Hi all! I'm trying to configure a specific device with services.pipewire.wireplumber.configPackages but it doesn't seem like it's loading the config. I see the config file in /nix/store, but it doesn't show up in /etc.
Here is my config:

services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    jack.enable = true;
    wireplumber.enable = true;

    wireplumber.configPackages = [
      (pkgs.writeTextDir "share/wireplumber/main.lua.d/99-alsa-low-latency.conf" ''
        monitor.alsa.rules = {
          {
            matches = {
              { "node.name", "matches", "alsa_input.usb-Focusrite_Scarlett_4i4_4th_Gen_S49C91841831EB-00.*"; }
              { "node.name", "matches", "alsa_output.usb-Focusrite_Scarlett_4i4_4th_Gen_S49C91841831EB-00.*"; }
            },
            apply_properties = {
              ["audio.rate"] = 192000,
              ["api.alsa.period-size"] = 512,
              ["api.alsa.period-num"] = 3,
            },
          }, 
        }
      '')
    ];

    # add virtual audio device for butt streaming
    extraConfig.pipewire = {
      "99-clock-rates" = {
        "context.properties" = {
          "default.clock.allowed-rates" = [ 48000 192000 ];
        };
      };
    };
  };

1. nixos.wiki is outdated, don't use it
2. you will need to put keys in quotation marks, e.g., "monitor.alsa.rules" instead of monitor.alsa.rules

I updated my config, but it's still not being loaded. I tried both configPackages and extraConfig. None work.

wireplumber.configPackages = [
    (pkgs.writeTextDir "share/wireplumber/wireplumber.conf.d/99-alsa-low-latency.conf" ''
      "monitor.alsa.rules" = [
        {
          matches = [
            { "node.name" = "alsa_input.usb-Focusrite_Scarlett_4i4_4th_Gen_S49C91841831EB-00.*"; }
            { "node.name" = "alsa_output.usb-Focusrite_Scarlett_4i4_4th_Gen_S49C91841831EB-00.*"; }
          ];
          actions = {
            update-props = {
              "audio.rate" = 192000;
              "api.alsa.period-size" = 512;
              "api.alsa.period-num" = 3;
            };
          };
        }
      ];
    '')
  ];

  wireplumber.extraConfig = {
    "98-alsa-low-latency" = {
      "monitor.alsa.rules" = [
        {
          matches = [
            { "node.name" = "alsa_input.usb-Focusrite_Scarlett_4i4_4th_Gen_S49C91841831EB-00.*"; }
            { "node.name" = "alsa_output.usb-Focusrite_Scarlett_4i4_4th_Gen_S49C91841831EB-00.*"; }
          ];
          actions = {
            update-props = {
              "audio.rate" = 192000;
              "api.alsa.period-size" = 512;
              "api.alsa.period-num" = 3;
            };
          };
        }
      ];
    };
  };