Create thatcher machine with raw image generator

.gitignore

@@ -5,6 +5,7 @@ matrix.json
 result
 result-*
 .direnv
+*.raw
 *.iso
 *.tar
 *.tar.gz

machines/thatcher/README.md

@@ -0,0 +1,5 @@
+# `thatcher`
+
+This is a VPS with glauca.digital.
+
+Since it is a networking device, and networking devices are named after demons, and it is in Britain, it is therefore named after the well-known British demon, Margaret Thatcher.

machines/thatcher/configuration.nix

@@ -0,0 +1,58 @@
+inputs:
+{ config, pkgs, lib, modulesPath, ... }:
+let rootFSUID = "5a713012-c18f-4b4f-b900-137c5739c854";
+in with lib; {
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+    inputs.self.nixosModules.server
+  ];
+
+  astral = {
+    tailscale.enable = mkForce false;
+    monitoring-node.scrapeTransport = "https";
+  };
+
+  networking = {
+    hostName = "thatcher";
+    domain = "h.astrid.tech";
+  };
+
+  fileSystems."/" = mkForce {
+    device = "/dev/disk/by-uuid/${rootFSUID}";
+    autoResize = true;
+    fsType = "ext4";
+  };
+
+  boot = {
+    growPartition = true;
+    kernelParams = [ "console=tty0" "boot.shell_on_fail" ];
+    loader.grub.device = "/dev/vda";
+    loader.timeout = 3;
+  };
+
+  system.build.raw = mkForce
+    (import "${toString modulesPath}/../lib/make-disk-image.nix" {
+      inherit lib config pkgs rootFSUID;
+      name = "thatcher-disk-image";
+      label = "root";
+      diskSize = "auto";
+      format = "raw";
+      copyChannel = false;
+    });
+
+  # This script reproduces, as close as possible, the conditions of the actual machine.
+  # This is useful for testing if the wget -O- | dd of=/dev/vda will work.
+  system.build.test-simple-vm = pkgs.writeShellScriptBin "test-simple-vm" ''
+    set -euxo pipefail
+    dd bs=1M if=${config.system.build.raw}/nixos.img of=test.raw status=progress
+    truncate -s 8G test.raw
+    ${pkgs.qemu}/bin/qemu-kvm \
+      -smp 2 \
+      -m 2G \
+      -drive if=virtio,format=raw,file=test.raw \
+      -netdev user,id=mynet0,net=192.168.76.0/24,dhcpstart=192.168.76.9,hostfwd=tcp::2222-:22 \
+      -net nic,model=e1000,macaddr=00:20:91:84:25:7f,netdev=mynet0
+  '';
+
+  time.timeZone = "US/Pacific";
+}

machines/thatcher/machine-info.nix

@@ -0,0 +1 @@
+{ arch = "x86_64-linux"; }