Ensure we copy the python executables and don't symlink - on AppImage the link would be invalidated on each run

src/pythoninterfaces/abstractpythoninterface.cpp

@@ -257,7 +257,17 @@ QString AbstractPythonInterface::systemPythonExec()
         deps.close();
     }
 #endif
-    const QString path = QStandardPaths::findExecutable(pythonName);
+
+    // On Windows, Mac and AppImage, use our packaged python
+#if defined(Q_OS_WIN) || defined(Q_OS_MAC)
+    QStringList paths = {qApp->applicationDirPath()};
+#else
+    QStringList paths;
+    if (pCore->packageType() == LinuxPackageType::AppImage) {
+        paths << qApp->applicationDirPath();
+    }
+#endif
+    const QString path = QStandardPaths::findExecutable(pythonName, paths);
     if (path.isEmpty()) {
         setStatus(Broken);
         Q_EMIT setupError(i18n("Cannot find %1, please install it on your system.\n"
@@ -408,7 +418,8 @@ bool AbstractPythonInterface::setupVenv()
     QProcess envProcess;
     // For some reason, this fails in AppImage, but when extracting the Appimage it works...
     // No workaround found yet for AppImage
-    QStringList args = {QStringLiteral("-m"), QStringLiteral("venv"), pluginDir.absoluteFilePath(getVenvPath())};
+    QStringList args = {QStringLiteral("-m"), QStringLiteral("venv"), pluginDir.absoluteFilePath(getVenvPath()), QStringLiteral("--upgrade-deps"),
+                        QStringLiteral("--copies")};
     envProcess.start(pythonExec, args);
     envProcess.waitForStarted();
     envProcess.waitForFinished(-1);