Function nix_store_path_name 

pub unsafe extern "C" fn nix_store_path_name(
    store_path: *const StorePath,
    callback: nix_get_string_callback,
    user_data: *mut c_void,
)

Get the path name (e.g. “” in /nix/store/-)

Arguments

• store_path [in] - the path to get the name from
• callback [in] - called with the name
• user_data [in] - arbitrary data, passed to the callback when it’s called.