From 3f728a7c57692d8ddcc85c6825ff03838f24203e Mon Sep 17 00:00:00 2001
From: Nathan van Doorn <nvd1234@gmail.com>
Date: Wed, 18 Oct 2023 19:58:02 +0200
Subject: [PATCH 1/2] Rename pkgconfig => pkg-config

To match an upstream warning. It'd be nice if we got a warning...
---
 ntv2-gst/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ntv2-gst/default.nix b/ntv2-gst/default.nix
index f4697c1..5521bbc 100644
--- a/ntv2-gst/default.nix
+++ b/ntv2-gst/default.nix
@@ -3,7 +3,7 @@
   ntv2-gst-src,
   autoconf,
   automake,
-  pkgconfig,
+  pkg-config,
   libtool,
   gst_all_1,
   ntv2,
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
   sourceRoot = "source/gst-plugin";
   patches = [./no.patch];
 
-  nativeBuildInputs = [autoconf automake pkgconfig libtool gst_all_1.gst-plugins-base ntv2];
+  nativeBuildInputs = [autoconf automake pkg-config libtool gst_all_1.gst-plugins-base ntv2];
   GST_NTV2 = "${ntv2}/include";
   preConfigure = ''
     ./autogen.sh

From 8161d3e369ca7c0cd23e11b7d9d3b60da495828c Mon Sep 17 00:00:00 2001
From: Nathan van Doorn <nvd1234@gmail.com>
Date: Wed, 18 Oct 2023 19:58:58 +0200
Subject: [PATCH 2/2] Make a nixos module and make the readme suggest you use
 that

---
 flake.nix | 21 +++++++++++++++++++++
 readme.md | 15 ++-------------
 2 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/flake.nix b/flake.nix
index d604d53..556efd3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -30,6 +30,27 @@
         ntv2-driver = linuxFinal.callPackage ./ntv2/driver.nix { inherit ntv2-src; };
       });
     };
+    nixosModules.default = { config, lib, pkgs, ... }: {
+      options = {
+        ntv2 = {
+          enable = lib.mkOption {
+            type = lib.types.bool;
+            default = false;
+            description = "If enabled, install the AJA driver, utilities, and gstreamer plugin.";
+          };
+        };
+      };
+      config = lib.mkIf config.ntv2.enable {
+        # Apply the overlay to the system nixpkgs
+        nixpkgs.overlays = [ self.overlays.default ];
+        # Include the kernel module...
+        boot.extraModulePackages = [ pkgs.linuxPackages.ntv2-driver ];
+        # ...and load it automatically.
+        boot.kernelModules = [ "ajantv2" ];
+        # Include the utils and demos, and the gstreamer plugin
+        environment.systemPackages = [ pkgs.ntv2 pkgs.ntv2-gst ];
+      };
+    };
   } // flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
   let
     pkgs = import nixpkgs { inherit system; overlays = [ self.overlays.default ]; };
diff --git a/readme.md b/readme.md
index 6e18779..9bb6857 100644
--- a/readme.md
+++ b/readme.md
@@ -7,20 +7,9 @@ gstreamer plugin. This allows you to use Aja video IO cards on NixOS.
 ## Usage
 
 - Add the flake to your system flake's inputs.
-- Apply the overlay to your system's nixpkgs, e.g.
+- Enable the module by adding the following to your system config:
   ```nix
-  nixpkgs.overlays = [ ajantv2.overlays.default ];
-  ```
-- Add the kernel driver:
-  ```nix
-  # Include the kernel module 
-  boot.extraModulePackages = [pkgs.linuxPackages.ntv2-driver];
-  # And load it automatically
-  boot.kernelModules = [ "ajantv2" ];
-  ```
-- Include the utils/demos and gstreamer plugin:
-  ```nix
-  environment.systemPackages = [pkgs.ntv2 pkgs.ntv2-gst]
+  ntv2.enable = true;
   ```
 
 ## Gstreamer