programs: ship cantata & mopidy for music playing (desktop)

hosts/common/programs/cantata.nix

@@ -0,0 +1,36 @@
+# cantata is a mpd frontend.
+# before launching it, run `mopidy` in some tab
+# TODO: auto-launch mopidy when cantata launches?
+{ ... }:
+{
+  sane.programs.cantata = {
+    persist.plaintext = [
+      ".cache/cantata"  # album art
+      ".local/share/cantata/library"  # library index (?)
+    ];
+    fs.".config/cantata/cantata.conf".symlink.text = ''
+      [General]
+      fetchCovers=true
+      storeCoversInMpdDir=false
+      version=2.5.0
+
+      [Connection]
+      allowLocalStreaming=true
+      applyReplayGain=true
+      autoUpdate=false
+      dir=~/Music
+      host=localhost
+      partition=
+      passwd=
+      port=6600
+      replayGain=off
+      streamUrl=
+
+      [LibraryPage]
+      artist\gridZoom=100
+      artist\searchActive=false
+      artist\viewMode=detailedtree
+    '';
+    suggestedPrograms = [ "mopidy" ];
+  };
+}

hosts/common/programs/default.nix

@@ -4,6 +4,7 @@
   imports = [
     ./aerc.nix
     ./assorted.nix
+    ./cantata.nix
     ./chatty.nix
     ./cozy.nix
     ./element-desktop.nix

hosts/common/programs/mopidy.nix

@@ -1,19 +1,86 @@
+# load the web client at:
+# - <http://localhost:6680>
+# chat:
+# - <https://mopidy.zulipchat.com/>
+# update local file index with
+# - `mopidy --config ... local scan`
+# mopidy hosts mpd (when enabled) at localhost:6600; no password
 { config, lib, pkgs, ... }:
+
+let
+  # TODO: upstream this as `mopidy.withExtensions`
+  # this is borrowed from the nixos mopidy service
+  mopidyWithExtensions = extensions: with pkgs; buildEnv {
+    name = "mopidy-with-extensions-${mopidy.version}";
+
+    paths = lib.closePropagation extensions;
+    pathsToLink = [ "/${mopidyPackages.python.sitePackages}" ];
+    nativeBuildInputs = [ makeWrapper ];
+    postBuild = ''
+      makeWrapper ${mopidy}/bin/mopidy $out/bin/mopidy \
+        --prefix PYTHONPATH : $out/${mopidyPackages.python.sitePackages}
+    '';
+  };
+in
 {
   sane.programs.mopidy = {
-  };
+    package = mopidyWithExtensions (with pkgs; [
-  services.mopidy = lib.mkIf config.sane.programs.mopidy.enabled {
+      mopidy-iris  # web client: <https://github.com/jaedb/Iris>
-    enable = true;
-    extensionPackages = with pkgs; [
       mopidy-jellyfin
+      mopidy-local
       mopidy-mpd
       mopidy-mpris
       mopidy-spotify
       # TODO: mopidy-podcast, mopidy-youtube
-    ];
 
-    # config docs: <https://docs.mopidy.com/en/latest/config/>
+      # alternate web clients:
-    # query current config with: `sudo mopidyctl config`
+      # mopidy-moped: <https://github.com/martijnboland/moped>
-    # configuration = "";
+      # mopidy-muse: <https://github.com/cristianpb/muse>
+    ]);
+    persist.plaintext = [
+      ".local/share/mopidy/local"  # thumbs, library db
+    ];
+    persist.private = [
+      ".local/share/mopidy/http"  # cookie
+    ];
+    secrets.".config/mopidy/mopidy.conf" = ../../../secrets/common/mopidy.conf.bin;
+    # other folders:
+    # - .cache/mopidy
+    # - .config/mopidy
   };
+  # services.mopidy = lib.mkIf config.sane.programs.mopidy.enabled {
+  #   enable = true;
+  #   extensionPackages = with pkgs; [
+  #     mopidy-iris  # web client: <https://github.com/jaedb/Iris>
+  #     mopidy-jellyfin
+  #     mopidy-local
+  #     mopidy-mpd
+  #     mopidy-mpris
+  #     mopidy-spotify
+  #     # TODO: mopidy-podcast, mopidy-youtube
+
+  #     # alternate web clients:
+  #     # mopidy-moped: <https://github.com/martijnboland/moped>
+  #     # mopidy-muse: <https://github.com/cristianpb/muse>
+  #   ];
+
+  #   # config docs: <https://docs.mopidy.com/en/latest/config/>
+  #   # to query config:
+  #   # - `systemctl cat mopidy`
+  #   # - copy the Exec line, then run it as daemon user with `config` arg, e.g.
+  #   # - `sudo -u mopidy /nix/store/975g6qzz72ajsj7qcmq8123jbr0iq7fg-mopidy-with-extensions-3.4.1/bin/mopidy --config /nix/store/678mid699jcz4y56avyg4nsmjy0zmp7v-mopidy.conf config`
+  #   configuration = ''
+  #     [file]
+  #     media_dirs =
+  #       /home/colin/Music
+
+  #     [iris]
+  #     country = US
+  #     locale = en_US
+  #   '';
+  #   # TODO:
+  #   # set spotify.username, spotify.password, jellyfin....
+  #   # but these are secret so can't go in the above configuration line
+  #   # there is a configurationFiles option, though.
+  # };
 }

hosts/modules/gui/default.nix

@@ -41,7 +41,7 @@
       # "lollypop"
       "mate.engrampa"  # archive manager
       "mepo"  # maps viewer
-      "mopidy"  # music server (like mpd)
+      "cantata"  # music player (mpd frontend)
       "mpv"
       # "networkmanagerapplet"
       # "newsflash"

secrets/common/mopidy.conf.bin

@@ -0,0 +1,48 @@
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+}