only display alt implementations if no flavors

web/projects/ui/src/app/pages/marketplace-routes/marketplace-show/marketplace-show.page.ts

@@ -51,14 +51,13 @@ export class MarketplaceShowPage {
 
   readonly flavors$ = this.route.queryParamMap.pipe(
     switchMap(paramMap =>
-      this.marketplaceService
+      this.marketplaceService.getSelectedStore$().pipe(
-        .getSelectedStore$()
-        .pipe(
         map(s =>
           s.packages.filter(
             p => p.id === this.pkgId && p.flavor !== paramMap.get('flavor'),
           ),
         ),
+        filter(p => p.length > 0),
       ),
     ),
   )