I wish to add one thing to this Discussion. Mention was made, more than once, that wicd "might" require Systemd.
Besides using Debian Stretch on one system (where I am happily learning Systemd), I use Devuan Ascii (on an older machine with limited ram).
This is "official notification" that wicd works fine on Devuan Ascii, meaning that, as far as I know, nothing in wicd actually references Systemd.
Good luck folks!
Kenneth Parker (Tri-Lingual: Debian, Devuan and Ubuntu. No Windows, however).