[Error] user-provided autoloaded fish_prompt is not loaded

[capfredf]

Please, before opening a bug:

• make sure you've read the documentation.
• Ensure there isn't already an open issue about this.
• Ensure there isn't already a closed/resolved issue about this.

Describe the bug
e2ac35b has introduced a default prompt for fish shell. However, since the function is defined in a configure file, fish shell always load the function and ignore the user-provided autoloaded function fish_prompt, which is usually defined $XDG_CONFIG_HOME/fish/functions/fish_prompt.fish.

To Reproduce
have a fish_prompt.fish with the function defined in it.
launch distrobox with fish shell

Expected behavior
The prompt should be what the user defined, not the default prompt like

📦[$USER@$CONTAINER_ID $CURRENT_DIR]> 

Desktop (please complete the following information):
Aeon
podman version 5.3.2
distrobox: 1.8.0
preinstalled distro package

[injcristianrojas]

I see the same behavior.

Host OS: Fedora Silverblue 41.20250209.0
Distrobox version: 1.8.1.2
Currently using 3 guests (in all of them I see the same behavior using Fish Shell):

• Fedora 41
• Kali Linux
• Ubuntu 24.04

[schuhumi]

So that was some unexpected behaviour that had me clueless for a while....

The file overriding the the prompt in the container is /etc/fish/conf.d/distrobox_config.fish , and due to the order that fish loads them it overrides what the user in their home directory. It seems to me that if a file with the same name exists in both the home directory and /etc, it is loaded from the home directory and skipped in /etc. Hence my dirty workaround is this:

~/.config/fish/conf.d/distrobox_config.fish:

if test -e /etc/fish/conf.d/distrobox_config.fish
	echo "Loading distrobox fish config"
	source /etc/fish/conf.d/distrobox_config.fish
	echo "Overwriting prompt by user's choice"
	source $XDG_CONFIG_HOME/fish/conf.d/fish_prompt.fish
end