EDIT:

I solved the problem by creating the file somewhere editable and creating a link to the file under /home/curious_dolphin/.config/MangoHud, which enables me to configure MangoHud in a text file without using Goverlay. Credit to @j4k3@lemmy.world for the tip. Thanks to all who chimed in.

ORIGINAL POST:

I'm having a hard time configuring MangoHud on Bazzite. I've perused MangoHud's GitHub and Bazzite's documentation, but I'm stuck because once I've created MangoHud.conf, I cannot edit it despite double checking the file permissions. When I attempt to save my changes, it says "Error opening file /home/curious_dolphin/.config/MangoHud/MangoHud.conf: Read-only file system." I get that I'm on an immutable distro, so this is by design, but in this case, how do I configure MangoHud? I'd like to do this without using Goverlay if possible.

Steps to reproduce the issue:

• In Bazzite, open up the file browser, browse to /home/curious_dolphin/.config/, and create the MangoHud directory.
• In the file browser, enter the new MangoHud directory and create the MangoHud config file by right clicking and selecting New Document > MangoHud.conf.
• Right click the new .conf file and select "Open With Text Editor."
• Make desired edits in the text editor.
• Hit Ctrl+S to save my changes.

Result:

"Error opening file: Read-only file system"

I've checked the file permissions. -rw-r--r--. 1 curious_dolphin curious_dolphin 9671 Feb 20 12:22 ./.config/MangoHud/MangoHud.conf.

Can anyone point me in the right direction? Thanks!