It's X aka XDG config directory. If you don't have a
.config directory in your home, create one:
mkdir $HOME/.config
Set the var in this session:
export XDG_CONFIG_HOME="$HOME/.config"
To make it permanent: add this to
~/.profile:
Code:
XDG_CONFIG_HOME="$HOME/.config"; export XDG_CONFIG_HOME
Footnote: I'm not familiar with
bspwm, but
x11-wm/i3 has similar concept i.e.
.config. Read more at
i3(1)