Add ISO build

machines/ephemeral/minimal.nix

@@ -0,0 +1,28 @@
+{ pkgs, ... }:
+
+{
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "e1000" "e1000e" "virtio_pci" "r8169" ];
+  boot.kernelParams = [
+    "panic=30" "boot.panic_on_fail" # reboot the machine upon fatal boot issues
+    "console=ttyS0" # enable serial console
+    "console=tty1"
+  ];
+  boot.kernel.sysctl."vm.overcommit_memory" = "1";
+
+  environment.systemPackages = with pkgs; [
+    cryptsetup
+    btrfs-progs
+  ];
+  environment.variables.GC_INITIAL_HEAP_SIZE = "1M";
+
+  networking.useDHCP = true;
+
+  services.openssh = {
+    enable = true;
+    challengeResponseAuthentication = false;
+    passwordAuthentication = false;
+  };
+
+  services.getty.autologinUser = "root";
+  users.users.root.openssh.authorizedKeys.keys = (import ../common/ssh.nix).users;
+}