update

hosts/common/optional/ephemeral-btrfs.nix

@@ -0,0 +1,5 @@
+{
+
+}: {
+
+}

hosts/orpheus/hardware-configuration.nix

@@ -1,44 +1,93 @@
-# Do not modify this file!  It was generated by ‘nixos-generate-config’
-# and may be overwritten by future invocations.  Please make changes
-# to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
 
-{
-  imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
-    ];
+{inputs, ... }: {
+  imports = [
+      inputs.disko.nixosModules.disko
+      ../common/optional/ephermal-btrfs.nix
+  ];
 
-  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-amd" ];
-  boot.extraModulePackages = [ ];
-
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/cdcfbbfa-ae65-48ff-acfd-1ceba3376f2f";
-      fsType = "ext4";
+  boot = {
+    initrd = {
+      availableKernelModules = [
+        "nvme"
+	"xhci_pci"
+        "ahci"
+	"usb_storage"
+	"usbhid"
+	"sd_mod"
+      ];
+      kernelModules = ["kvm-amd"];
     };
-
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/7C92-2CC6";
-      fsType = "vfat";
-      options = [ "fmask=0077" "dmask=0077" ];
+    loader = {
+      systemd-boot = {
+        enable = true;
+	consoleMode = "max";
+      };
+      efi.canTouchEfiVariables = true;
     };
+  };
 
-  swapDevices =
-    [ { device = "/dev/disk/by-uuid/f8b826c3-629d-4e11-a902-d076d16be33b"; }
-    ];
-
-  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
-  # (the default) this is the recommended approach. When using systemd-networkd it's
-  # still possible to use this option, but it's recommended to use it in conjunction
-  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
-  networking.useDHCP = lib.mkDefault true;
-  # networking.interfaces.enp3s0.useDHCP = lib.mkDefault true;
-  # networking.interfaces.enp4s0.useDHCP = lib.mkDefault true;
-  # networking.interfaces.enp5s0f0np0.useDHCP = lib.mkDefault true;
-  # networking.interfaces.enp5s0f1np1.useDHCP = lib.mkDefault true;
-  # networking.interfaces.wlp6s0.useDHCP = lib.mkDefault true;
-
-  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
-  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+  disko.devices.disk.main = {
+    device = "/dev/nvme0n1";
+    type = "disk";
+    content = {
+      type = "gpt";
+      partions = {
+        boot = {
+	  size = "1M";
+	  type = "EF02";
+	};
+	esp = {
+	  name = "ESP";
+	  size = "512M";
+	  type = "EF00";
+	  content = {
+	    type = "filesystem";
+	    format = "vfat";
+	    mountpoint = "/boot";
+	  };
+	};
+	luks = {
+	  size = "100%";
+	  content = {
+	    name = "root";
+	    type = "luks";
+	    settings.allowDiscards = true;
+	    content = {
+	      type = "btrfs";
+	      postCreateHook = ''
+	        MNTPOINT=$(mktemp -d)
+		mount -t btrfs "$device" "$MNTPOINT"
+		trap 'umount $MNTPOINT; rm -d $MNTPOINT' EXIT
+		btrfs subvolume snapshot -r $MNTPOINT/root $MNTPOINT/root-blank
+	      '';
+	      subvolumes = {
+	        "/root" = {
+		  mountOptions = ["compress=zstd"];
+		  mountpoint = "/";
+		};
+		"/nix" = {
+		  mountOptions = ["compress=zstd" "noatime"];
+		  mountpoint = "/nix";
+		};
+		"/persist" = {
+		  mountOptions = ["compress=zstd"];
+		  mountpoint = "/persist";
+		};
+		"/swap" = {
+		  mountOptions = ["compress=zstd" "noatime"];
+		  mountpoint = "/swap";
+		  swap.swapfile = {
+		    size = "60G";
+		    path = "swapfile";
+		  };
+		};
+	      };
+	    };
+	  };
+	};
+      };
+    };
+  };
 }
+
+