From 6529a9248fae3e627ef85d2eaa29c68abc771efb Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Tue, 29 Apr 2025 09:49:35 +0200
Subject: ...

---
 hosts/vidhar/default.nix              |   2 +-
 hosts/vidhar/network/dhcp/default.nix | 106 +++++++++++++++++++++++++++-------
 2 files changed, 85 insertions(+), 23 deletions(-)

(limited to 'hosts')

diff --git a/hosts/vidhar/default.nix b/hosts/vidhar/default.nix
index 90ab40dd..1af9c5e0 100644
--- a/hosts/vidhar/default.nix
+++ b/hosts/vidhar/default.nix
@@ -387,7 +387,7 @@ with lib;
       algorithm = "zstd";
     };
 
-    environment.systemPackages = with pkgs; [iotop vmtouch];
+    environment.systemPackages = with pkgs; [iotop vmtouch inetutils];
 
     systemd.sysusers.enable = false;
     system.stateVersion = "21.05";
diff --git a/hosts/vidhar/network/dhcp/default.nix b/hosts/vidhar/network/dhcp/default.nix
index 07a83351..4151111d 100644
--- a/hosts/vidhar/network/dhcp/default.nix
+++ b/hosts/vidhar/network/dhcp/default.nix
@@ -2,7 +2,9 @@
 
 with lib;
 
-{
+let
+  nfsrootBaseUrl = "http://nfsroot.vidhar.yggdrasil";
+in {
   config = {
     services.kea = {
       dhcp4 = {
@@ -26,13 +28,13 @@ with lib;
             { name = "eostre-ipxe";
               test = "hexstring(pkt4.mac, ':') == '00:d8:61:79:c5:40' and option[77].hex == 'iPXE'";
               next-server = "10.141.0.1";
-              boot-file-name = "http://nfsroot.vidhar.yggdrasil/eostre/netboot.ipxe";
+              boot-file-name = "${nfsrootBaseUrl}/eostre.menu.ipxe";
               only-if-required = true;
             }
             { name = "ipxe";
               test = "option[77].hex == 'iPXE'";
               next-server = "10.141.0.1";
-              boot-file-name = "http://nfsroot.vidhar.yggdrasil/installer-x86_64-linux/netboot.ipxe";
+              boot-file-name = "${nfsrootBaseUrl}/installer-x86_64-linux.menu.ipxe";
               only-if-required = true;
             }
             { name = "uefi-64";
@@ -252,31 +254,63 @@ with lib;
           name = "nfsroot.vidhar.yggdrasil";
           paths =
             (map (system:
-               let
-                 installerBuild = (flake.nixosConfigurations.${"installer-${system}-nfsroot"}.extendModules {
-                   modules = [
-                     ({ ... }: {
-                       config.nfsroot.storeDevice = "10.141.0.1:nix-store";
-                       config.nfsroot.registrationUrl = "http://nfsroot.vidhar.yggdrasil/installer-${system}/registration";
-                     })
-                   ];
-                 }).config.system.build;
-               in builtins.toPath (pkgs.runCommandLocal "install-${system}" {} ''
-                 mkdir -p $out/installer-${system}
-                 install -m 0444 -t $out/installer-${system} \
-                   ${installerBuild.initialRamdisk}/initrd \
-                   ${installerBuild.kernel}/bzImage \
-                   ${installerBuild.netbootIpxeScript}/netboot.ipxe \
-                   ${pkgs.closureInfo { rootPaths = installerBuild.storeContents; }}/registration
-               '')
-              ) ["x86_64-linux"]
+              pkgs.symlinkJoin {
+                name = "installer-${system}";
+                paths = [
+                  (let
+                    installerBuild = (flake.nixosConfigurations.${"installer-${system}-nfsroot"}.extendModules {
+                      modules = [
+                        ({ ... }: {
+                          config.nfsroot.storeDevice = "10.141.0.1:nix-store";
+                          config.nfsroot.registrationUrl = "${nfsrootBaseUrl}/installer-${system}/registration";
+                        })
+                      ];
+                    }).config.system.build;
+                  in builtins.toPath (pkgs.runCommandLocal "install-${system}" {} ''
+                    mkdir -p $out/installer-${system}
+                    install -m 0444 -t $out/installer-${system} \
+                      ${installerBuild.initialRamdisk}/initrd \
+                      ${installerBuild.kernel}/bzImage \
+                      ${installerBuild.netbootIpxeScript}/netboot.ipxe \
+                      ${pkgs.closureInfo { rootPaths = installerBuild.storeContents; }}/registration
+                  ''))
+                  (pkgs.writeTextFile {
+                    name = "installer-${system}.menu.ipxe";
+                    destination = "/installer-${system}.menu.ipxe";
+                    text = ''
+                      :start
+                      menu iPXE boot menu for installer-${system}
+                      item installer Boot installer-${system}
+                      item netboot netboot.xyz
+                      item shell iPXE shell
+                      choose --timeout 0 --default installer selected || goto shell
+                      goto ''${selected}
+
+                      :shell
+                      shell
+                      goto start
+
+                      :installer
+                      chain ${nfsrootBaseUrl}/installer-${system}/netboot.ipxe
+                      goto start
+
+                      :netboot
+                      chain --autofree ${nfsrootBaseUrl}/netboot.xyz.efi
+                      goto start
+                    '';
+                  })
+                ];
+              }) ["x86_64-linux"]
             ) ++ [
+              (pkgs.linkFarm "netbootxyz-efi" [
+                { name = "netboot.xyz.efi"; path = pkgs.netbootxyz-efi; }
+              ])
               (let
                  eostreBuild = (flake.nixosConfigurations.eostre.extendModules {
                    modules = [
                      ({ ... }: {
                        config.nfsroot.storeDevice = "10.141.0.1:nix-store";
-                       config.nfsroot.registrationUrl = "http://nfsroot.vidhar.yggdrasil/eostre/registration";
+                       config.nfsroot.registrationUrl = "${nfsrootBaseUrl}/eostre/registration";
                      })
                    ];
                  }).config.system.build;
@@ -288,6 +322,34 @@ with lib;
                       ${eostreBuild.netbootIpxeScript}/netboot.ipxe \
                       ${pkgs.closureInfo { rootPaths = eostreBuild.storeContents; }}/registration
                   ''))
+              (pkgs.writeTextFile {
+                name = "eostre.menu.ipxe";
+                destination = "/eostre.menu.ipxe";
+                text = ''
+                  set menu-timeout 5000
+
+                  :start
+                  menu iPXE boot menu for eostre
+                  item eostre Boot eostre
+                  item netboot netboot.xyz
+                  item shell iPXE shell
+                  choose --timeout ''${menu-timeout} --default eostre selected || goto shell
+                  goto ''${selected}
+
+                  :shell
+                  shell
+                  set menu-timeout 0
+                  goto start
+
+                  :eostre
+                  chain ${nfsrootBaseUrl}/eostre/netboot.ipxe
+                  goto start
+
+                  :netboot
+                  chain --autofree ${nfsrootBaseUrl}/netboot.xyz.efi
+                  goto start
+                '';
+              })
             ];
         };
       };
-- 
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