From 2cbacf93b6df435d341ce10027d99f76a3ef0e3a Mon Sep 17 00:00:00 2001
From: Jordan Holt <jordan@vimium.com>
Date: Sat, 23 Aug 2025 21:39:28 +0100
Subject: [PATCH] hosts/helios: add initial disko config

---
 hosts/helios/default.nix      |   3 +
 hosts/helios/disko-config.nix | 101 ++++++++++++++++++++++++++++++++++
 2 files changed, 104 insertions(+)
 create mode 100644 hosts/helios/disko-config.nix

diff --git a/hosts/helios/default.nix b/hosts/helios/default.nix
index c3a84f4..098c781 100644
--- a/hosts/helios/default.nix
+++ b/hosts/helios/default.nix
@@ -1,4 +1,5 @@
 {
+  inputs,
   pkgs,
   lib,
   ...
@@ -9,7 +10,9 @@ let
 in
 {
   imports = [
+    inputs.disko.nixosModules.disko
     ./hardware-configuration.nix
+    ./disko-config.nix
     ../desktop.nix
     ../../users/jordan
   ];
diff --git a/hosts/helios/disko-config.nix b/hosts/helios/disko-config.nix
new file mode 100644
index 0000000..421268d
--- /dev/null
+++ b/hosts/helios/disko-config.nix
@@ -0,0 +1,101 @@
+{ ... }:
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/disk/by-id/ata-SanDisk_Ultra_II_480GB_162224802391";
+        content = {
+          type = "gpt";
+          partitions = {
+            MBR = {
+              size = "1M";
+              type = "EF02"; # For GRUB MBR
+            };
+            boot = {
+              size = "500M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            zfs = {
+              size = "100%";
+              content = {
+                type = "zfs";
+                pool = "rpool";
+              };
+            };
+          };
+        };
+      };
+    };
+    zpool = {
+      rpool = {
+        type = "zpool";
+        options = {
+          ashift = "12";
+        };
+        rootFsOptions = {
+          compression = "zstd";
+          acltype = "posix";
+          atime = "off";
+          xattr = "sa";
+          dnodesize = "auto";
+          mountpoint = "none";
+          canmount = "off";
+          devices = "off";
+          exec = "off";
+          setuid = "off";
+        };
+        datasets = {
+          "local" = {
+            type = "zfs_fs";
+          };
+          "local/root" = {
+            type = "zfs_fs";
+            mountpoint = "/";
+            options = {
+              canmount = "noauto";
+              mountpoint = "/";
+              exec = "on";
+              setuid = "on";
+            };
+            postCreateHook = "zfs snapshot rpool/local/root@blank";
+          };
+          "local/nix" = {
+            type = "zfs_fs";
+            mountpoint = "/nix";
+            options = {
+              canmount = "noauto";
+              mountpoint = "/nix";
+              exec = "on";
+              setuid = "on";
+            };
+          };
+          "local/state" = {
+            type = "zfs_fs";
+            mountpoint = "/state";
+            options = {
+              canmount = "noauto";
+              mountpoint = "/state";
+            };
+          };
+          "safe" = {
+            type = "zfs_fs";
+          };
+          "safe/persist" = {
+            type = "zfs_fs";
+            mountpoint = "/persist";
+            options = {
+              canmount = "noauto";
+              mountpoint = "/persist";
+            };
+          };
+        };
+      };
+    };
+  };
+}