Hi, Guix users!

Recently, I read Guix cookbook and wanna separate some of my packages
into a dedicated profile.

For example, I wanna put match-theme under
~/.guix-profiles.d/theme/theme. and source
~/.guix-profiles.d/theme/theme/etc/profile in ~/.profile.

But my XFCE still unable to find matcha theme. Because there's no
XDG_DATA_DIRS definition in <path to theme profile>/etc/profile.

So, the question is, how to inject a search path specification into a
profile? I may add something like qtbase or glib to add XDG_DATA_DIRS
spec. But it's too heavy, maybe I can add a pseudo package only contains
search path spec to profile?


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Zihao