Warn about apps built against EOL runtimes

src/Core/FlatpakBackend.vala

@@ -498,7 +498,7 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
 
         var added_remotes = new Gee.ArrayList<string> ();
 
-        uint deprecated_dependencies_number = 0;
+        bool runtime_eol = false;
         try {
             var transaction = new Flatpak.Transaction.for_installation (installation, cancellable);
             transaction.add_default_dependency_sources ();
@@ -537,7 +537,7 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
                         var remote_ref = installation.fetch_remote_ref_sync (remote_name, kind, name, arch, branch, cancellable);
 
                         if (remote_ref.get_eol () != null || remote_ref.get_eol_rebase () != null) {
-                            deprecated_dependencies_number++;
+                            runtime_eol = true;
                         }
                     } catch (Error e) {
                         warning ("Error while fetching remote ref: %s", e.message);
@@ -576,7 +576,7 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
         }
 
         if (package != null) {
-            package.deprecated_dependencies_number = deprecated_dependencies_number;
+            package.runtime_eol = runtime_eol;
         }
 
         return download_size;

src/Core/Package.vala

@@ -37,7 +37,7 @@ public class AppCenterCore.Package : Object {
     public const string APPCENTER_PACKAGE_ORIGIN = "appcenter";
     private const string ELEMENTARY_STABLE_PACKAGE_ORIGIN = "elementary-stable-focal-main";
 
-    public uint deprecated_dependencies_number { get; set; default = 0U; }
+    public bool runtime_eol { get; set; default = false; }
 
     /* Note: These are just a stopgap, and are not a replacement for a more
      * fleshed out parental control system. We assume any of these "moderate"

src/Views/AppInfoView.vala

@@ -752,15 +752,11 @@ namespace AppCenter.Views {
             var size = yield package.get_download_size_including_deps ();
             size_label.update (size, package.is_flatpak);
 
-            if (package.deprecated_dependencies_number > 0 && !is_eol_shown) {
+            if (package.runtime_eol && !is_eol_shown) {
                 is_eol_shown = true;
                 var end_of_life = new ContentType (
-                    _("End of Life"),
-                    ngettext (
-                        "Uses a runtime that is no longer supported and does not receive security updates",
-                        "Uses runtimes that are no longer supported and do not receive security updates",
-                        package.deprecated_dependencies_number
-                    ),
+                    _("Outdated"),
+                    _("Built with older technologies that may not work as expected or receive security updates"),
                     "software-update-urgent-symbolic"
                 );