modules/nixos: add disko-zfs

flake.nix

@@ -161,6 +161,7 @@
           builder = ./modules/nixos/builder.nix;
           community-builder = ./modules/nixos/community-builder;
           disko-raid = ./modules/nixos/disko-raid.nix;
+          disko-zfs = ./modules/nixos/disko-zfs.nix;
           github-org-backup = ./modules/nixos/github-org-backup.nix;
           hercules-ci = ./modules/nixos/hercules-ci;
           hydra = ./modules/nixos/hydra.nix;

modules/nixos/disko-zfs.nix

@@ -0,0 +1,89 @@
+{ inputs, ... }:
+{
+  imports = [
+    inputs.disko.nixosModules.disko
+  ];
+
+  networking.hostId = "deadbeef";
+
+  # this is both efi and bios compatible
+  boot.loader.grub = {
+    enable = true;
+    efiSupport = true;
+    efiInstallAsRemovable = true;
+  };
+
+  disko.devices = {
+    disk = {
+      nvme0n1 = {
+        type = "disk";
+        device = "/dev/nvme0n1";
+        content = {
+          type = "gpt";
+          partitions = {
+            boot = {
+              size = "1M";
+              type = "EF02"; # for grub MBR
+            };
+            ESP = {
+              size = "1G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "nofail" ];
+              };
+            };
+            zfs = {
+              size = "100%";
+              content = {
+                type = "zfs";
+                pool = "zroot";
+              };
+            };
+          };
+        };
+      };
+      nvme1n1 = {
+        type = "disk";
+        device = "/dev/nvme1n1";
+        content = {
+          type = "gpt";
+          partitions = {
+            zfs = {
+              size = "100%";
+              content = {
+                type = "zfs";
+                pool = "zroot";
+              };
+            };
+          };
+        };
+      };
+    };
+    zpool = {
+      zroot = {
+        type = "zpool";
+        options = {
+          ashift = "12";
+        };
+        rootFsOptions = {
+          acltype = "posixacl";
+          atime = "off";
+          compression = "lz4";
+          mountpoint = "none";
+          xattr = "sa";
+          "com.sun:auto-snapshot" = "false";
+        };
+        datasets = {
+          root = {
+            type = "zfs_fs";
+            mountpoint = "/";
+            options.mountpoint = "legacy";
+          };
+        };
+      };
+    };
+  };
+}