Function get_available_version 

pub fn get_available_version(name: &str) -> Option<String>

What: Query the repositories for the latest available version of a package.

Inputs:

• name: Package name looked up via pacman -Si.

Output:

• Returns Some(String) with the version string advertised in the repositories.
• Returns None on failure (package not found in repos or command error).

Details:

• Strips revision suffixes (e.g., -1) so comparisons focus on the base semantic version.
• Parses “Version: x.y.z” line from pacman -Si output.
• Sets LC_ALL=C and LANG=C for consistent locale-independent output.
• Gracefully degrades by returning None if pacman is unavailable or package not found.

Example

use arch_toolkit::deps::get_available_version;

if let Some(version) = get_available_version("pacman") {
    println!("Available version: {}", version);
}