From d29deeae56ad2a98d73490d3c2e0bcb5e6a71d11 Mon Sep 17 00:00:00 2001
From: Ryan Lahfa <ryan@dgnum.eu>
Date: Sun, 8 Sep 2024 00:48:01 +0200
Subject: [PATCH] feat(ap01): use levitation for mass rebuilds

To deal with mass rebuild disk space requirements, we can just levitate.

In the future, we will use levitation as a general-purpose mechanism for
partition layout migration, etc.

Signed-off-by: Ryan Lahfa <ryan@dgnum.eu>
---
 machines/ap01/_configuration.nix | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/machines/ap01/_configuration.nix b/machines/ap01/_configuration.nix
index 380b16d..e1e6d2b 100644
--- a/machines/ap01/_configuration.nix
+++ b/machines/ap01/_configuration.nix
@@ -224,6 +224,36 @@ rec {
   defaultProfile.packages = with pkgs; [
     zyxel-bootconfig
     min-collect-garbage
-    mtdutils
+    iwinfo
+    ifwait
+    # Levitate enable us to mass-reinstall the system on the fly.
+    (levitate.override {
+      config = {
+        imports = [
+          "${modulesPath}/network"
+          "${modulesPath}/ssh"
+          "${modulesPath}/hardware.nix"
+          "${modulesPath}/kernel"
+          "${modulesPath}/outputs/tftpboot.nix"
+          "${modulesPath}/outputs.nix"
+        ];
+        services = {
+          # Simplest DHCPv4 we can find.
+          dhcpv4 = svc.network.dhcp.client.build {
+            interface = config.hardware.networkInterfaces.lan;
+          };
+          inherit (config.services) sshd;
+          defaultroute4 = svc.network.route.build {
+            via = "$(output ${services.dhcpv4} router)";
+            target = "default";
+            dependencies = [ config.services.dhcpv4 ];
+          };
+        };
+
+        defaultProfile.packages = [ mtdutils ];
+        # Only keep root, which should inherit from DGN access control's root permissions.
+        users.root = config.users.root;
+      };
+    })
   ];
 }