Scope overlays and modules to specific host sets

hosts/atlas/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ config, ... }:
 
 {
   imports = [
@@ -6,6 +6,8 @@
     ../desktop.nix
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   boot.loader = {
     systemd-boot.enable = true;
     efi.canTouchEfiVariables = true;

hosts/common.nix

@@ -1,6 +1,22 @@
-{ config, pkgs, ... }:
+{ config, pkgs, self, ... }:
 
 {
+  imports = [
+    self.inputs.agenix.nixosModules.age
+    self.inputs.home-manager.nixosModule
+    ../modules
+  ];
+
+  nixpkgs.overlays = [
+    self.inputs.agenix.overlays.default
+    (import ../overlays/default.nix)
+    (
+      final: prev: {
+        unstable = import self.inputs.nixpkgs-unstable { system = final.system; };
+      }
+    )
+  ];
+
   time.timeZone = "Europe/London";
 
   i18n.defaultLocale = "en_GB.UTF-8";

hosts/desktop.nix

@@ -1,10 +1,14 @@
-{ config, lib, pkgs, ... }:
+{ config, pkgs, ... }:
 
 {
   imports = [
     ./common.nix
   ];
 
+  nixpkgs.overlays = [
+    (import ../overlays/gnome.nix)
+  ];
+
   services.printing.enable = true;
   services.openssh.startWhenNeeded = true;
 

hosts/eos/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, ... }:
 
 {
   imports = [
@@ -6,6 +6,8 @@
     ../desktop.nix
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   boot.loader = {
     systemd-boot.enable = true;
     efi.canTouchEfiVariables = true;

hosts/helios/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, inputs, ... }:
+{ config, ... }:
 
 {
   imports = [
@@ -6,6 +6,8 @@
     ../desktop.nix
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   boot = {
     loader.grub = {
       enable = true;

hosts/hypnos/default.nix

@@ -1,12 +1,21 @@
-{ config, lib, ... }:
+{ config, lib, self, ... }:
 
 {
   imports = [
+    self.inputs.disko.nixosModules.disko
     ./hardware-configuration.nix
     ./disko-config.nix
     ../desktop.nix
   ];
 
+  nixpkgs = {
+    hostPlatform = "x86_64-linux";
+    config = {
+      allowUnfree = true;
+      nvidia.acceptLicense = true;
+    };
+  };
+
   boot.loader = {
     systemd-boot.enable = true;
     efi.canTouchEfiVariables = true;

hosts/library/default.nix

@@ -6,6 +6,8 @@
     ../server.nix
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   boot = {
     loader.systemd-boot.enable = true;
     loader.efi.canTouchEfiVariables = true;

hosts/mail/default.nix

@@ -1,12 +1,15 @@
-{ config, lib, pkgs, inputs, ... }:
+{ config, lib, self, ... }:
 
 {
   imports = [
+    self.inputs.disko.nixosModules.disko
     ./hardware-configuration.nix
     ./disko-config.nix
     ../server.nix
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   networking = {
     hostId = "08ac2f14";
     domain = "mesh.vimium.net";

hosts/odyssey/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, inputs, ... }:
+{ config, ... }:
 
 {
   imports = [
@@ -6,6 +6,14 @@
     ../desktop.nix
   ];
 
+  nixpkgs = {
+    hostPlatform = "x86_64-linux";
+    config = {
+      allowUnfree = true;
+      nvidia.acceptLicense = true;
+    };
+  };
+
   boot.loader = {
     systemd-boot = {
       enable = true;

hosts/pi/default.nix

@@ -1,12 +1,13 @@
-{ config, lib, pkgs, inputs, ... }:
+{ config, lib, pkgs, self, ... }:
 
 {
   imports = [
+    self.inputs.nixos-hardware.nixosModules.raspberry-pi-4
     ./hardware-configuration.nix
     ../server.nix
   ];
 
-  networking.hostId = "731d1660";
+  nixpkgs.hostPlatform = "aarch64-linux";
 
   hardware = {
     raspberry-pi."4" = {
@@ -97,6 +98,8 @@
     ];
   };
 
+  networking.hostId = "731d1660";
+
   sound.enable = true;
 
   security.rtkit.enable = true;
@@ -108,7 +111,7 @@
   };
 
   age.secrets."files/services/home-assistant/secrets.yaml" = {
-    file = "${inputs.secrets}/files/services/home-assistant/secrets.yaml.age";
+    file = "${self.inputs.secrets}/files/services/home-assistant/secrets.yaml.age";
     path = "${config.services.home-assistant.configDir}/secrets.yaml";
     owner = "hass";
     group = "hass";
@@ -173,7 +176,7 @@
   };
 
   age.secrets."files/services/zigbee2mqtt/secret.yaml" = {
-    file = "${inputs.secrets}/files/services/zigbee2mqtt/secret.yaml.age";
+    file = "${self.inputs.secrets}/files/services/zigbee2mqtt/secret.yaml.age";
     path = "${config.services.zigbee2mqtt.dataDir}/secret.yaml";
     owner = "zigbee2mqtt";
     group = "zigbee2mqtt";

hosts/skycam/default.nix

@@ -1,11 +1,14 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, self, ... }:
 
 {
   imports = [
+    self.inputs.nixos-hardware.nixosModules.raspberry-pi-4
     ./hardware-configuration.nix
     ../server.nix
   ];
 
+  nixpkgs.hostPlatform = "aarch64-linux";
+
   hardware = {
     raspberry-pi."4" = {
       apply-overlays-dtmerge.enable = true;

hosts/vps1/default.nix

@@ -1,7 +1,4 @@
-{
-  lib,
-  ...
-}:
+{ lib, ... }:
 
 {
   imports = [
@@ -9,6 +6,8 @@
     ../server.nix
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   networking = {
     hostId = "08bf6db3";
     domain = "mesh.vimium.net";