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let
rootPartition = {
type = "btrfs";
extraArgs = [ "-f" ]; # override existing partition
subvolumes = {
"/root" = {
mountpoint = "/";
mountOptions = [
"subvol=root"
"compress=zstd"
"noatime"
];
};
"/home" = {
mountOptions = [
"subvol=home"
"compress=zstd"
"noatime"
];
mountpoint = "/home";
};
"/nix" = {
mountOptions = [
"subvol=nix"
"compress=zstd"
"noatime"
];
mountpoint = "/nix";
};
"/log" = {
mountpoint = "/var/log";
mountOptions = [
"subvol=log"
"compress=zstd"
"noatime"
];
};
"/lib" = {
mountpoint = "/var/lib";
mountOptions = [
"subvol=lib"
"compress=zstd"
"noatime"
];
};
"/persist" = {
mountpoint = "/var/lib/persist";
mountOptions = [
"subvol=persist"
"compress=zstd"
"noatime"
];
};
"/secrets" = {
mountpoint = "/var/lib/secrets";
mountOptions = [
"subvol=secrets"
"compress=zstd"
"noatime"
];
};
};
};
in
{
disko.devices.disk.vm-disk = {
type = "disk";
device = "/dev/vda";
imageSize = "10G";
content = {
type = "gpt";
partitions = {
ESP = {
priority = 1;
name = "ESP";
label = "boot";
size = "1G";
type = "EF00";
content = {
type = "filesystem";
format = "vfat";
mountpoint = "/boot";
mountOptions = [
"umask=0077"
];
};
};
swap = {
priority = 2;
name = "swap";
label = "swap";
size = "4G";
content = {
type = "swap";
discardPolicy = "both";
postCreateHook = ''
swapon "$device"
'';
};
};
root = {
priority = 3;
size = "100%";
name = "root";
label = "root";
content = rootPartition;
};
};
};
};
fileSystems."/var/lib/persist".neededForBoot = true;
fileSystems."/var/log".neededForBoot = true;
fileSystems."/var/lib".neededForBoot = true;
}
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