> <@cab404:matrix.org> so, about nixos-unstable in your config — just add an unstable channel to system via
> ```
> sudo nix-channel --add nixos-unstable https://nixos.org/channels/nixos-20.03
> ```
> and then use it in your config like that
> ```
> let pkgsUnstable = import <nixos-unstable> {}; in
>   [ pkgsUnstable.nmap pkgsUnstable.tor ]

oops, typo in nix-channel --add. replace nixos-20.03 with nixos-unstable