_DEV)? {
+    if nyan_system::bzzpss_dev_encrypted(ROOT_DEV).map_err(|ex| format!("Error checking if device is encrypted: {}", ex))? {
         // if encrypted return EnterPassword so used get promted for pass
         return Ok(NyanitState::EnterPassword);
     }
@@ -337,7 +337,10 @@ impl NyanitTUI<'_> {
     }
 }
 
+
+
 fn main() -> ExitCode {
+    nyan_system::set_env_vars_unsafe();
     let mut app = NyanitTUI::new().unwrap();
     app.run().unwrap();
     // Terminal restores automatically when `stdout` (RawTerminal) is dropped

src/nyan_system.rs

@@ -227,6 +227,31 @@ pub fn prepare_env() -> Result<(), ExecCommandError> {
     Ok(())
 }
 
+///
+///  MUST be done before spawning any threads or async runtimes
+pub fn set_env_vars_unsafe() -> () {
+    use std::env;
+    // 1. Define your custom paths
+    let custom_bin = "/usr/bin";
+    let custom_lib = "/usr/lib";
+
+    // 2. Retrieve existing paths to append/prepend (optional but recommended)
+    let existing_path = env::var("PATH").unwrap_or_else(|_| String::new());
+    let existing_ld_path = env::var("LD_LIBRARY_PATH").unwrap_or_else(|_| String::new());
+
+    // 3. Construct new path strings
+    // Prepend custom paths so they take precedence
+    let new_path = format!("{}:{}", custom_bin, existing_path);
+    let new_ld_path = format!("{}:{}", custom_lib, existing_ld_path);
+
+    // 4. Set environment variables (UNSAFE in Rust 2024+)
+    // MUST be done before spawning any threads or async runtimes
+    unsafe {
+        env::set_var("PATH", new_path);
+        env::set_var("LD_LIBRARY_PATH", new_ld_path);
+    }
+}
+
 // # Mount the real root filesystem
 pub fn mount_bee_root(mount_point: &str, dev_name: &str) -> Result<(), ExecCommandError> {
     exec_command("mount", &vec!["-o", "ro", dev_name, mount_point])?;