music-assistant: fix evaluation of provider packages

When provider packages have no dependencies we still need to make them a
function, as to have a generic interface to transform these attributes
into python packages of the passed package set.

pkgs/by-name/mu/music-assistant/providers.nix

@@ -3,11 +3,11 @@
 {
   version = "2.2.3";
   providers = {
-    airplay = [
+    airplay = ps: [
     ];
-    apple_music = [
+    apple_music = ps: [
     ]; # missing pywidevine
-    builtin = [
+    builtin = ps: [
     ];
     chromecast = ps: with ps; [
       pychromecast
@@ -18,11 +18,11 @@
     dlna = ps: with ps; [
       async-upnp-client
     ];
-    fanarttv = [
+    fanarttv = ps: [
     ];
-    filesystem_local = [
+    filesystem_local = ps: [
     ];
-    filesystem_smb = [
+    filesystem_smb = ps: [
     ];
     fully_kiosk = ps: with ps; [
       python-fullykiosk
@@ -30,12 +30,12 @@
     hass = ps: with ps; [
       hass-client
     ];
-    hass_players = [
+    hass_players = ps: [
     ];
     jellyfin = ps: with ps; [
       aiojellyfin
     ];
-    musicbrainz = [
+    musicbrainz = ps: [
     ];
     opensubsonic = ps: with ps; [
       py-opensonic
@@ -43,7 +43,7 @@
     plex = ps: with ps; [
       plexapi
     ];
-    qobuz = [
+    qobuz = ps: [
     ];
     radiobrowser = ps: with ps; [
       radios
@@ -60,23 +60,23 @@
       soco
       sonos-websocket
     ];
-    soundcloud = [
+    soundcloud = ps: [
     ]; # missing soundcloudpy
     spotify = ps: with ps; [
       pkce
     ];
-    template_player_provider = [
+    template_player_provider = ps: [
     ];
-    test = [
+    test = ps: [
     ];
-    theaudiodb = [
+    theaudiodb = ps: [
     ];
     tidal = ps: with ps; [
       tidalapi
     ];
-    tunein = [
+    tunein = ps: [
     ];
-    ugp = [
+    ugp = ps: [
     ];
     ytmusic = ps: with ps; [
       yt-dlp

pkgs/by-name/mu/music-assistant/update-providers.py

@@ -24,7 +24,7 @@ TEMPLATE = """# Do not edit manually, run ./update-providers.py
   version = "{{ version }}";
   providers = {
 {%- for provider in providers | sort(attribute='domain') %}
-    {{ provider.domain }} = {% if provider.available %}ps: with ps; {% endif %}[
+    {{ provider.domain }} = {% if provider.available %}ps: with ps;{% else %}ps:{% endif %} [
 {%- for requirement in provider.available | sort %}
       {{ requirement }}
 {%- endfor %}