Game does not follow XDG_CONFIG_HOME on Linux

[jroyvde]

Validation

• I have checked the Issues page to see if my problem has already been reported
• I have confirmed that this bug does not occur in the original game running on original Xbox 360 hardware

If you have DLC installed, please specify which ones you have.

• Apotos & Shamar Adventure Pack
• Chun-nan Adventure Pack
• Empire City & Adabat Adventure Pack
• Holoska Adventure Pack
• Mazuri Adventure Pack
• Spagonia Adventure Pack

If you have mods enabled, please specify which ones you have.

None.

If you have codes enabled, please specify which ones you have.

None.

Describe the Bug

The game always saves its configuration into ~/.config even if a different config directory is specified with the XDG_CONFIG_HOME environment variable.

Steps to Reproduce

Steps to reproduce the bug:

1. Run the game in an environment where XDG_CONFIG_HOME is set to something other than the default location
2. Observe that configuration and save data is still saved/loaded into/from ~/.config

Expected Behavior

The program should follow the user's settings.

Footage

N/A

Specifications

Fill out the following details:

• CPU: 12 × AMD Ryzen 5 5600 6-Core Processor
• GPU: AMD Radeon RX 5700 XT
• GPU Driver: amdgpu
• OS: Fedora Linux
• Version: 41

[RushingAlien]

This is also not compliant to flatpak, where flatpak sets

• XDG_CONFIG_HOME to ~/.var/app/example.app.id/config; and
• XDG_DATA_HOME to ~/.var/app/example.app.id/data

(flatpak overrides what the user sets to these btw)
I was entirely expecting to find it somewhere in ~/.var/app/io.github.hedge_dev.unleashedrecomp.

Implementation would be for unleased recomp to use XDG_CONFIG_HOME and XDG_DATA_HOME and fallback to ~/.local/share and ~/.config if these env vars are unavailable.