Turn a Cloud at Cost CentOS-7-64bit server into NixOS

Configure the system ($systemname) you'd like to install (see Configuration below).
Create new server instance (either Custom or cloudpro) using "CentOS-7-64bit". Note the servername (something like c731445864-cloudpro-388922936).
cac_login=xxx cac_key=yyy ./infest-cac-CentOS-7-64bit.sh servername:$servername $systename
Enjoy. (ssh root@$systename)

Configuration

Configure your system in modules/$systemname See modules/cd/default.nix as an example.

Notice that modules/$systemname/networking will be autogenerated (but not committed).

secrets/$systemname/nix/foo can be accessed as <secrets/foo> from within the configuration.

You might want secrets/$systemname/rsync/etc/tinc/retiolum/rsa_key.priv.

You might want secrets/$systemname/nix/hashedPasswords.nix, which looks like

_: { users.extraUsers.root.hashedPassword = "XXX"; }

XXX can be generated with e.g.

mkpasswd -m sha-512 -S $(openssl rand -base64 16 | tr -d '+=' | head -c 16)