octoprint: use headless ffmpeg by default (#499053)

nixos/modules/services/misc/octoprint.nix

@@ -11,7 +11,7 @@ let
   baseConfig = lib.recursiveUpdate {
     plugins.curalegacy.cura_engine = "${pkgs.curaengine_stable}/bin/CuraEngine";
     server.port = cfg.port;
-    webcam.ffmpeg = "${pkgs.ffmpeg.bin}/bin/ffmpeg";
+    webcam.ffmpeg = "${pkgs.ffmpeg-headless.bin}/bin/ffmpeg";
   } (lib.optionalAttrs (cfg.host != null) { server.host = cfg.host; });
 
   fullConfig = lib.recursiveUpdate cfg.extraConfig baseConfig;

pkgs/by-name/oc/octoprint/package.nix

@@ -172,7 +172,7 @@ let
 
             # hardcore path to ffmpeg and hide related settings
             (replaceVars ./ffmpeg-path.patch {
-              ffmpeg = "${pkgs.ffmpeg}/bin/ffmpeg";
+              ffmpeg = "${pkgs.ffmpeg-headless}/bin/ffmpeg";
             })
           ];