{ devices = { disk = { sda = { type = "disk"; device = "/dev/sda"; content = { type = "gpt"; partitions = { ESP = { priority = 1; name = "ESP"; start = "1M"; end = "128M"; type = "EF00"; content = { type = "filesystem"; format = "vfat"; mountpoint = "/boot"; }; }; root = { size = "100%"; content = { type = "btrfs"; extraArgs = [ "-f" ]; # Override existing partition # Subvolumes must set a mountpoint in order to be mounted, # unless their parent is mounted subvolumes = { # Subvolume name is different from mountpoint "/root" = { mountpoint = "/"; }; # Subvolume name is the same as the mountpoint "/persistent" = { mountpoint = "/persistent"; }; "/nix" = { mountOptions = [ "compress=zstd" "noatime" ]; mountpoint = "/nix"; }; }; }; }; }; }; }; }; }; }