postCreateHook for btrfs about disko HOT 13 CLOSED

{
  disko.devices.disk.main = {
    type = "disk";
    device = "/dev/disk/by-id/nvme-WD_BLACK_SN850X_4000GB_23270P802370";
    content = {
      type = "gpt";
      partitions = {
        ESP = {
	  type = "EF00";
	  size = "500M";
	  priority = 1;
	  content = {
	    type = "filesystem";
	    format = "vfat";
	    mountpoint = "/boot";
	  };
	};
	OS = {
	  size = "100%";
	  content = {
	    type = "btrfs";
	    subvolumes = {
	      "SYSTEM" = {};
	      "SYSTEM/rootfs" = {
	        mountpoint = "/";
	        mountOptions = [ "compress=zstd" "noatime" "nodiratime" ];
                postCreateHook = ''
                  btrfs subvolume snapshot create -r ...
                '';
	      };
	      "SYSTEM/nix" = {
	        mountpoint = "/nix";
	        mountOptions = [ "compress=zstd" "noatime" "nodiratime" ];
	      };
	      "SYSTEM/swap" = {
	        mountpoint = "/swap";
		swap = {
		  swapfile.size = "48G";
		};
  	      };
	      "DATA" = {};
	      "DATA/home" = {
	        mountpoint = "/home";
	        mountOptions = [ "compress=zstd" "noatime" "nodiratime" ];
	      };
	      "DATA/persistence" = {
	        mountpoint = "/persist";
	        mountOptions = [ "compress=zstd" "noatime" "nodiratime" ];
	      };
	    };
	  };
	};
      };
    };
  };

  fileSystems."/persist".neededForBoot = true;
}

{disk ? "nvme0n1", ...}: {
  disko.devices = {
    disk = {
      ${disk} = {
        device = "/dev/${disk}";
        type = "disk";
        content = {
          type = "table";
          format = "gpt";
          partitions = [
            {
              name = "esp";
              start = "1MiB";
              end = "512MiB";
              bootable = true;
              content = {
                type = "filesystem";
                format = "vfat";
                extraArgs = ["-F 32"];
                mountpoint = "/boot";
                mountOptions = [
                  "defaults"
                ];
              };
            }
            {
              name = "root";
              start = "512MiB";
              end = "70%";
              content = {
                type = "luks";
                name = "crypted";
                extraOpenArgs = ["--allow-discards"];
                passwordFile = "/tmp/secret.key";
                content = {
                  type = "lvm_pv";
                  vg = "pool";
                };
              };
            }
          ];
        };
      };
    };
    lvm_vg = {
      pool = {
        type = "lvm_vg";
        lvs = {
          root = {
            size = "100%FREE";
            content = {
              type = "btrfs";
              extraArgs = ["-f"];
              mountOptions = [
                "defaults"
                "lazytime"
              ];
              postCreateHook = ''
                MNTPOINT=$(mktemp -d)
                mount "/dev/mapper/pool-root" "$MNTPOINT" -o subvol=/
                trap 'umount $MNTPOINT; rm -rf $MNTPOINT' EXIT
                btrfs subvolume snapshot -r $MNTPOINT/rootfs $MNTPOINT/rootfs-blank
              '';
              subvolumes = {
                "rootfs" = {
                  mountpoint = "/";
                };
                "/nix" = {
                  mountpoint = "/nix";
                  mountOptions = ["compress=zstd" "noatime"];
                };
                "/home" = {
                  mountpoint = "/home";
                  mountOptions = ["compress=zstd"];
                };
              };
            };
          };
        };
      };
    };
  };
}