chat: set search path early

This fixes the issues with installed versions of v2.6.0.

gpt4all-chat/main.cpp

@@ -1,9 +1,8 @@
+#include <QDirIterator>
 #include <QGuiApplication>
 #include <QQmlApplicationEngine>
 #include <QQmlContext>
 
-#include <QDirIterator>
-
 #include "llm.h"
 #include "modellist.h"
 #include "chatlistmodel.h"
@@ -13,6 +12,7 @@
 #include "mysettings.h"
 #include "config.h"
 #include "logger.h"
+#include "../gpt4all-backend/llmodel.h"
 
 int main(int argc, char *argv[])
 {
@@ -25,6 +25,21 @@ int main(int argc, char *argv[])
 
     QGuiApplication app(argc, argv);
     QQmlApplicationEngine engine;
+
+    QString llmodelSearchPaths = QCoreApplication::applicationDirPath();
+    const QString libDir = QCoreApplication::applicationDirPath() + "/../lib/";
+    if (LLM::directoryExists(libDir))
+        llmodelSearchPaths += ";" + libDir;
+#if defined(Q_OS_MAC)
+    const QString binDir = QCoreApplication::applicationDirPath() + "/../../../";
+    if (LLM::directoryExists(binDir))
+        llmodelSearchPaths += ";" + binDir;
+    const QString frameworksDir = QCoreApplication::applicationDirPath() + "/../Frameworks/";
+    if (LLM::directoryExists(frameworksDir))
+        llmodelSearchPaths += ";" + frameworksDir;
+#endif
+    LLModel::Implementation::setImplementationsSearchPath(llmodelSearchPaths.toStdString());
+
     qmlRegisterSingletonInstance("mysettings", 1, 0, "MySettings", MySettings::globalInstance());
     qmlRegisterSingletonInstance("modellist", 1, 0, "ModelList", ModelList::globalInstance());
     qmlRegisterSingletonInstance("chatlistmodel", 1, 0, "ChatListModel", ChatListModel::globalInstance());