move hardware stuff from getHosts to module

hosts/cube/configuration.nix

@@ -3,6 +3,7 @@
   sconfig = {
     gnome = true;
     profile = "desktop";
+    hardware = "physical";
     security-tools = true;
     i3.extraConfig = ''
       exec xrandr --output DisplayPort-0 --mode 2560x1440 --rate 165

hosts/cube/default.nix

@@ -1,6 +1,5 @@
 {
   pkgs = "nixpkgs";
   system = "x86_64-linux";
-  hardware = "physical";
   module = ./configuration.nix;
 }

hosts/hp/configuration.nix

@@ -7,6 +7,7 @@
   sconfig = {
     gnome = true;
     profile = "desktop";
+    hardware = "physical";
     security-tools = true;
   };
 

hosts/hp/default.nix

@@ -1,6 +1,5 @@
 {
   pkgs = "nixpkgs";
   system = "x86_64-linux";
-  hardware = "physical";
   module = ./configuration.nix;
 }

hosts/nixdev/configuration.nix

@@ -2,6 +2,7 @@
 {
   sconfig = {
     profile = "server";
+    hardware = "qemu";
   };
 
   environment.persistence."/nix/persist" = {

hosts/nixdev/default.nix

@@ -1,6 +1,5 @@
 {
   pkgs = "nixpkgs";
   system = "x86_64-linux";
-  hardware = "qemu";
   module = ./configuration.nix;
 }

hosts/slate/configuration.nix

@@ -2,6 +2,7 @@
 {
   sconfig = {
     profile = "desktop";
+    hardware = "physical";
     gnome = true;
     security-tools = true;
   };

hosts/slate/default.nix

@@ -1,6 +1,5 @@
 {
   pkgs = "nixpkgs";
   system = "x86_64-linux";
-  hardware = "physical";
   module = ./configuration.nix;
 }

lib/hosts.nix

@@ -5,21 +5,6 @@ let
     (name: _: import (path + "/${name}"))
     (builtins.readDir path);
 
-  hardwareModules =
-    {
-      physical = (x: {
-        imports = [ "${x.modulesPath}/installer/scan/not-detected.nix" ];
-      });
-      vmware = (x: {
-        virtualisation.vmware.guest.enable = true;
-        boot.initrd.availableKernelModules = [ "mptspi" ];
-      });
-      qemu = (x: {
-        services.qemuGuest.enable = true;
-        imports = [ "${x.modulesPath}/profiles/qemu-guest.nix" ];
-      });
-    };
-
   getHostConfig = hostName: hostMeta:
     inputs.${hostMeta.pkgs}.lib.nixosSystem
       {
@@ -27,7 +12,6 @@ let
         modules = [
           (nixosModule)
           (hostMeta.module)
-          (hardwareModules.${hostMeta.hardware})
           (_: { networking.hostName = hostName; })
           (_: {
             nixpkgs.overlays = [

modules/hardware.nix

@@ -0,0 +1,36 @@
+{ config, pkgs, lib, modulesPath, ... }:
+let
+
+  inherit (pkgs) callPackage;
+
+  hardwareFor = name: cfg: lib.mkIf (config.sconfig.hardware == name) cfg;
+
+  hardwareModules =
+    [
+      (hardwareFor "qemu"
+        {
+          inherit (callPackage "${modulesPath}/profiles/qemu-guest.nix" { }) boot;
+          services.qemuGuest.enable = true;
+        })
+
+      (hardwareFor "vmware"
+        {
+          virtualisation.vmware.guest.enable = true;
+          boot.initrd.availableKernelModules = [ "mptspi" ];
+        })
+
+      (hardwareFor "physical"
+        {
+          inherit (callPackage "${modulesPath}/installer/scan/not-detected.nix" { }) hardware;
+        })
+    ];
+
+in
+with lib;
+{
+  options.sconfig.hardware = mkOption {
+    type = types.enum [ "physical" "vmware" "qemu" ];
+  };
+
+  config = fold (a: b: a // b) { } hardwareModules;
+}