mpv: Make the primary screen configurable

hosts/miku.nix

@@ -50,6 +50,10 @@
         # Enable notification sounds
         propagatedBuildInputs = old.propagatedBuildInputs ++ [ prev.gsound ];
       });
+
+      animedl = prev.animedl.overrideAttrs (old: {
+        extraPkgs = pkgs: with pkgs; [ mpv ];
+      });
     })
 
     # Unstable, NUR, ...
@@ -95,6 +99,8 @@
     };
   };
 
+  programs.mpv.primaryScreen = "C27F398";
+  
   networking = {
     interfaces.enp6s0.useDHCP = false;
     hostName = "miku";