Ship Qt's translation together with AppImage.

dist/AppImage/AppImageBuilder.yml

@@ -41,6 +41,7 @@ AppDir:
     - qt515imageformats
     - qt515svg
     - qt515xmlpatterns
+    - qt515translations
     - libpango-1.0-0
   files:
     include: []
@@ -89,6 +90,20 @@ AppDir:
     - opt/qt515/plugins/egldeviceintegrations
     - opt/qt515/plugins/platforminputcontexts
     - opt/qt515/plugins/sqldrivers
+    - /opt/qt515/translations/assistant*.qm
+    - /opt/qt515/translations/designer*.qm
+    - /opt/qt515/translations/linguist*.qm
+    - /opt/qt515/translations/qt_help*.qm
+    - /opt/qt515/translations/qtconnectivity*.qm
+    - /opt/qt515/translations/qtdeclarative*.qm
+    - /opt/qt515/translations/qtlocation*.qm
+    - /opt/qt515/translations/qtmultimedia*.qm
+    - /opt/qt515/translations/qtquickcontrols2*.qm
+    - /opt/qt515/translations/qtquickcontrols*.qm
+    - /opt/qt515/translations/qtscript*.qm
+    - /opt/qt515/translations/qtserialport*.qm
+    - /opt/qt515/translations/qtwebengine*.qm
+    - /opt/qt515/translations/qtwebsockets*.qm
   runtime:
     env:
       APPDIR_LIBRARY_PATH: "$APPDIR:$APPDIR/runtime/compat/:$APPDIR/opt/qt515/lib:$APPDIR/usr/lib/x86_64-linux-gnu:$APPDIR/lib/x86_64-linux-gnu:$APPDIR/usr/lib:$APPDIR/usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders:$APPDIR/usr/local/lib/valentina"

qbs/modules/buildconfig/buildconfig.qbs

@@ -149,7 +149,6 @@ Module {
 
         if (enableAppImage && qbs.targetOS.contains("unix") && !qbs.targetOS.contains("macos"))
             defines.push('APPIMAGE');
-            defines.push('APPIMAGE_QT_TRANSLATIONS="' + FileInfo.joinPaths(qbs.installPrefix, "translations") + '"');
 
         if (enableMultiBundle)
             defines.push('MULTI_BUNDLE');

src/libs/vmisc/vabstractapplication.cpp

@@ -278,7 +278,7 @@ auto VAbstractApplication::QtTranslationsPath(const QString &locale) -> QString
 #if defined(APPIMAGE)
     Q_UNUSED(locale)
     /* Fix path to translations when run inside AppImage. */
-    return AppImageRoot() + APPIMAGE_QT_TRANSLATIONS;
+    return AppImageRoot() + QLibraryPath(QLibraryInfo::TranslationsPath);
 #else
     return translationsPath(locale);
 #endif // defined(APPIMAGE)
@@ -371,7 +371,7 @@ void VAbstractApplication::LoadTranslation(QString locale)
     LoadQM(qtTranslator, QStringLiteral("qt_"), locale, qtQmDir);
     installTranslator(qtTranslator);
 
-#if defined(Q_OS_WIN) && !defined(QBS_BUILD)
+#if (defined(Q_OS_WIN) && !defined(QBS_BUILD)) || defined(APPIMAGE)
     qtxmlTranslator = new QTranslator(this);
     LoadQM(qtxmlTranslator, QStringLiteral("qtxmlpatterns_"), locale, qtQmDir);
     installTranslator(qtxmlTranslator);