add infallible From<String> for Package

src/backend/pacman.rs

@@ -47,7 +47,7 @@ fn get_explicitly_installed_packages_from_alpm() -> HashSet<String> {
 }
 
 fn convert_to_pacdef_packages(packages: HashSet<String>) -> HashSet<Package> {
-    packages.into_iter().filter_map(Package::try_from).collect()
+    packages.into_iter().map(Package::from).collect()
 }
 
 impl Pacman {

src/package.rs

@@ -14,6 +14,16 @@ fn remove_all_but_package_name(s: &str) -> &str {
         .trim() // remove whitespace
 }
 
+impl From<String> for Package {
+    fn from(value: String) -> Self {
+        let trimmed = remove_all_but_package_name(&value);
+        debug_assert!(!trimmed.is_empty(), "empty package names are not allowed");
+
+        let (name, repo) = Self::split_into_name_and_repo(trimmed);
+        Self { name, repo }
+    }
+}
+
 impl Package {
     fn split_into_name_and_repo(s: &str) -> (String, Option<String>) {
         let mut iter = s.split('/').rev();