Create new install system with disko

flake.lock

@@ -1,5 +1,25 @@
 {
   "nodes": {
+    "disko": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1749200714,
+        "narHash": "sha256-W8KiJIrVwmf43JOPbbTu5lzq+cmdtRqaNbOsZigjioY=",
+        "owner": "nix-community",
+        "repo": "disko",
+        "rev": "17d08c65c241b1d65b3ddf79e3fac1ddc870b0f6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "disko",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": [
@@ -131,6 +151,7 @@
     },
     "root": {
       "inputs": {
+        "disko": "disko",
         "nixpkgs": "nixpkgs",
         "nixvim": "nixvim"
       }

flake.nix

@@ -7,10 +7,19 @@
       url = "github:nix-community/nixvim";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    disko = {
+      url = "github:nix-community/disko";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
-    { nixpkgs, nixvim, ... }:
+    {
+      nixpkgs,
+      nixvim,
+      disko,
+      ...
+    }:
     {
       nixosConfigurations =
         (
@@ -27,10 +36,12 @@
                   specialArgs = {
                     nixpkgs-flake = nixpkgs;
                     inherit nixvim;
+                    inherit disko;
                   };
                   system = "x86_64-linux";
                   modules = [
                     { networking.hostName = host; }
+                    disko.nixosModules.disko
                     ./hosts/${host}/configuration.nix
                     ./hosts/${host}/state.nix
                   ];
@@ -51,6 +62,7 @@
                   specialArgs = {
                     nixpkgs-flake = nixpkgs;
                     inherit nixvim;
+                    inherit disko;
                   };
                   system = "aarch64-linux";
                   modules = [

hosts/installer-minimal/configuration.nix

@@ -0,0 +1,25 @@
+{
+  pkgs,
+  lib,
+  nixpkgs-flake,
+  ...
+}:
+{
+  imports = [
+    "${nixpkgs-flake}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
+    ../../shared/base.nix
+  ];
+
+  environment.systemPackages = (
+    with pkgs;
+    [
+      cryptsetup
+    ]
+  );
+
+  isoImage.squashfsCompression = "gzip -Xcompression-level 1";
+  networking.networkmanager.enable = lib.mkForce false;
+
+  #Many installs will need this, and it won't hurt either way
+  services.qemuGuest.enable = true;
+}

hosts/installer-minimal/state.nix

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

installer/base.nix

@@ -1,72 +0,0 @@
-{ pkgs, ... }:
-let
-  create-partitions = pkgs.writeScriptBin "create-partitions" ''
-    if [[ $# -ne 3 ]]
-    then
-      echo "Usage: create-partitions <device prefix> <BOOT suffix> <root suffix>"
-      exit
-    fi
-
-    read -p "Erasing disk $1 -- Creating partition $1$2 as BOOT -- Creating partition $1$3 as root -- Are you sure? " -n 1 -r
-    echo
-    if [[ $REPLY =~ ^[Yy]$ ]]
-    then
-      parted $1 -- mklabel gpt
-      parted $1 -- mkpart ESP fat32 1MB 512MB
-      parted $1 -- set 1 esp on
-      parted $1 -- mkpart root ext4 512MB 100%
-    fi
-
-    read -p "Setup root partition encryption?" -n 1 -r
-    echo
-    if [[ $REPLY =~ ^[Yy]$ ]]
-    then
-      cryptsetup luksFormat $1$3
-      if cryptsetup open $1$3 nixos
-      then
-        echo "Encrypted device accessible via /dev/mapper/nixos"
-      fi
-    fi
-  '';
-  create-filesystems = pkgs.writeScriptBin "create-filesystems" ''
-    if [[ $# -ne 2 ]]
-    then
-      echo "Usage: create-filesystems <BOOT partition> <root partition>"
-      exit
-    fi
-
-    mkfs.fat -F 32 -n BOOT $1
-    mkfs.ext4 -L nixos $2
-  '';
-  prep-install = pkgs.writeScriptBin "prep-install" ''
-    mkdir /mnt
-    mount /dev/disk/by-label/nixos /mnt
-    mkdir /mnt/boot
-    mount -o umask=077 /dev/disk/by-label/BOOT /mnt/boot
-
-    nixos-generate-config --root /mnt
-    mv /mnt/etc/nixos/configuration.nix configuration.nix.old
-    curl https://forgejo.sinerva.eu/VSinerva/nixos-conf/raw/branch/main/installer/template-configuration.nix -o /mnt/etc/nixos/configuration.nix
-  '';
-in
-{
-  imports = [
-    <nixpkgs/nixos/modules/installer/cd-dvd/channel.nix>
-    ../base.nix
-  ];
-
-  environment.systemPackages =
-    (with pkgs; [
-      cryptsetup
-    ])
-    ++ [
-      create-partitions
-      create-filesystems
-      prep-install
-    ];
-
-  isoImage.squashfsCompression = "gzip -Xcompression-level 1";
-
-  #Many installs will need this, and it won't hurt either way
-  services.qemuGuest.enable = true;
-}

installer/graphical.nix

@@ -1,7 +0,0 @@
-{ ... }:
-{
-  imports = [
-    <nixpkgs/nixos/modules/installer/cd-dvd/installation-cd-graphical-combined.nix>
-    ./base.nix
-  ];
-}

installer/minimal.nix

@@ -1,9 +0,0 @@
-{ lib, ... }:
-{
-  imports = [
-    <nixpkgs/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix>
-    ./base.nix
-  ];
-
-  networking.networkmanager.enable = lib.mkForce false;
-}

shared/disko/basic-ext4.nix

@@ -0,0 +1,35 @@
+{
+  disko.devices = {
+    disk = {
+      main-disk = {
+        device = "/dev/sda";
+        type = "disk";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              name = "boot";
+              type = "EF00";
+              size = "512M";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+            root = {
+              name = "nixos";
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}