obs-studio-plugins: Prepare for transition to packagesFromDirectoryRecursive

Mostly just some mechanical find-and-replace with the following
commands(run from the `plugins/` directory:

```sh
  # qtbase -> qt6.qtbase
  find ./ -type f -exec sed -i -e 's/qtbase,/qt6,/g' {} \;
  find ./ -type f -exec sed -i -e 's/qtbase/qt6.qtbase/g' {} \;
  # <package>/default.nix -> <package>/package.nix, as required by
packagesFromDirectoryRecursive
  find ./ -name 'default.nix' -exec bash -c 'mv $0 ${0/default/package}'
{} \;
  # Rename since ez solution
  mv ./package.nix ./default.nix
```

You'll also need to remove `wrapQtAppsHook` from obs-tuna and use
`qt6.wrapQtAppsHook` instead.(I did this manually.) There's also the
change in obs-vkcapture.nix which I hope is self-explanatory, and is
gated behind x86_64-linux so doesn't impact other platforms

pkgs/applications/video/obs-studio/plugins/advanced-scene-switcher/package.nix

@@ -14,7 +14,7 @@
   obs-studio,
   opencv,
   procps,
-  qtbase,
+  qt6,
   stdenv,
   websocketpp,
   libxscrnsaver,
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
     # tesseract
     # leptonica
     procps
-    qtbase
+    qt6.qtbase
     websocketpp
     libxscrnsaver
     libusb1

pkgs/applications/video/obs-studio/plugins/distroav/package.nix

@@ -4,7 +4,7 @@
   fetchFromGitHub,
   obs-studio,
   cmake,
-  qtbase,
+  qt6,
   ndi-6,
   curl,
 }:
@@ -15,12 +15,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-    qtbase
+    qt6.qtbase
   ];
 
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
     ndi-6
     curl
   ];

pkgs/applications/video/obs-studio/plugins/input-overlay.nix

@@ -6,7 +6,7 @@
   pkg-config,
   ninja,
   obs-studio,
-  qtbase,
+  qt6,
   libxt,
   libxtst,
   libxi,
@@ -40,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
     sdl3
     libx11
     libxau

pkgs/applications/video/obs-studio/plugins/obs-aitum-multistream.nix

@@ -5,7 +5,7 @@
   cmake,
   curl,
   obs-studio,
-  qtbase,
+  qt6,
 }:
 
 stdenv.mkDerivation rec {
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     curl
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
   dontWrapQtApps = true;
 

pkgs/applications/video/obs-studio/plugins/obs-color-monitor.nix

@@ -4,7 +4,7 @@
   fetchFromGitHub,
   cmake,
   obs-studio,
-  qtbase,
+  qt6,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   postInstall = ''

pkgs/applications/video/obs-studio/plugins/obs-freeze-filter.nix

@@ -4,7 +4,7 @@
   fetchFromGitHub,
   cmake,
   obs-studio,
-  qtbase,
+  qt6,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -22,7 +22,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   postInstall = ''

pkgs/applications/video/obs-studio/plugins/obs-hyperion/package.nix

@@ -6,7 +6,7 @@
   pkg-config,
   obs-studio,
   libGL,
-  qtbase,
+  qt6,
   flatbuffers,
 }:
 
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     obs-studio
     flatbuffers
     libGL
-    qtbase
+    qt6.qtbase
   ];
 
   dontWrapQtApps = true;

pkgs/applications/video/obs-studio/plugins/obs-media-controls/package.nix

@@ -4,7 +4,7 @@
   fetchFromGitHub,
   cmake,
   obs-studio,
-  qtbase,
+  qt6,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   dontWrapQtApps = true;

pkgs/applications/video/obs-studio/plugins/obs-multi-rtmp/package.nix

@@ -4,7 +4,7 @@
   fetchFromGitHub,
   obs-studio,
   cmake,
-  qtbase,
+  qt6,
   fetchpatch,
 }:
 
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   cmakeFlags = [

pkgs/applications/video/obs-studio/plugins/obs-shaderfilter.nix

@@ -4,7 +4,7 @@
   fetchFromGitHub,
   cmake,
   obs-studio,
-  qtbase,
+  qt6,
 }:
 
 stdenv.mkDerivation rec {
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   cmakeFlags = [

pkgs/applications/video/obs-studio/plugins/obs-transition-table.nix

@@ -4,7 +4,7 @@
   fetchFromGitHub,
   cmake,
   obs-studio,
-  qtbase,
+  qt6,
 }:
 
 stdenv.mkDerivation {
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ cmake ];
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   dontWrapQtApps = true;

pkgs/applications/video/obs-studio/plugins/obs-tuna/package.nix

@@ -8,8 +8,7 @@
   curl,
   dbus,
   pkg-config,
-  qtbase,
-  wrapQtAppsHook,
+  qt6,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -19,11 +18,11 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [
     cmake
     pkg-config
-    wrapQtAppsHook
+    qt6.wrapQtAppsHook
   ];
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
     zlib
     curl
     dbus

pkgs/applications/video/obs-studio/plugins/obs-vertical-canvas.nix

@@ -5,7 +5,7 @@
   cmake,
   curl,
   obs-studio,
-  qtbase,
+  qt6,
 }:
 
 stdenv.mkDerivation rec {
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     curl
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   cmakeFlags = [

pkgs/applications/video/obs-studio/plugins/obs-vkcapture.nix

@@ -16,8 +16,11 @@
   vulkan-headers,
   vulkan-loader,
   libGL,
-  obs-vkcapture32,
+  pkgsi686Linux,
 }:
+let
+  obs-vkcapture32 = pkgsi686Linux.obs-studio-plugins.obs-vkcapture;
+in
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "obs-vkcapture";

pkgs/applications/video/obs-studio/plugins/obs-wayland-hotkeys/package.nix

@@ -5,7 +5,7 @@
   cmake,
   obs-studio,
   pkg-config,
-  qtbase,
+  qt6,
   nix-update-script,
 }:
 stdenv.mkDerivation (finalAttr: {
@@ -26,7 +26,7 @@ stdenv.mkDerivation (finalAttr: {
 
   buildInputs = [
     obs-studio
-    qtbase
+    qt6.qtbase
   ];
 
   dontWrapQtApps = true;

pkgs/applications/video/obs-studio/plugins/obs-websocket.nix

@@ -5,7 +5,7 @@
   cmake,
   asio,
   obs-studio,
-  qtbase,
+  qt6,
   websocketpp,
 }:
 
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     asio
     obs-studio
-    qtbase
+    qt6.qtbase
     websocketpp
   ];