: Archive the offline installer and your exact component selection JSON. Qt 5.15.2 will remain usable for decades, but the online installer’s metadata changes.
There are archived mirrors where older offline installers are sometimes hosted for the community, but finding a verified, safe link can be difficult. Users should be cautious of third-party hosting sites that may bundle malware with the installer. qt 5152 offline installer
The process takes 10–20 minutes depending on your drive speed. No internet connection required after the installer starts. : Archive the offline installer and your exact
./qt-opensource-linux-x64-5.15.2.run --script qt-installer-noninteractive.qs --platform minimal Users should be cautious of third-party hosting sites
Official offline installers for version 5.15 and later are generally not provided for free. You may find older versions (like 5.12) on the Qt Archive, but for 5.15.2, you typically must use the Online Installer and select the specific version during the "Select Components" step. 2. Installation Steps