Multiple changes:

- deb: can use ppa as dependency
- deb: cross and regular are using parallel nocheck builds
- deb: ephemeral will not pull keyring if no root powers

src/utils/mod.rs

@@ -1 +1,2 @@
 pub mod gpg;
+pub mod root;

src/utils/root.rs

@@ -0,0 +1,15 @@
+//! Root privilege checking utilities
+
+use std::error::Error;
+
+/// Check if the current process has root privileges
+///
+/// # Returns
+/// * `Ok(true)` - Running as root
+/// * `Ok(false)` - Not running as root
+/// * `Err` - Failed to check privileges
+pub fn is_root() -> Result<bool, Box<dyn Error>> {
+    // Check if we're running as root by checking the effective user ID
+    let uid = unsafe { libc::geteuid() };
+    Ok(uid == 0)
+}