feat(home): add RetroArch for device "ryu" and update MPV config

Add RetroArch as a home package for devices named "ryu" and enhance MPV configuration with GPU settings. Adjust wallpaper engine service to improve performance. Add a script for enabling HDR with Steam commands.

Author: uttarayan21

home/apps/mpv.nix

@@ -1,6 +1,20 @@
 {pkgs, ...}: {
   programs.mpv = {
     enable = true;
+    config = {
+      vo = "gpu-next";
+      gpu-api = "vulkan";
+      # hdr-compute-peak = "yes";
+      # hdr-peak-detect = "yes";
+      # target-peak = 400;
+      # target-prim = "bt.2020";
+      # target-trc = "pq";
+      # inverse-tone-mapping = "yes";
+      # tone-mapping = "spline";
+      # tone-mapping-mode = "auto";
+      # target-colorspace-hint = "auto";
+      # gamut-mapping = "desaturate";
+    };
     package =
       if pkgs.stdenv.isLinux
       then pkgs.mpv-unwrapped.wrapper {mpv = pkgs.mpv-unwrapped.override {sixelSupport = true;};}

home/programs/default.nix

@@ -38,6 +38,7 @@
     ./yazi.nix
     ./yt-dlp.nix
     ./zoxide.nix
+    ./retroarch.nix
 
     # ./goread.nix
     # ./helix.nix

home/programs/retroarch.nix

@@ -0,0 +1,8 @@
+{
+  pkgs,
+  device,
+  lib,
+  ...
+}: {
+  home.packages = lib.optionals (device.name == "ryu") [pkgs.retroarch-full];
+}

home/services/wallpaperengine.nix

@@ -19,7 +19,7 @@ lib.mkIf (device.is "ryu") {
       ];
       Type = "simple";
       ExecStartPre = "${pkgs.coreutils}/bin/sleep 3";
-      ExecStart = "${pkgs.linux-wallpaperengine}/bin/linux-wallpaperengine -s --scaling fill --screen-root HDMI-A-1 --bg 2780316434";
+      ExecStart = "${pkgs.linux-wallpaperengine}/bin/linux-wallpaperengine --silent --no-audio-processing -f 15 --scaling fill --screen-root HDMI-A-1 --bg 2780316434";
       Restart = "on-failure";
       RestartSec = 5;
       TimeoutStartSec = 30;

scripts/hdr-steamcommand

@@ -0,0 +1,3 @@
+ENABLE_HDR_WSI=1 DXVK_HDR=1 gamescope -W 2560 -H 1440 -r 240 -e --hdr-enabled -- %command%
+
+PROTON_ENABLE_WAYLAND=1 PROTON_ENABLE_HDR=1 %command%