Catalogo .qm nel data dir dell'app (/usr/share/harbour-calibreweb/translations) e caricamento esplicito in main.cpp con risoluzione lingua system via QLocale — il validatore RPM rifiuta /usr/share/translations

rpm/harbour-calibreweb.spec

@@ -26,7 +26,9 @@ in locale.
 %changelog
 * Wed Aug 19 2026 Carlo Baratto <carlo@carlobaratto.it> - 0.2.0-1
 - Selettore lingua nelle impostazioni (System/English/Italiano, applicata al
-  riavvio; QTranslator in main.cpp, pattern quill)
+  riavvio; QTranslator in main.cpp, pattern quill). Catalogo .qm nel data dir
+  dell'app (/usr/share/harbour-calibreweb/translations, il validatore RPM
+  rifiuta /usr/share/translations)
 - Fix 'Close book': pop fino alla prima pagina (popTo(null) non affidabile)
 - Localizzazione: lingua di default inglese (qsTr ovunque), catalogo
   italiano harbour-calibreweb_it.ts/.qm installato in /usr/share/translations
@@ -73,9 +75,10 @@ mkdir -p %{buildroot}%{_datadir}/applications
 install -m 0644 %{SOURCE1} %{buildroot}%{_datadir}/applications/%{name}.desktop
 desktop-file-validate %{buildroot}%{_datadir}/applications/%{name}.desktop || true
 
-# Italian translation: installed from the spec, like the desktop file.
-mkdir -p %{buildroot}/usr/share/translations
-install -m 0644 %{_builddir}/%{name}_it.qm %{buildroot}/usr/share/translations/
+# Italian translation: installed in the app data dir (the RPM validator
+# rejects /usr/share/translations); main.cpp loads it from there.
+mkdir -p %{buildroot}%{_datadir}/%{name}/translations
+install -m 0644 %{_builddir}/%{name}_it.qm %{buildroot}%{_datadir}/%{name}/translations/
 
 %files
 %defattr(-,root,root,-)
@@ -84,4 +87,4 @@ install -m 0644 %{_builddir}/%{name}_it.qm %{buildroot}/usr/share/translations/
 %{_datadir}/icons/hicolor/86x86/apps/%{name}.png
 %{_datadir}/icons/hicolor/108x108/apps/%{name}.png
 %{_datadir}/%{name}/qml
-/usr/share/translations/%{name}*.qm
+%{_datadir}/%{name}/translations/%{name}*.qm

src/main.cpp

@@ -1,5 +1,6 @@
 #include <QDebug>
 #include <QGuiApplication>
+#include <QLocale>
 #include <QQuickView>
 #include <QQmlContext>
 #include <QTranslator>
@@ -16,10 +17,17 @@ Q_DECL_EXPORT int main(int argc, char *argv[])
 
     Settings settings;
 
-    // User-chosen language (Settings -> Language). "system" = Sailfish UI
-    // language (libsailfishapp already installed its translator). "en" =
-    // force English (remove all translators). "it" = force Italian.
-    const QString lang = settings.language();
+    // User-chosen language (Settings -> Language). "system" = follow the
+    // Sailfish UI language. "en" = force English. "it" = force Italian.
+    // The .qm lives in the app data dir (the RPM validator rejects
+    // /usr/share/translations), so libsailfishapp's auto-load cannot be
+    // used: resolve the language here and install our own translator.
+    QString lang = settings.language();
+    if (lang == "system") {
+        const QString sys = QLocale::system().name();
+        lang = sys.startsWith(QLatin1String("it")) ? QStringLiteral("it")
+                                                   : QStringLiteral("en");
+    }
     if (lang == "en" || lang == "it") {
         const QList<QTranslator *> trs = app->findChildren<QTranslator *>();
         foreach (QTranslator *t, trs) {
@@ -29,7 +37,7 @@ Q_DECL_EXPORT int main(int argc, char *argv[])
         if (lang == "it") {
             QTranslator *translator = new QTranslator(app);
             if (translator->load(QStringLiteral("harbour-calibreweb_it"),
-                                 QStringLiteral("/usr/share/translations"))) {
+                                 QStringLiteral("/usr/share/harbour-calibreweb/translations"))) {
                 app->installTranslator(translator);
             } else {
                 qWarning() << "harbour-calibreweb: cannot load harbour-calibreweb_it.qm";