Unified nix configuration

Switch server: nixos-rebuild switch --target-host root@posixlycorrect.com --use-substitutes --show-trace --flake .\#vps

Switch current machine: sudo nixos-rebuild switch --flake . --show-trace

Switch current home manager: home-manager switch --flake . --show-trace

Update homepage: nix flake update --commit-lock-file --update-input homepage

Update whole flake: nix flake update --commit-lock-file