Hi,
I encountered an issue when installing guix using the installer script on Arch Linux. I'm using a quite simple setup, with only SDDM and sway, so no XDG environment variables are set. Noticed after I've installed guix, things started braking. I tracked it down to the `XDG_DATA_DIRS` environment variable only contained paths to the guix store. The guix.sh script does set `XDG_DATA_DIRS` to /usr/local/share/:/usr/share/ if it's not defined. But it does that after it has sourced the `$GUIX_PROFILE/etc/profile`. Which for me adds some paths to the `XDG_DATA_DIRS` and therefore the default paths are not added. I worked around the issue by adding a script to the /etc/profile.d that sets the `XDG_DATA_DIRS` to `/usr/local/share/:/usr/share/` and made sure it got loaded before the guix.sh script (named it 00-xdg.sh). But might be good to make sure `XDG_DATA_DIRS` is set to the default paths before it sources the profile. To avoid this issue for other users. Thanks -- s/Fred[re]+i[ck]+/Fredrik/g
