feat: Add support for ipxe boot ephemeral systems

artifacts.nix

@@ -2,6 +2,7 @@
 let
   nixpkgs = inputs.nixpkgs;
   lib = nixpkgs.lib;
+  pkgs = nixpkgs.legacyPackages.${system};
   nixos-generators = inputs.nixos-generators;
 
   mkInstaller = hostName:
@@ -36,16 +37,56 @@ let
       inherit format;
     };
 
+  mkNetboot = hostName:
+    nixpkgs.lib.nixosSystem {
+      inherit system;
+      specialArgs = { inherit inputs; };
+      modules = hosts.modules.${hostName} ++ [
+        "${nixpkgs}/nixos/modules/installer/netboot/netboot.nix"
+        {
+          disko.enableConfig = lib.mkForce false;
+          services.upower.enable = lib.mkForce false;
+        }
+      ];
+    };
+
   hostNames = builtins.attrNames hosts.nixosConfigurations;
 
   installerPackages = lib.listToAttrs (lib.concatMap (name:
     let cfg = hosts.nixosConfigurations.${name}; in
-    if lib.elem "iso" cfg.config.host.buildMethods then [{
+    if lib.elem "installer-iso" cfg.config.host.buildMethods then [{
       name = "installer-iso-${name}";
       value = (mkInstaller name).config.system.build.isoImage;
     }] else []
   ) hostNames);
 
+  isoPackages = lib.listToAttrs (lib.concatMap (name:
+    let cfg = hosts.nixosConfigurations.${name}; in
+    if lib.elem "iso" cfg.config.host.buildMethods then [{
+      name = "iso-${name}";
+      value = mkGenerator name "iso";
+    }] else []
+  ) hostNames);
+
+  ipxePackages = lib.listToAttrs (lib.concatMap (name:
+    let cfg = hosts.nixosConfigurations.${name}; in
+    if lib.elem "ipxe" cfg.config.host.buildMethods then [{
+      name = "ipxe-${name}";
+      value =
+        let
+          build = (mkNetboot name).config.system.build;
+        in
+        pkgs.symlinkJoin {
+          name = "netboot-artifacts-${name}";
+          paths = [
+            build.netbootRamdisk
+            build.kernel
+            build.netbootIpxeScript
+          ];
+        };
+    }] else []
+  ) hostNames);
+
   lxcPackages = lib.listToAttrs (lib.concatMap (name:
     let cfg = hosts.nixosConfigurations.${name}; in
     if lib.elem "lxc" cfg.config.host.buildMethods then [{
@@ -70,4 +111,4 @@ let
     }] else []
   ) hostNames);
 in
-installerPackages // lxcPackages // proxmoxPackages
+installerPackages // isoPackages // ipxePackages // lxcPackages // proxmoxPackages