[packagechooser] Build AppStream Pool first

- Don't build a Pool for each PackageItem loaded
 - Do make it load all languages instead of only the current one

src/modules/packagechooser/ItemAppStream.cpp

@@ -96,7 +96,7 @@ fromComponent( AppStream::Component& component )
 }
 
 PackageItem
-fromAppStream( const QVariantMap& item_map )
+fromAppStream( AppStream::Pool& pool, const QVariantMap& item_map )
 {
     QString appstreamId = CalamaresUtils::getString( item_map, "appstream" );
     if ( appstreamId.isEmpty() )
@@ -106,13 +106,6 @@ fromAppStream( const QVariantMap& item_map )
     }
     cDebug() << "Loading AppStream data for" << appstreamId;
 
-    AppStream::Pool pool;
-    if ( !pool.load() )
-    {
-        cWarning() << "AppStream load failed" << pool.lastError();
-        return PackageItem();
-    }
-
     auto itemList = pool.componentsById( appstreamId );
     if ( itemList.count() < 1 )
     {

src/modules/packagechooser/ItemAppStream.h

@@ -21,6 +21,11 @@
 
 #include "PackageModel.h"
 
+namespace AppStream
+{
+class Pool;
+}
+
 /** @brief Loads an item from AppStream data.
  *
  * The @p map must have a key *appstream*. That is used as the
@@ -33,6 +38,6 @@
  * Requires AppStreamQt, if not present will return invalid
  * PackageItems.
  */
-PackageItem fromAppStream( const QVariantMap& map );
+PackageItem fromAppStream( AppStream::Pool& pool, const QVariantMap& map );
 
 #endif

src/modules/packagechooser/PackageChooserViewStep.cpp

@@ -23,6 +23,8 @@
 #endif
 #ifdef HAVE_APPSTREAM
 #include "ItemAppStream.h"
+#include <AppStreamQt/pool.h>
+#include <memory>
 #endif
 #include "PackageChooserPage.h"
 #include "PackageModel.h"
@@ -209,6 +211,11 @@ PackageChooserViewStep::fillModel( const QVariantList& items )
         return;
     }
 
+#ifdef HAVE_APPSTREAM
+    std::unique_ptr< AppStream::Pool > pool;
+    bool poolOk = false;
+#endif
+
     cDebug() << "Loading PackageChooser model items from config";
     int item_index = 0;
     for ( const auto& item_it : items )
@@ -232,7 +239,16 @@ PackageChooserViewStep::fillModel( const QVariantList& items )
         else if ( item_map.contains( "appstream" ) )
         {
 #ifdef HAVE_APPSTREAM
-            m_model->addPackage( fromAppStream( item_map ) );
+            if ( !pool )
+            {
+                pool = std::make_unique< AppStream::Pool >();
+                pool->setLocale( QStringLiteral( "ALL" ) );
+                poolOk = pool->load();
+            }
+            if ( pool && poolOk )
+            {
+                m_model->addPackage( fromAppStream( *pool, item_map ) );
+            }
 #else
             cWarning() << "Loading AppStream data is not supported.";
 #endif