This is really painful.
sudo nix --experimental-features 'nix-command flakes' --pure-eval build --profile /nix/var/nix/profiles/system -j 0 --builders-use-substitutes --builders 'ssh://[email protected] x86_64-linux - - - big-parallel kvm' .#nixosConfigurations.xeep.config.system.build.toplevel
warning: Git tree '/home/cole/code/nixcfg' is dirty
error: --- Error -------------------------------------------------------------------- nix
unable to start any build; either increase '--max-jobs' or enable remote builds