chore(flake): update locked inputs

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.codex/config.toml

@@ -0,0 +1,5 @@
+## Me
+
+[mcp_servers.nixos]
+command = "nix"
+args = ["run", "github:utensils/mcp-nixos", "--"]

TODO.md

@@ -1,3 +1 @@
-- Evaluate Plasma Manager when Plasma 6.7 support improves
 - Review system-wide package list periodically
-- Add additional hosts

flake.lock

@@ -37,11 +37,11 @@
         "sf-pro": "sf-pro"
       },
       "locked": {
-        "lastModified": 1786018145,
-        "narHash": "sha256-4cjJFmq6JC0Gk9wWt3aZzqovtmM9mikrDWjsBL2ZWu8=",
+        "lastModified": 1789419105,
+        "narHash": "sha256-T5A/AqlF4iL908aIZh45e35Mvj8lTJKq8ddS5bk7nd8=",
         "owner": "Lyndeno",
         "repo": "apple-fonts.nix",
-        "rev": "66b5379c6a429ad4ea6ff3943cc1f651df55cc70",
+        "rev": "3861e2249cb244bfbc7cfab2303c152cf5f9d9e9",
         "type": "github"
       },
       "original": {
@@ -96,15 +96,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1784665499,
-        "narHash": "sha256-9BMxlTxCCDAeoNLtb1a/st7udtTIJep+wpUzquA29VU=",
-        "owner": "nix-community",
+        "lastModified": 1788011267,
+        "narHash": "sha256-mEq2kU+ljompTToZ44Afvm7d/rHJ5iMBl0tjZuyShJs=",
+        "owner": "Mic92",
         "repo": "bun2nix",
-        "rev": "0f2a1f0b6f42cebe3b149bf62d38754c5e0e9729",
+        "rev": "5765b0614591f75ee8ba5596e81ae85c167d1071",
         "type": "github"
       },
       "original": {
-        "owner": "nix-community",
+        "owner": "Mic92",
+        "ref": "fix-structured-attrs-hook",
         "repo": "bun2nix",
         "type": "github"
       }
@@ -161,11 +162,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1785627969,
-        "narHash": "sha256-4dtXQk/NMePegK/nWp5NSeuZKLATItOq61lpEvmXqGw=",
+        "lastModified": 1788450739,
+        "narHash": "sha256-glZLQlzIn1fXH6PazR2iUmTo7kzzyYSshrWhLS9TqCU=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "427bf4bd9435fdf21321c8cc628c24efc14c0f7a",
+        "rev": "31729ca8cbdb4fa927b34e5f4353e6a83f39e993",
         "type": "github"
       },
       "original": {
@@ -220,11 +221,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1786356609,
-        "narHash": "sha256-ou8fYz5w9yhXC8YbvvExybFIa19MyW5G/8dEPqa90hM=",
+        "lastModified": 1789978077,
+        "narHash": "sha256-p/e37FfVifxJQJM7OiiVbUXdpj6eXmOJk34TKLKyYe4=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "c30c7955cec30d664a9baced6bc0112e263d4647",
+        "rev": "a26f7158fbc4aa740fcc7fa79a01e1ed29910bc2",
         "type": "github"
       },
       "original": {
@@ -242,11 +243,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1786389530,
-        "narHash": "sha256-YTLO0pwBI3eAxT6tssly2MY1lhntcNOV3Xg1agIL5x4=",
+        "lastModified": 1789987094,
+        "narHash": "sha256-jzlT1EofmNifqUjpiSJMPbm/GiU17r65WUi44Kfkmdc=",
         "owner": "numtide",
         "repo": "llm-agents.nix",
-        "rev": "5b6721acbc198851658de3f93444d2be308ffe77",
+        "rev": "7c0157f864d113d9f0ce324a78496de6da6e7e07",
         "type": "github"
       },
       "original": {
@@ -276,11 +277,11 @@
         "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1786328173,
-        "narHash": "sha256-ghZYtP08BstfBD3keiUHM5KupIRY3+YS+naBsFPtGzc=",
+        "lastModified": 1789964597,
+        "narHash": "sha256-L+tPmy48VrsS/qVrj504pETaGEcVFMs1QpU5kKpBo0U=",
         "owner": "nix-community",
         "repo": "nix-vscode-extensions",
-        "rev": "f5911382d78f7d739197702509b83d790d592cea",
+        "rev": "fa4ec37adf8d8c725bfd8915c497ed41c7cb0f70",
         "type": "github"
       },
       "original": {
@@ -322,11 +323,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1785975029,
-        "narHash": "sha256-X44cn5rzytELc3NNoQsh0aLkjWA/QzPfc6HPQmsG3sU=",
+        "lastModified": 1789813231,
+        "narHash": "sha256-dsU+UU4X3ND95E/O6Z33qK5jPxIeB/7akn/+NfAk+nY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "70ce234312134a463ba7728e94da2486a1d237ac",
+        "rev": "c80073788adf88abfdc443465311f00e7a231600",
         "type": "github"
       },
       "original": {
@@ -354,11 +355,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1786106723,
-        "narHash": "sha256-zDSUbpoeo/9ZmD2+wXnzxoo1+uhL8vxc0b8yuYMKYq0=",
+        "lastModified": 1789785513,
+        "narHash": "sha256-B44WL6h0XoLjJ41bUPJk0X5SDinLCII//6EcBLXKiJ0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "f13ff45afd1bb73e640eaa08a7066dbed07e3238",
+        "rev": "20b1ddd1aa5ace70c9468305030aa4f9ef79671b",
         "type": "github"
       },
       "original": {
@@ -444,7 +445,7 @@
     "sf-compact": {
       "flake": false,
       "locked": {
-        "narHash": "sha256-83JwqfF9O4+gemMQXWHLRg2GNz2jHxsej1F1IkM2dug=",
+        "narHash": "sha256-KjCzuJOrNxgptsMLGaR8wcrU/bBxCpwtUGzGDcCxJTc=",
         "type": "file",
         "url": "https://devimages-cdn.apple.com/design/resources/download/SF-Compact.dmg"
       },
@@ -492,7 +493,7 @@
     "sf-pro": {
       "flake": false,
       "locked": {
-        "narHash": "sha256-vINUEMyFmNzZRBOX2aQ4heScWur6RyA/MPmsqlMPIx4=",
+        "narHash": "sha256-dvGLO786y9ygKRSKDJlhIF6AGmn2NTJ5tBulKinPRxY=",
         "type": "file",
         "url": "https://devimages-cdn.apple.com/design/resources/download/SF-Pro.dmg"
       },
@@ -508,11 +509,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1785827118,
-        "narHash": "sha256-tS2eSSpa1uLPUyIAJBpf00+A9KSHpC92gKMLavmHuio=",
+        "lastModified": 1789899222,
+        "narHash": "sha256-B00sDpFqhTYuVQIesCdR7GeYJFNogz5U1VmJlSEJnmc=",
         "owner": "wimpysworld",
         "repo": "sidra",
-        "rev": "0597e5438fe98fef935cb528c2c9aa5db60171c9",
+        "rev": "ebba6a85eadd15de9d324503b012f84bf5eaf4ce",
         "type": "github"
       },
       "original": {
@@ -559,11 +560,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1785945821,
-        "narHash": "sha256-NLSyTCW4K4ofhNBllt3omPasm6QpralXH1DBZOc91Dw=",
+        "lastModified": 1786901030,
+        "narHash": "sha256-WSFCsDSE5ffgD2MqzkM2CYjeFiKhRF/dJUN8uedb6YE=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "ae7910970dddc408fe6ab1c8e4b277bb21d72dc0",
+        "rev": "27b3b12a8e6375f28ebe122f07d230ca5459bbfa",
         "type": "github"
       },
       "original": {

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "NixOS configuration for my homelab";
+  description = "my nixos configurations";
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
@@ -54,7 +54,9 @@
             home-manager.sharedModules = [
               plasma-manager.homeModules.plasma-manager
             ];
-            home-manager.users.emmatherock = import ./home/emmatherock/home.nix;
+            home-manager.users.emmatherock = { osConfig, ... }: {
+              imports = [ ./home/emmatherock/core.nix ] ++ osConfig.myHomeProfile.extraPrograms;
+            };
           }
         ];
       };
@@ -65,8 +67,17 @@
         specialArgs = { inherit inputs; };
         modules = [
           ./hosts/vps
+          home-manager.nixosModules.home-manager
           vscode-server.nixosModules.default
           agenix.nixosModules.default
+          {
+            home-manager.useGlobalPkgs = true;
+            home-manager.useUserPackages = true;
+            home-manager.extraSpecialArgs = { inherit inputs; };
+            home-manager.users.emmatherock = { osConfig, ... }: {
+              imports = [ ./home/emmatherock/core.nix ] ++ osConfig.myHomeProfile.extraPrograms;
+            };
+          }
         ];
       };
     };

home/emmatherock/agents.nix

@@ -5,8 +5,9 @@ let
 in
 {
   home.packages = with agents; [
-    antigravity-cli
     codex
+    codex-acp
     claude-code
+    claude-agent-acp
   ];
 }

home/emmatherock/core.nix

@@ -0,0 +1,21 @@
+{ pkgs, ... }:
+{
+  imports = [
+    ./git.nix
+    ./shell.nix
+  ];
+
+  programs.home-manager.enable = true;
+  programs.btop.enable = true;
+
+  # Per-project toolchain resolution through nix-shell / flake devShell.
+  programs.direnv = {
+    enable = true;
+    nix-direnv.enable = true;
+  };
+  home.packages = with pkgs; [
+    fastfetch
+  ];
+
+  home.stateVersion = "25.11";
+}

home/emmatherock/home.nix

@@ -1,18 +0,0 @@
-{
-  imports = [
-    ./agents.nix
-    ./audio.nix
-    ./desktop-apps.nix
-    ./deskflow.nix
-    ./gaming.nix
-    ./git.nix
-    ./media.nix
-    ./packages.nix
-    ./plasma.nix
-    ./shell.nix
-    ./vscode.nix
-  ];
-
-  programs.home-manager.enable = true;
-  home.stateVersion = "25.11";
-}

home/emmatherock/packages.nix

@@ -1,10 +1,8 @@
 { pkgs, ... }:
 {
+  programs.btop.package = pkgs.btop.override { cudaSupport = false; rocmSupport = true; };
+
   home.packages = with pkgs; [
-    # --- Base y Terminal ---
-    vim
-    fastfetch
-    (btop.override { cudaSupport = false; rocmSupport = true; })
     nvtopPackages.full
   ];
 }

hosts/miku-homelab/default.nix

@@ -5,18 +5,39 @@
     ./hardware-configuration.nix
     ../../modules/profiles/desktop.nix
     ../../modules/profiles/server.nix
+    ../../modules/services/ollama.nix
     ../../modules/services/samba.nix
+    ../../modules/system/home-profile.nix
     ../../modules/system/nix-ld.nix
     ../../modules/system/packages.nix
   ];
 
   age.secrets.miku-homelab-wg.file = ../../secrets/miku-homelab-wg.age;
 
+  myPackages.extra = with pkgs; [
+    rocmPackages.rocm-smi
+    btrfs-progs
+    distrobox
+    steam-run
+  ];
+
+  myHomeProfile.extraPrograms = [
+    ../../home/emmatherock/agents.nix
+    ../../home/emmatherock/audio.nix
+    ../../home/emmatherock/desktop-apps.nix
+    ../../home/emmatherock/deskflow.nix
+    ../../home/emmatherock/gaming.nix
+    ../../home/emmatherock/media.nix
+    ../../home/emmatherock/packages.nix
+    ../../home/emmatherock/plasma.nix
+    ../../home/emmatherock/vscode.nix
+  ];
+
   myNetworking = {
     hostName = "miku-homelab";
     useNetworkManager = true;
     staticIp = {
-      interface = "enp6s0";
+      interface = "enp9s0";
       address = "10.1.1.21";
       prefixLength = 24;
       gateway = "10.1.1.1";
@@ -31,7 +52,7 @@
       privateKeyFile = config.age.secrets.miku-homelab-wg.path;
       peers = [
         {
-          publicKey = "zERcSEQhan+xtmPOIjuVSkQaBynTjH96SgZZF9CZNV8=";
+          publicKey = "BKs9VlsIEM1np6wHeVFL4NfbS1l69xnwins6Q12ByAM=";
           allowedIPs = [ "10.20.0.1/32" ];
           endpoint = "vps.external.mikufanclub.lat:51822";
           persistentKeepalive = 25;
@@ -47,7 +68,7 @@
       extraGroups = [ "plugdev" "networkmanager" "wheel" "video" "mikushare-group" "render" ];
       authorizedKeys = [
         "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA8vfwM5g9RJXqHtqTgNqsYg9SxSm+UMvFqTjBoAsLJ6 emmatherock@MAIN-PC"
-        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIpTslcK0yQ6k+h8foNl17wVRyJUfEGzq7f1h3014WNB s21 plus"
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIO6pnKpUEaeoNXqlenc8MAz1GG8P6BRILyIHMSLtvdeF termius"
       ];
     };
     serviceUsers.mikushare = {
@@ -90,7 +111,35 @@
     plymouth.enable = true;
     initrd.kernelModules = [ "amdgpu" ];
     kernelPackages = pkgs.linuxPackages_latest;
-    kernelParams = [ "quiet" "splash" "boot.shell_on_fail" "loglevel=3" "iommu=pt" ];
+    kernelParams = [
+      "quiet"
+      "splash"
+      "boot.shell_on_fail"
+      "loglevel=3"
+      "iommu=pt"
+      "zswap.enabled=1"
+      "zswap.compressor=zstd"
+      "zswap.max_pool_percent=20"
+      "zswap.zpool=zsmalloc"
+    ];
+  };
+
+  swapDevices = [
+    {
+      device = "/dev/disk/by-label/optane-swap-1";
+      priority = 50;
+    }
+    {
+      device = "/dev/disk/by-label/optane-swap-2";
+      priority = 50;
+    }
+  ];
+
+  zramSwap = {
+    enable = true;
+    algorithm = "zstd";
+    memoryPercent = 50;
+    priority = 100;
   };
 
   time.timeZone = "America/Argentina/Buenos_Aires";
@@ -126,7 +175,7 @@
     wantedBy = [ "multi-user.target" ];
     serviceConfig = {
       Type = "oneshot";
-      ExecStart = "${pkgs.ethtool}/bin/ethtool -K enp6s0 rx-udp-gro-forwarding on rx-gro-list on";
+      ExecStart = "${pkgs.ethtool}/bin/ethtool -K enp9s0 rx-udp-gro-forwarding on rx-gro-list on";
       RemainAfterExit = true;
     };
   };

hosts/vps/default.nix

@@ -1,26 +1,33 @@
-{ config, ... }:
+{ config, pkgs, ... }:
 
 {
   imports = [
     ./hardware-configuration.nix
     ../../modules/profiles/server.nix
+    ../../modules/system/home-profile.nix
+    ../../modules/system/nix-ld.nix
+    ../../modules/system/packages.nix
   ];
 
-  # PLACEHOLDER: secrets/vps-wg.age does not exist yet. It has to be created
-  # (same way as secrets/miku-homelab-wg.age) once this host is installed and
-  # its own WireGuard private key has been generated.
   age.secrets.vps-wg.file = ../../secrets/vps-wg.age;
 
+  myHomeProfile.extraPrograms = [
+    ../../home/emmatherock/agents.nix
+  ];
+
   myNetworking = {
     hostName = "vps";
     useNetworkManager = false;
+    useNetworkd = true;
     staticIp = {
-      interface = "eth0";
+      interface = "ens3";
       address = "23.175.41.196";
       prefixLength = 27;
       gateway = "23.175.41.225";
       nameservers = [ "1.1.1.1" "1.0.0.1" ];
+      onlinkGateway = true;
     };
+
     extraTcpPorts = [ 80 443 ];
     extraUdpPorts = [ 51822 ];
     sshAllowUsers = [ "emmatherock" ];
@@ -34,6 +41,10 @@
           publicKey = "bqxDHQNxOSFpTo3We9ujC2WljtaRBgiNEewW+Rlu10k=";
           allowedIPs = [ "10.20.0.2/32" ];
         }
+        {
+          publicKey = "6aw0w7v9uFGvLn/eSdf7z/ljvzz4kviYlSOSj0LKp1E=";
+          allowedIPs = [ "10.20.0.3/32" ];
+        }
       ];
     };
   };
@@ -41,10 +52,12 @@
   myUsers = {
     admins.emmatherock = {
       description = "EmmaTheRock";
+      shell = pkgs.fish;
       extraGroups = [ "wheel" ];
       authorizedKeys = [
         "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA8vfwM5g9RJXqHtqTgNqsYg9SxSm+UMvFqTjBoAsLJ6 emmatherock@MAIN-PC"
-        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIpTslcK0yQ6k+h8foNl17wVRyJUfEGzq7f1h3014WNB s21 plus"
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEUCpjAuJobymPPAoPjLdL1eD6g4v6wrquu3cyHP22Wj emmatherock@NixOS"
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIO6pnKpUEaeoNXqlenc8MAz1GG8P6BRILyIHMSLtvdeF termius"
       ];
     };
   };
@@ -57,17 +70,20 @@
     };
   };
 
-  # PLACEHOLDER: adjust once the real VPS image/provider is known (BIOS vs
-  # UEFI, actual boot device). Assumes a generic BIOS-booted image for now.
-  boot.loader.grub = {
-    enable = true;
-    device = "/dev/sda";
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.systemd-boot.configurationLimit = 10;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  # Required for this host to act as a Tailscale/Headscale exit node.
+  boot.kernel.sysctl = {
+    "net.ipv4.ip_forward" = 1;
+    "net.ipv6.conf.all.forwarding" = 1;
   };
 
-  time.timeZone = "UTC";
+  time.timeZone = "America/Argentina/Buenos_Aires";
   i18n.defaultLocale = "en_US.UTF-8";
 
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
 
-  system.stateVersion = "25.11";
+  system.stateVersion = "26.05";
 }

hosts/vps/hardware-configuration.nix

@@ -1,21 +1,28 @@
-{ lib, ... }:
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
 
-# PLACEHOLDER: this host has not been installed yet. Replace this whole file
-# with the real hardware-configuration.nix generated by `nixos-generate-config`
-# during the actual installation (it will pick up the real disk UUIDs,
-# filesystem types, and kernel modules for the VPS provider's image).
 {
-  imports = [ ];
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
 
-  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "ahci" "sd_mod" "sr_mod" "virtio_blk" ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" = {
-    device = "/dev/disk/by-uuid/00000000-0000-0000-0000-000000000000";
-    fsType = "ext4";
-  };
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/9601-188F";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/2fe62056-55d1-4d2a-97a4-74451f7a63d0";
+      fsType = "ext4";
+    };
 
   swapDevices = [ ];
 

modules/services/maintenance.nix

@@ -9,5 +9,7 @@
     options = "--delete-older-than 14d";
   };
 
-  services.journald.extraConfig = "SystemMaxUse=500M";
+  services.journald.settings.Journal = {
+    SystemMaxUse = "500M";
+  };
 }

modules/services/ollama.nix

@@ -0,0 +1,35 @@
+{ pkgs, ... }:
+
+{
+  services.ollama = {
+    enable = true;
+    # `services.ollama.acceleration` does not exist (that option only lives on
+    # services.tabby); GPU backend selection for ollama is done by package choice.
+    package = pkgs.ollama-rocm;
+
+    # Same "don't expose services directly" pattern as the rest of the homelab:
+    # bind to localhost only. If this needs to be reachable from other devices
+    # later, put it behind Traefik + Headscale like the other services instead
+    # of opening it up directly.
+    host = "127.0.0.1";
+    port = 11434;
+
+    environmentVariables = {
+      # Ollama is on-demand by design: it loads a model into VRAM on the first
+      # request and unloads it after this much idle time. 5m is already the
+      # ollama default, set explicitly so it's not an implicit behavior.
+      OLLAMA_KEEP_ALIVE = "5m";
+    };
+
+    # RDNA4 (gfx1200/gfx1201, incl. the RX 9060 XT) has official ROCm support
+    # since ROCm 6.4.4. Verified on this host (2026-08-30) with rocmPackages.clr
+    # 7.2.3: `rocminfo` correctly reports "Name: gfx1200" and `rocm-smi
+    # --showmeminfo vram` reports the full 16GiB, so the "detected with 0 VRAM,
+    # falls back to CPU" issue does not reproduce here and rocmOverrideGfx is
+    # not needed. If a future nixpkgs bump regresses this, re-check with:
+    #   nix shell nixpkgs#rocmPackages.rocminfo -c rocminfo | grep -i gfx
+    #   nix shell nixpkgs#rocmPackages.rocm-smi -c rocm-smi --showmeminfo vram
+    # and only then set rocmOverrideGfx = "12.0.0"; (gfx1200) if VRAM reports 0.
+    # rocmOverrideGfx = "12.0.0";
+  };
+}

modules/system/home-profile.nix

@@ -0,0 +1,8 @@
+{ lib, ... }:
+{
+  options.myHomeProfile.extraPrograms = lib.mkOption {
+    type = lib.types.listOf lib.types.path;
+    default = [ ];
+    description = "Extra Home Manager modules to import for this user, on top of the core profile.";
+  };
+}

modules/system/networking.nix

@@ -39,6 +39,12 @@ in
       description = "Whether to enable NetworkManager to manage network interfaces.";
     };
 
+    useNetworkd = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Whether to configure the static IP via systemd-networkd instead of the classic scripted networking backend. Needed for reliable onlink default routes.";
+    };
+
     staticIp = lib.mkOption {
       type = lib.types.nullOr (lib.types.submodule {
         options = {
@@ -63,6 +69,11 @@ in
             default = [ "1.1.1.1" "8.8.8.8" ];
             description = "DNS nameservers to use.";
           };
+          onlinkGateway = lib.mkOption {
+            type = lib.types.bool;
+            default = false;
+            description = "Whether the gateway lies outside the interface's subnet, requiring the onlink flag on the default route.";
+          };
         };
       });
       default = null;
@@ -116,52 +127,81 @@ in
     };
   };
 
-  config = {
-    networking = lib.mkMerge [
-      {
-        hostName = cfg.hostName;
-        networkmanager.enable = cfg.useNetworkManager;
-        firewall = {
-          enable = true;
-          allowedUDPPorts = [ config.services.tailscale.port ] ++ cfg.extraUdpPorts;
-          allowedTCPPorts = [ 22 ] ++ cfg.extraTcpPorts;
-        };
-      }
-      (lib.mkIf (cfg.staticIp != null) {
-        useDHCP = false;
-        interfaces.${cfg.staticIp.interface}.ipv4.addresses = [{
-          address = cfg.staticIp.address;
-          prefixLength = cfg.staticIp.prefixLength;
-        }];
-        defaultGateway = cfg.staticIp.gateway;
-        nameservers = cfg.staticIp.nameservers;
-      })
-      (lib.mkIf cfg.wireguard.enable {
-        wireguard.interfaces."wg-${cfg.hostName}" = {
-          ips = cfg.wireguard.ips;
-          privateKeyFile = cfg.wireguard.privateKeyFile;
-          listenPort = cfg.wireguard.listenPort;
-          peers = map (peer: {
-            inherit (peer) publicKey allowedIPs;
-          } // lib.optionalAttrs (peer.endpoint != null) {
-            inherit (peer) endpoint;
-          } // lib.optionalAttrs (peer.persistentKeepalive != null) {
-            inherit (peer) persistentKeepalive;
-          }) cfg.wireguard.peers;
-        };
-      })
-    ];
+  config = lib.mkMerge [
+    {
+      networking = lib.mkMerge [
+        {
+          hostName = cfg.hostName;
+          networkmanager.enable = cfg.useNetworkManager;
+          firewall = {
+            enable = true;
+            allowedUDPPorts = [ config.services.tailscale.port ] ++ cfg.extraUdpPorts;
+            allowedTCPPorts = [ 22 ] ++ cfg.extraTcpPorts;
+          };
+        }
+        (lib.mkIf (cfg.staticIp != null && !cfg.useNetworkd) {
+          useDHCP = false;
+          interfaces.${cfg.staticIp.interface}.ipv4.addresses = [{
+            address = cfg.staticIp.address;
+            prefixLength = cfg.staticIp.prefixLength;
+          }];
+          nameservers = cfg.staticIp.nameservers;
+        })
+        (lib.mkIf (cfg.staticIp != null && !cfg.useNetworkd && !cfg.staticIp.onlinkGateway) {
+          defaultGateway = cfg.staticIp.gateway;
+        })
+        (lib.mkIf cfg.wireguard.enable {
+          wireguard.interfaces."wg-${cfg.hostName}" = {
+            ips = cfg.wireguard.ips;
+            privateKeyFile = cfg.wireguard.privateKeyFile;
+            listenPort = cfg.wireguard.listenPort;
+            peers = map (peer: {
+              inherit (peer) publicKey allowedIPs;
+            } // lib.optionalAttrs (peer.endpoint != null) {
+              inherit (peer) endpoint;
+            } // lib.optionalAttrs (peer.persistentKeepalive != null) {
+              inherit (peer) persistentKeepalive;
+            }) cfg.wireguard.peers;
+          };
+        })
+      ];
 
-    services.tailscale.enable = true;
+      services.tailscale.enable = true;
 
-    services.openssh = {
-      enable = true;
-      settings = {
-        PermitRootLogin = "no";
-        PasswordAuthentication = false;
-      } // lib.optionalAttrs (cfg.sshAllowUsers != [ ]) {
-        AllowUsers = cfg.sshAllowUsers;
+      services.openssh = {
+        enable = true;
+        settings = {
+          PermitRootLogin = "no";
+          PasswordAuthentication = false;
+        } // lib.optionalAttrs (cfg.sshAllowUsers != [ ]) {
+          AllowUsers = cfg.sshAllowUsers;
+        };
       };
-    };
-  };
+    }
+
+    (lib.mkIf (cfg.staticIp != null && cfg.useNetworkd) {
+      networking.useDHCP = false;
+      systemd.network.enable = true;
+      services.resolved.enable = true;
+
+      systemd.network.networks."10-${cfg.staticIp.interface}" = {
+        matchConfig.Name = cfg.staticIp.interface;
+        address = [ "${cfg.staticIp.address}/${toString cfg.staticIp.prefixLength}" ];
+        dns = cfg.staticIp.nameservers;
+        routes = [
+          ({
+            routeConfig = {
+              Gateway = cfg.staticIp.gateway;
+            } // lib.optionalAttrs cfg.staticIp.onlinkGateway {
+              GatewayOnLink = true;
+            };
+          })
+        ];
+        networkConfig = {
+          DHCP = "no";
+        };
+        linkConfig.RequiredForOnline = "routable";
+      };
+    })
+  ];
 }

modules/system/packages.nix

@@ -1,14 +1,25 @@
-{pkgs, ... }: 
+{ lib, pkgs, config, ... }:
+
+let
+  cfg = config.myPackages;
+in
 {
-  environment.systemPackages = with pkgs; [
-    git
-    wget
-    curl
-    ethtool
-    fish
-    rocmPackages.rocm-smi
-    btrfs-progs
-    distrobox
-    steam-run
-  ];
+  options.myPackages = {
+    extra = lib.mkOption {
+      type = lib.types.listOf lib.types.package;
+      default = [ ];
+      description = "Extra packages to install on this host, beyond the core set.";
+    };
+  };
+
+  config = {
+    environment.systemPackages = with pkgs; [
+      git
+      wget
+      curl
+      ethtool
+      fish
+      tmux
+    ] ++ cfg.extra;
+  };
 }

secrets/secrets.nix

@@ -1,20 +1,19 @@
 let
   # Emma's personal SSH keys (same ones authorized in modules/system/users.nix),
-  # so secrets can be edited/re-keyed from her own workstations.
+  # so secrets can be edited/re-keyed from his own workstations.
   emma-main-pc = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA8vfwM5g9RJXqHtqTgNqsYg9SxSm+UMvFqTjBoAsLJ6 emmatherock@MAIN-PC";
   emma-s21-plus = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIpTslcK0yQ6k+h8foNl17wVRyJUfEGzq7f1h3014WNB s21 plus";
+  emma-nixos = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEUCpjAuJobymPPAoPjLdL1eD6g4v6wrquu3cyHP22Wj emmatherock@NixOS";
 
   # Host SSH host keys, used by agenix at runtime to decrypt (via the default
   # age.identityPaths, which points at services.openssh host keys).
   miku-homelab = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIH7zsQdzX7RHRd2plwrTKJR89uwR2YfzBm1n+HkcYEbb root@NixOS";
 
-  # TODO: replace with the real vps SSH host key once the host is installed
-  # (e.g. via `ssh-keyscan` or by reading /etc/ssh/ssh_host_ed25519_key.pub on
-  # the vps itself), then re-key any vps secrets that were encrypted without it.
-  vps = "ssh-ed25519 REPLACE_ME_AFTER_VPS_INSTALL";
+  vps = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDh8+hpWkGLRszFI4TC1/YHB8IiSdM0UUOsWbOwXPLn6 root@vps";
 
-  admins = [ emma-main-pc emma-s21-plus ];
+  admins = [ emma-main-pc emma-s21-plus emma-nixos ];
 in
 {
   "miku-homelab-wg.age".publicKeys = admins ++ [ miku-homelab ];
+  "vps-wg.age".publicKeys = admins ++ [ vps ];
 }