pyrox.dev
1{ pkgs, lib, ... }:
2let
3 track = pkgs.fetchurl {
4 # Sourced from http://freemusicarchive.org/music/Blue_Wave_Theory/Surf_Music_Month_Challenge/Skyhawk_Beach_fade_in
5
6 name = "Blue_Wave_Theory-Skyhawk_Beach.mp3";
7 url = "https://freemusicarchive.org/file/music/ccCommunity/Blue_Wave_Theory/Surf_Music_Month_Challenge/Blue_Wave_Theory_-_04_-_Skyhawk_Beach.mp3";
8 hash = "sha256-91VDWwrcP6Cw4rk72VHvZ8RGfRBrpRE8xo/02dcJhHc=";
9 meta.license = lib.licenses.cc-by-sa-40;
10 };
11
12 defaultCfg = rec {
13 user = "mpd";
14 group = "mpd";
15 dataDir = "/var/lib/mpd";
16 musicDirectory = "${dataDir}/music";
17 };
18
19 defaultMpdCfg = {
20 inherit (defaultCfg)
21 dataDir
22 musicDirectory
23 user
24 group
25 ;
26 enable = true;
27 };
28
29 musicService =
30 {
31 user,
32 group,
33 musicDirectory,
34 }:
35 {
36 description = "Sets up the music file(s) for MPD to use.";
37 requires = [ "mpd.service" ];
38 after = [ "mpd.service" ];
39 wantedBy = [ "default.target" ];
40 script = ''
41 cp ${track} ${musicDirectory}
42 '';
43 serviceConfig = {
44 User = user;
45 Group = group;
46 };
47 };
48
49 mkServer =
50 { mpd, musicService }:
51 {
52 boot.kernelModules = [ "snd-dummy" ];
53 services.mpd = mpd;
54 systemd.services.musicService = musicService;
55 };
56in
57{
58 name = "mpd";
59 meta = {
60 maintainers = with lib.maintainers; [ emmanuelrosa ];
61 };
62
63 nodes = {
64 client = { ... }: { };
65
66 serverALSA =
67 { ... }:
68 lib.mkMerge [
69 (mkServer {
70 mpd = defaultMpdCfg // {
71 network.listenAddress = "any";
72 extraConfig = ''
73 audio_output {
74 type "alsa"
75 name "ALSA"
76 mixer_type "null"
77 }
78 '';
79 };
80 musicService = musicService { inherit (defaultMpdCfg) user group musicDirectory; };
81 })
82 { networking.firewall.allowedTCPPorts = [ 6600 ]; }
83 ];
84
85 serverPulseAudio =
86 { ... }:
87 lib.mkMerge [
88 (mkServer {
89 mpd = defaultMpdCfg // {
90 extraConfig = ''
91 audio_output {
92 type "pulse"
93 name "The Pulse"
94 }
95 '';
96 };
97
98 musicService = musicService { inherit (defaultMpdCfg) user group musicDirectory; };
99 })
100 {
101 services.pulseaudio = {
102 enable = true;
103 systemWide = true;
104 tcp.enable = true;
105 tcp.anonymousClients.allowAll = true;
106 };
107 systemd.services.mpd.environment.PULSE_SERVER = "localhost";
108 }
109 ];
110 };
111
112 testScript = ''
113 mpc = "${lib.getExe pkgs.mpc} --wait"
114
115 # Connects to the given server and attempts to play a tune.
116 def play_some_music(server):
117 server.wait_for_unit("mpd.service")
118 server.succeed(f"{mpc} update")
119 _, tracks = server.execute(f"{mpc} ls")
120
121 for track in tracks.splitlines():
122 server.succeed(f"{mpc} add {track}")
123
124 _, added_tracks = server.execute(f"{mpc} playlist")
125
126 # Check we succeeded adding audio tracks to the playlist
127 assert len(added_tracks.splitlines()) > 0
128
129 server.succeed(f"{mpc} play")
130
131 _, output = server.execute(f"{mpc} status")
132 # Assure audio track is playing
133 assert "playing" in output
134
135 server.succeed(f"{mpc} stop")
136
137
138 play_some_music(serverALSA)
139 play_some_music(serverPulseAudio)
140
141 client.wait_for_unit("multi-user.target")
142 client.succeed(f"{mpc} -h serverALSA status")
143
144 # The PulseAudio-based server is configured not to accept external client connections
145 # to perform the following test:
146 client.fail(f"{mpc} -h serverPulseAudio status")
147 '';
148}