Define systemd service for spotifyd

modules/audio/spotify.nix

@@ -1,24 +1,37 @@
 { config, lib, pkgs, ... }:
 
-let unstable = import <nixpkgs-unstable> {};
-in
 {
+  # services.spotifyd doesn't work so we'll have to roll our own spotifyd +
+  # spotify-tui solution. I can't get the dbus interface doesn't work, though,
+  # so we have to wait for spotify-tui to implement CLI command for controlling
+  # spotify playback (see https://github.com/Rigellute/spotify-tui/issues/147)
+  # or for spotifyd to get fixed.
   environment.systemPackages = with pkgs; [
-    # services.spotifyd doesn't work so...
-    spotifyd
+    unstable.spotifyd
     (writeScriptBin "spt" ''
       #!${stdenv.shell}
-      if ! pgrep -x spotifyd >/dev/null; then
-        spotifyd --backend pulseaudio \
-                 --cache_path "$HOME/.cache/spotifyd" \
-                 --username accounts@v0.io \
-                 --password $(pass www/spotify.com)
+      if ! systemctl --user is-active spotifyd >/dev/null; then
+        systemctl --user start spotifyd
       fi
       ${unstable.spotify-tui}/bin/spt
     '')
 
     # spotify-tui is fine for selecting and playing music, but incomplete. We
-    # occasionally still need the official client.
+    # occasionally still need the official client for more sophisticated search
+    # and the "made for you" playlists.
     spotify
   ];
+
+  systemd.user.services.spotifyd.serviceConfig =
+    let spotifydConf = pkgs.writeText "spotifyd.conf" ''
+        [global]
+        username = accounts@v0.io
+        password_cmd = ${pkgs.pass}/bin/pass www/spotify.com | head -n1
+        backend = pulseaudio
+      '';
+    in {
+      ExecStart = "${pkgs.unstable.spotifyd}/bin/spotifyd --no-daemon --cache-path /tmp/spotifyd --config-path ${spotifydConf}";
+      Restart = "always";
+      RestartSec = 6;
+    };
 }