limit-filesystem-access.md

1. Install Flatseal from Flathub.

2. Open Arduino IDE V2's entry on Flatseal. Under the Filesystem access section , disable the All user files toggle and scroll down to the Other files setting. Add the directory/directories where you want to access sketches from.
   XDG directories are supported (and recommended). If possible, append :ro to keep access to sketch directories you don't intend to modify read-only.

   

3. Add .arduinoIDE and .arduino15 to the Persistent section.

   

4. (Optional) Move the ~/.arduinoIDE and ~/arduino15 folders to ~/.var/app/cc.arduino.IDE2.

5. Change the Sketchbook location at File > Preferences.