Hi all, recently I'm getting these warnings every time I activate my system configuration:
```
setting up /etc...
/etc/fonts directory contains user files. Symlinking may fail. at /nix/store/amhpx347b7n6m2bq24siw0qq27w3np8n-setup-etc.pl line 114.
/etc/kbd directory contains user files. Symlinking may fail. at /nix/store/amhpx347b7n6m2bq24siw0qq27w3np8n-setup-etc.pl line 114.
...
```