Install a system via nixos-anywhere

```bash
❯ nix run github:numtide/nixos-anywhere -- \
  --flake 'git+https://git.hoyer.xyz/harald/nixcfg'.#hostname \
  root@hostname --no-reboot --tty -i $HOME/.ssh/id_ed25519
... enter disk password
❯ ssh -t root@hostname systemd-cryptenroll /dev/luksdev --wipe-slot=tpm2 --tpm2-device=auto --tpm2-pcrs=1,15
```

nixos-rebuild remote git flake

```bash
❯ sudo nixos-rebuild boot --refresh --flake git+https://git.hoyer.xyz/harald/nixcfg
```

home-manager remote git flake

```bash
❯ nix --refresh run 'git+https://git.hoyer.xyz/harald/nixcfg' -- \
  switch -b backup --flake 'git+https://git.hoyer.xyz/harald/nixcfg'
```

`command-not-found` unable to open database

```bash
❯ sudo nix-channel --update
```