some fiddling with the display

Cargo.toml

@@ -13,6 +13,9 @@ license = "MIT"
 lazy_static = "0.2.8"
 libc = "0.2.26"
 
+[dev-dependencies]
+itertools = "0.6.0"
+
 [build-dependencies]
 gcc = "0.3.51"
 

examples/list.rs

@@ -1,4 +1,7 @@
 extern crate apt_pkg_native;
+extern crate itertools;
+
+use itertools::Itertools;
 
 use apt_pkg_native::Cache;
 use apt_pkg_native::simple;
@@ -6,6 +9,6 @@ use apt_pkg_native::simple;
 fn main() {
     let mut cache = Cache::get_singleton();
     for item in cache.iter().map(simple::BinaryPackageVersions::new) {
-        println!("{}: {:?}", item.pkg, item.versions);
+        println!("{} [{}]", item.pkg, item.versions.iter().map(|x| format!("{}", x)).join(", "));
     }
 }

src/simple.rs

@@ -62,10 +62,11 @@ impl Version {
 
 impl fmt::Display for Version {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{}:{} in {:?} from {}:{} at {}",
-            self.version,
-            self.arch,
-            self.section,
+        write!(f, "{}:{}", self.version, self.arch)?;
+        if let Some(ref section) = self.section {
+            write!(f, " in {}", section)?;
+        }
+        write!(f, " from {}:{} at {}",
             self.source_package,
             self.source_version,
             self.priority,