Add host jalr-t520

hosts/default.nix

@@ -7,6 +7,9 @@ in
     targetHost = "jalr-k.duckdns.org";
     system = "x86_64-linux";
   };
+  jalr-t520 = {
+    system = "x86_64-linux";
+  };
   cadmium = {
     system = "x86_64-linux";
   };

hosts/jalr-t520/configuration.nix

@@ -0,0 +1,39 @@
+{ lib, pkgs, ... }:
+
+{
+  imports = [
+    ./disko.nix
+    ../../users/jalr
+  ];
+
+  networking = {
+    hostName = "jalr-t520";
+    useDHCP = false;
+  };
+
+  jalr = {
+    bootloader = "systemd-boot";
+    bluetooth.enable = true;
+    gui = {
+      enable = true;
+      sway.enable = true;
+      gnome.enable = true;
+    };
+    workstation.enable = true;
+  };
+
+  hardware.cpu.intel.updateMicrocode = true;
+
+  powerManagement.cpuFreqGovernor = "performance";
+
+  environment.systemPackages = with pkgs; [
+    intel-media-driver
+    libva
+    libva-utils
+    libva1
+  ];
+
+  hardware.graphics.extraPackages = lib.singleton pkgs.vaapiIntel;
+
+  system.stateVersion = "25.05";
+}

hosts/jalr-t520/disko.nix

@@ -0,0 +1,65 @@
+{ config, ... }:
+let
+  cfg = config.disko;
+in
+{
+  disko.devices = {
+    disk = {
+      system = {
+        type = "disk";
+        device = "/dev/disk/by-id/ata-Samsung_SSD_850_EVO_120GB_S21UNSAG200527E";
+        content = {
+          type = "gpt";
+          partitions = {
+            esp = {
+              type = "EF00";
+              size = "1024M";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "uid=0" "gid=0" "fmask=0077" "dmask=0077" "nodev" "nosuid" "noexec" ];
+              };
+            };
+            nixos = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+                extraArgs = [ "-f" ];
+                subvolumes = {
+                  "/root" = {
+                    mountpoint = "/";
+                    mountOptions = [ "compress-force=zstd:1" "noatime" ];
+                  };
+                  "/home" = {
+                    mountpoint = "/home";
+                    mountOptions = [ "compress-force=zstd:1" "noatime" "nodev" "nosuid" ];
+                  };
+                  "/home/.snapshots" = {
+                    mountOptions = [ "compress-force=zstd:1" "noatime" "nodev" "nosuid" ];
+                  };
+                  "/nix" = {
+                    mountpoint = "/nix";
+                    mountOptions = [ "compress-force=zstd:1" "noatime" "noatime" "nodev" ];
+                  };
+                };
+                postCreateHook =
+                  let
+                    inherit (cfg.devices.disk.system.content.partitions.nixos) device;
+                  in
+                  ''
+                    mountpoint="$(mktemp -d)"
+                    mount "${device}" "$mountpoint" -o subvol=/
+                    trap 'umount "$mountpoint"; rmdir "$mountpoint"' EXIT
+                    btrfs subvolume snapshot -r $mountpoint/root $mountpoint/root-blank
+                  '';
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}
+
+