Use the universal sep.

download.cpp

@@ -124,7 +124,7 @@ QString Download::downloadLocalModelsPath() const {
 void Download::setDownloadLocalModelsPath(const QString &modelPath) {
     QString filePath = (modelPath.startsWith("file://") ?
                         QUrl(modelPath).toLocalFile() : modelPath);
-    QString canonical = QFileInfo(filePath).canonicalFilePath() + QDir::separator();
+    QString canonical = QFileInfo(filePath).canonicalFilePath() + "/";
     if (m_downloadLocalModelsPath != canonical) {
         m_downloadLocalModelsPath = canonical;
         emit downloadLocalModelsPathChanged();
@@ -145,9 +145,9 @@ bool Download::isFirstStart() const
 QString Download::defaultLocalModelsPath() const
 {
     QString localPath = QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation)
-        + QDir::separator();
+        + "/";
     QString testWritePath = localPath + QString("test_write.txt");
-    QString canonicalLocalPath = QFileInfo(localPath).canonicalFilePath() + QDir::separator();
+    QString canonicalLocalPath = QFileInfo(localPath).canonicalFilePath() + "/";
     QDir localDir(localPath);
     if (!localDir.exists()) {
         if (!localDir.mkpath(localPath)) {

llm.cpp

@@ -22,13 +22,13 @@ static LLModel::PromptContext s_ctx;
 static QString modelFilePath(const QString &modelName)
 {
     QString appPath = QCoreApplication::applicationDirPath()
-        + QDir::separator() + "ggml-" + modelName + ".bin";
+        + "/ggml-" + modelName + ".bin";
     QFileInfo infoAppPath(appPath);
     if (infoAppPath.exists())
         return appPath;
 
     QString downloadPath = Download::globalInstance()->downloadLocalModelsPath()
-        + QDir::separator() + "ggml-" + modelName + ".bin";
+        + "/ggml-" + modelName + ".bin";
 
     QFileInfo infoLocalPath(downloadPath);
     if (infoLocalPath.exists())
@@ -469,7 +469,7 @@ bool LLM::checkForUpdates() const
 #endif
 
     QString fileName = QCoreApplication::applicationDirPath()
-        + QDir::separator() + ".." + QDir::separator() + tool;
+        + "/../" + tool;
     if (!QFileInfo::exists(fileName)) {
         qDebug() << "Couldn't find tool at" << fileName << "so cannot check for updates!";
         return false;