dreieck [1] filed a deletion request for siegfried [2]: The `build()`-function invokes a big download without feedback to the user to a location not unter `makepkg`'s control (namely, `/tmp`). The `source`-array is not used.
[1] https://aur.archlinux.org/account/dreieck/ [2] https://aur.archlinux.org/pkgbase/siegfried/
