mopidy: make scan service depend on mopidy-local

modules/services/mopidy.nix

@@ -48,6 +48,8 @@ let
   configFilePaths = concatStringsSep ":"
     ([ "${config.xdg.configHome}/mopidy/mopidy.conf" ] ++ cfg.extraConfigFiles);
 
+  hasMopidyLocal = builtins.elem pkgs.mopidy-local cfg.extensionPackages;
+
 in {
   meta.maintainers = [ hm.maintainers.foo-dogsquared ];
 
@@ -133,7 +135,7 @@ in {
       Install.WantedBy = [ "default.target" ];
     };
 
-    systemd.user.services.mopidy-scan = {
+    systemd.user.services.mopidy-scan = mkIf hasMopidyLocal {
       Unit = {
         Description = "mopidy local files scanner";
         Documentation = [ "https://mopidy.com/" ];

tests/modules/services/mopidy/basic-configuration.nix

@@ -3,6 +3,7 @@
 {
   services.mopidy = {
     enable = true;
+    extensionPackages = [ ];
     settings = {
       file = {
         enabled = true;
@@ -29,7 +30,7 @@
 
   nmt.script = ''
     assertFileExists home-files/.config/systemd/user/mopidy.service
-    assertFileExists home-files/.config/systemd/user/mopidy-scan.service
+    assertPathNotExists home-files/.config/systemd/user/mopidy-scan.service
 
     assertFileExists home-files/.config/mopidy/mopidy.conf
     assertFileContent home-files/.config/mopidy/mopidy.conf \

tests/modules/services/mopidy/default.nix

@@ -1 +1,5 @@
-{ mopidy-basic-configuration = ./basic-configuration.nix; }
+{
+  mopidy-basic-configuration = ./basic-configuration.nix;
+  mopidy-scan = ./mopidy-scan.nix;
+}
+

tests/modules/services/mopidy/mopidy-scan.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, ... }:
+
+{
+  services.mopidy = {
+    enable = true;
+    extensionPackages = [ pkgs.mopidy-local ];
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/systemd/user/mopidy.service
+    assertFileExists home-files/.config/systemd/user/mopidy-scan.service
+  '';
+}