nixgl: move under targets.genericLinux

docs/manual/usage/gpu-non-nixos.md

@@ -7,7 +7,8 @@ can be integrated into Home Manager.
 
 To enable the integration, import NixGL into your home configuration, either as
 a channel, or as a flake input passed via `extraSpecialArgs`. Then, set the
-`nixGL.packages` option to the package set provided by NixGL.
+`targets.genericLinux.nixGL.packages` option to the package set provided by
+NixGL.
 
 Once integration is enabled, it can be used in two ways: as Nix functions for
 wrapping programs installed via Home Manager, and as shell commands for running
@@ -35,10 +36,11 @@ different hardware. There is also the `config.lib.nixGL.wrapOffload` alias for
 two-GPU systems.
 
 Another convenience is that all wrapper functions are always available. However,
-when `nixGL.packages` option is unset, they are no-ops. This allows them to be
-used even when the home configuration is used on NixOS machines. The exception
-is the `prime-offload` script which ignores `nixGL.packages` and is installed
-into the environment whenever `nixGL.prime.installScript` is set. This script,
+when `targets.genericLinux.nixGL.packages` option is unset, they are no-ops.
+This allows them to be used even when the home configuration is used on NixOS
+machines. The exception is the `prime-offload` script which ignores
+`targets.genericLinux.nixGL.packages` and is installed into the environment
+whenever `targets.genericLinux.nixGL.prime.installScript` is set. This script,
 which can be used to start a program on a secondary GPU, does not depend on
 NixGL and is useful on NixOS systems as well.
 
@@ -52,10 +54,12 @@ demonstration purposes.
 ```nix
 { config, lib, pkgs, nixgl, ... }:
 {
-  nixGL.packages = nixgl.packages;
-  nixGL.defaultWrapper = "mesa";
-  nixGL.offloadWrapper = "nvidiaPrime";
-  nixGL.installScripts = [ "mesa" "nvidiaPrime" ];
+  targets.genericLinux.nixGL = {
+    packages = nixgl.packages;
+    defaultWrapper = "mesa";
+    offloadWrapper = "nvidiaPrime";
+    installScripts = [ "mesa" "nvidiaPrime" ];
+  };
 
   programs.mpv = {
     enable = true;
@@ -75,7 +79,7 @@ flake. When using channels, the example would instead begin with
 ```nix
 { config, lib, pkgs, ... }:
 {
-  nixGL.packages = import <nixgl> { inherit pkgs; };
+  targets.genericLinux.nixGL.packages = import <nixgl> { inherit pkgs; };
   # The rest is the same as above
   ...
 ```

modules/modules.nix

@@ -36,7 +36,6 @@ let
     ./misc/news.nix
     ./misc/nix-remote-build.nix
     ./misc/nix.nix
-    ./misc/nixgl.nix
     ./misc/numlock.nix
     ./misc/pam.nix
     ./misc/qt.nix

modules/targets/generic-linux.nix

@@ -24,6 +24,8 @@ in
         "data"
       ]
     )
+    (lib.mkRenamedOptionModule [ "nixGL" ] [ "targets" "genericLinux" "nixGL" ])
+    ./generic-linux/nixgl.nix
   ];
 
   options.targets.genericLinux = {

modules/targets/generic-linux/nixgl.nix

@@ -6,7 +6,7 @@
 }:
 
 let
-  cfg = config.nixGL;
+  cfg = config.targets.genericLinux.nixGL;
 
   wrapperAttrNames = [
     "mesa"
@@ -21,7 +21,7 @@ in
 {
   meta.maintainers = [ lib.maintainers.smona ];
 
-  options.nixGL = {
+  options.targets.genericLinux.nixGL = {
     packages = lib.mkOption {
       type = with lib.types; nullOr attrs;
       default = null;