From 157caffbeba0945103f60b625f8f78a1d7777fc1 Mon Sep 17 00:00:00 2001
From: vin <vin@vineetk.net>
Date: Sun, 21 Sep 2025 14:24:00 -0400
Subject: begrudgingly go back to pipewire

fighting against it is hard, especially on nixos and when I want steam
---
 hosts/demiurge/default.nix | 135 ++++++++-------------------------------------
 1 file changed, 23 insertions(+), 112 deletions(-)

diff --git a/hosts/demiurge/default.nix b/hosts/demiurge/default.nix
index 9f35926..10d2cbe 100644
--- a/hosts/demiurge/default.nix
+++ b/hosts/demiurge/default.nix
@@ -247,8 +247,10 @@
         }
       ];
     };
-
     sudo.enable = false;
+
+    # needed to give realtime privileges to pipewire
+    rtkit.enable = true;
   };
 
   services = {
@@ -478,122 +480,31 @@
       alsa.enable = true;
       audio.enable = true;
       pulse.enable = true;
-
-      extraConfig.pipewire = {
-        "99-filter-he5xx.conf" = {
-          "context.modules" = [
-            {
-              name = "libpipewire-module-filter-chain";
-              args = {
-                node.name = "peq-he5xx-sink";
-                node.description = "PEQ HE5XX (auto)";
-                # playback.props is the virtual sink/device properties
-                playback.props = {
-                  media.class = "Audio/Sink";
-                  "filter.smart" = true;
-                  "filter.smart.name" = "peq-he5xx";
-                  # tell WirePlumber what target properties this filter is intended for
-                  # (we leave this unset here; smart target matching will be done by wireplumber)
-                };
-                # filter graph: single builtin param_eq node that loads the param file
-                filter.graph = [
-                  {
-                    type = "builtin";
-                    name = "param_eq";
-                    label = "param_eq_he5xx";
-                    config.filename = "/etc/pipewire/parametric/he5xx.txt";
-                  }
-                ];
-              };
-            }
-          ];
-        };
-
-        "99-filter-airpods.conf" = {
-          "context.modules" = [
-            {
-              name = "libpipewire-module-filter-chain";
-              args = {
-                node.name = "peq-airpods-pro-2-sink";
-                node.description = "PEQ AirPods Pro 2 (auto)";
-                playback.props = {
-                  media.class = "Audio/Sink";
-                  "filter.smart" = true;
-                  "filter.smart.name" = "peq-airpods-pro-2";
-                };
-                filter.graph = [
-                  {
-                    type = "builtin";
-                    name = "param_eq";
-                    label = "param_eq_airpods";
-                    config.filename = "/etc/pipewire/parametric/airpods-pro-2.txt";
-                  }
-                ];
-              };
-            }
-          ];
-        };
-      };
-
       wireplumber = {
         enable = true;
-        extraConfig."50-smartfilters-airpods.conf".text = ''
-            {
-              "monitor.bluez.rules" : [
-              # When a BlueZ device is detected we set an identifying property that the smart filter will match.
-              # (This fragment adds nothing by default; we're using a policy to match target.node later.)
-            ],
-
-            "policy.rules" : [
-              # The core smart filter matching is done by matching the target.node properties
-              # WirePlumber's smart filters will look for filter.smart.target (set below).
-            ],
-
-            "policy" : {
-              "smart_filters" : {
-                "rules" : [
-                  {
-                    "matches" : [
-                      { "device.props" : { "bluez5.device.name" : "AirPods Pro 2" } }
-                    ],
-                    "actions" : {
-                      # If target device matches, set the 'target.node' metadata for smart filters to use
-                      "update-metadata" : {
-                        "target.node" : { "name" : "bluez_output.*AirPods.*" }
-                      }
+        extraConfig = {
+          "51-set-default-eq.conf" = {
+            text = ''
+              monitor.rules = [
+                {
+                  matches = [
+                    {
+                      # This rule matches the node with the name of your sink (node 35)
+                      "node.name" = "effect_input.eq6"
+                    }
+                  ]
+                  actions = {
+                    update-props = {
+                      # This sets a very high priority, making it the default.
+                      # Standard hardware is usually around 1000.
+                      "priority.session" = 2001
                     }
-                  }
-                ]
-              }
-            },
-
-            "endpoint.rules" : [
-              {
-                "matches" : [
-                  { "node.name" : "peq-airpods-pro-2-sink" }
-                ],
-                "actions" : {
-                  "update-props" : {
-                    # Mark this WF sink as intended for a specific target device.
-                    # WirePlumber will use filter.smart.target to identify which device to chain to.
-                    "filter.smart.target" : { "bluez5.device.name" : "AirPods Pro 2" }
-                  }
-                }
-              },
-              {
-                "matches" : [
-                  { "node.name" : "peq-he5xx-sink" }
-                ],
-                "actions" : {
-                  "update-props" : {
-                    # He5xx is a generic filter (no specific bluez target) — it could be matched by other rules.
-                    "filter.smart.target" : {}
                   }
                 }
-              }
-            ]
-          }
-        '';
+              ]
+            '';
+          };
+        };
       };
     };
 
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