Document that flatpak override is required for custom MLC paths

[davidhedlund]

Current Behavior

"Failed to create the default MLC files in the selected directory. The MLC path has not changed"

Expected Behavior

There is no documentation that flatpak must be configured before you change the MLC path in Cemu. For example:
sudo flatpak override info.cemu.Cemu --filesystem=~/savedemulatorgames/cemu/.local/share/Cemu/mlc0

or pass the --user argument if you don't use sudo:
flatpak override info.cemu.Cemu --user --filesystem=~/savedemulatorgames/cemu/.local/share/Cemu/mlc0

This can be documented in:

• The FAQ
• The text "Failed to create the default MLC files in the selected directory. The MLC path has not changed" can be extended with this text link "Flatpak requires override configuration", here displayed on a modified screenshot (blue text):
  

Steps to Reproduce

• Navigate to: Options -> General settings
• Click on the "Change" button under "Custom MLC path"

• Select a path that is no associated with the cemu system paths

System Info (Optional)

OS: Ubuntu MATE 22.04
GPU: Any
Cemu: 2.2 flatpak package

[CDarkmatter]

If you're using the flatpak version, you must give Cemu read and write access to this directory, You can use a tool like flatseal to make the process easier, for example if the path of your mlc directory is ~/WiiU/MLC you should add ~/WiiU/MLC:create to your overrides.

[davidhedlund]

If you're using the flatpak version, you must give Cemu read and write access to this directory, You can use a tool like flatseal to make the process easier, for example if the path of your mlc directory is ~/WiiU/MLC you should add ~/WiiU/MLC:create to your overrides.

Thank you very much! 😁 I updated the top post.

[davidhedlund]

@Exzap I completely rewrote this issue from the ground up after CDarkmatter helped me solve it. It should now be relatively straightforward to resolve!