From 4e5570be887e9601c962e752741eb9da6f7828c7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sandro=20J=C3=A4ckel?= <sandro.jaeckel@gmail.com>
Date: Mon, 20 Sep 2021 22:26:37 +0200
Subject: [PATCH] Switch to pipewire

---
 hosts/pulsebert/default.nix                 | 23 +++-----
 hosts/pulsebert/generate.sh                 |  9 ++++
 hosts/pulsebert/pipewire-pulse.conf.in.json | 20 +++++++
 hosts/pulsebert/pipewire-pulse.conf.json    | 58 +++++++++++++++++++++
 4 files changed, 95 insertions(+), 15 deletions(-)
 create mode 100755 hosts/pulsebert/generate.sh
 create mode 100644 hosts/pulsebert/pipewire-pulse.conf.in.json
 create mode 100644 hosts/pulsebert/pipewire-pulse.conf.json

diff --git a/hosts/pulsebert/default.nix b/hosts/pulsebert/default.nix
index 670c2aff..a37d3483 100644
--- a/hosts/pulsebert/default.nix
+++ b/hosts/pulsebert/default.nix
@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 let
   octoprintPort = 8080;
@@ -60,6 +60,7 @@ in {
     mpv
     ncmpcpp
     ncpamixer
+    pulseaudio # required for pactl
     vim
     wget
   ];
@@ -99,22 +100,14 @@ in {
       };
     };
   };
-  hardware.pulseaudio = {
+
+  services.pipewire = {
     enable = true;
-    systemWide = true;
-    tcp.enable = true;
-    tcp.anonymousClients.allowedIpRanges = [
-      "127.0.0.0/8"
-      "::1/128"
-      "fd23:42:c3d2:500::/56"
-      "172.22.99.0/24"
-      "172.20.72.0/21"
-      "2a00:8180:2c00:200::/56"
-    ];
-    zeroconf.publish.enable = true;
-    package = pkgs.pulseaudioFull;
-    extraModules = [ pkgs.pulseaudio-modules-bt ];
+    alsa.enable = true;
+    config.pipewire-pulse = lib.importJSON ./pipewire-pulse.conf.json;
+    pulse.enable = true;
   };
+  security.rtkit.enable = true;
 
   # tell Avahi to publish CUPS and PulseAudio
   services.avahi = {
diff --git a/hosts/pulsebert/generate.sh b/hosts/pulsebert/generate.sh
new file mode 100755
index 00000000..4407ee35
--- /dev/null
+++ b/hosts/pulsebert/generate.sh
@@ -0,0 +1,9 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p jq
+
+# shellcheck shell=bash
+
+dir=$(dirname "$(readlink -f "$0")")
+default_pipewire_pulse=$(nix-instantiate --eval -E '(import <nixos> { }).pkgs.path')/nixos/modules/services/desktops/pipewire/pipewire-pulse.conf.json
+
+jq -s '.[0] * .[1] * .[2]' "$dir/pipewire-pulse.conf.in.json" "$default_pipewire_pulse" > "$dir/pipewire-pulse.conf.json" <(jq -cnS '{ "context.modules": [ inputs."context.modules" ] | add}' "$default_pipewire_pulse" "$dir/pipewire-pulse.conf.in.json")
diff --git a/hosts/pulsebert/pipewire-pulse.conf.in.json b/hosts/pulsebert/pipewire-pulse.conf.in.json
new file mode 100644
index 00000000..ec7072d1
--- /dev/null
+++ b/hosts/pulsebert/pipewire-pulse.conf.in.json
@@ -0,0 +1,20 @@
+{
+  "context.modules": [
+    {
+      "name": "libpipewire-module-zeroconf-publish"
+    },
+    {
+      "name": "libpipewire-module-protocol-pulse",
+      "args": {
+        "server.address": [
+          "tcp:127.0.0.0/8",
+          "tcp:::1/128",
+          "tcp:fd23:42:c3d2:500::/56",
+          "tcp:172.22.99.0/24",
+          "tcp:172.20.72.0/21",
+          "tcp:2a00:8180:2c00:200::/56"
+        ]
+      }
+    }
+  ]
+}
diff --git a/hosts/pulsebert/pipewire-pulse.conf.json b/hosts/pulsebert/pipewire-pulse.conf.json
new file mode 100644
index 00000000..ba9c48bb
--- /dev/null
+++ b/hosts/pulsebert/pipewire-pulse.conf.json
@@ -0,0 +1,58 @@
+{
+  "context.modules": [
+    {
+      "args": {},
+      "flags": [
+        "ifexists",
+        "nofail"
+      ],
+      "name": "libpipewire-module-rtkit"
+    },
+    {
+      "name": "libpipewire-module-protocol-native"
+    },
+    {
+      "name": "libpipewire-module-client-node"
+    },
+    {
+      "name": "libpipewire-module-adapter"
+    },
+    {
+      "name": "libpipewire-module-metadata"
+    },
+    {
+      "args": {
+        "server.address": [
+          "unix:native"
+        ],
+        "vm.overrides": {
+          "pulse.min.quantum": "1024/48000"
+        }
+      },
+      "name": "libpipewire-module-protocol-pulse"
+    },
+    {
+      "name": "libpipewire-module-zeroconf-publish"
+    },
+    {
+      "args": {
+        "server.address": [
+          "tcp:127.0.0.0/8",
+          "tcp:::1/128",
+          "tcp:fd23:42:c3d2:500::/56",
+          "tcp:172.22.99.0/24",
+          "tcp:172.20.72.0/21",
+          "tcp:2a00:8180:2c00:200::/56"
+        ]
+      },
+      "name": "libpipewire-module-protocol-pulse"
+    }
+  ],
+  "context.properties": {},
+  "context.spa-libs": {
+    "audio.convert.*": "audioconvert/libspa-audioconvert",
+    "support.*": "support/libspa-support"
+  },
+  "context.exec": [],
+  "stream.properties": {}
+}