mpv: update wrapper to support multiple --script args

pkgs/applications/video/mpv/scripts/mpv-osc-tethys.nix

@@ -9,6 +9,7 @@ buildLua (finalAttrs: {
 
   scriptPath = "osc_tethys.lua";
   extraScriptsToCopy = [ "mpv_thumbnail_script_server.lua" ];
+  extraScriptsToLoad = [ "mpv_thumbnail_script_server.lua" ];
 
   src = fetchFromGitHub {
     owner = "Zren";

pkgs/applications/video/mpv/scripts/quality-menu.nix

@@ -19,6 +19,7 @@ buildLua rec {
   passthru.updateScript = gitUpdater { rev-prefix = "v"; };
 
   extraScriptsToCopy = lib.optional oscSupport "quality-menu-osc.lua";
+  extraScriptsToLoad = lib.optional oscSupport "quality-menu-osc.lua";
 
   meta = with lib; {
     description = "Userscript for MPV that allows you to change youtube video quality (ytdl-format) on the fly";

pkgs/applications/video/mpv/scripts/thumbnail.nix

@@ -24,7 +24,7 @@ buildLua rec {
 
   scriptPath = "mpv_thumbnail_script_client_osc.lua";
   extraScriptsToCopy = [ "mpv_thumbnail_script_server.lua" ];
-  passthru.scriptName = "mpv_thumbnail_script_{client_osc,server}.lua";
+  extraScriptsToLoad = [ "mpv_thumbnail_script_server.lua" ];
 
   meta = {
     description = "Lua script to show preview thumbnails in mpv's OSC seekbar";

pkgs/applications/video/mpv/wrapper.nix

@@ -73,12 +73,17 @@ let
             # For every script in the `scripts` argument, add the necessary flags to the wrapper
             (
               script:
-              [
-                "--add-flags"
-                # Here we rely on the existence of the `scriptName` passthru
-                # attribute of the script derivation from the `scripts`
-                "--script=${script}/share/mpv/scripts/${script.scriptName}"
-              ]
+              let
+                mkScriptArgs = script: scriptName: [
+                  "--add-flags"
+                  "--script=${script}/share/mpv/scripts/${scriptName}"
+                ];
+              in
+              # Here we rely on the existence of the `scriptName` passthru
+              # attribute of the script derivation from the `scripts`
+              (mkScriptArgs script script.scriptName)
+              # scripts might need others to be explicitly loaded
+              ++ (map (extraScriptName: mkScriptArgs script extraScriptName) (script.extraScriptsToLoad or [ ]))
               # scripts can also set the `extraWrapperArgs` passthru
               ++ (script.extraWrapperArgs or [ ])
             )