New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/27235#issuecomment-748116552

Comment:
In footprints, see

```
=> WARNING: kicad-footprints-5.1.8_1: removed empty dir: /usr/share/kicad/modules/Connector_Multicomp.pretty
```

This generates the "error" in #25828. Just add `touch $DESTDIR/usr/share/kicad/modules/Connector_Multicomp.pretty/.empty` to `post_install` and you should be good.