refactor: Move user config into modules/

modules/home/users/crumb/mpd.nix

@@ -0,0 +1,36 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.sydnix.users.crumb.mpd;
+in {
+  options.sydnix.users.crumb.mpd.enable =
+    lib.mkEnableOption "MPD, à la crumb";
+
+  config = lib.mkIf cfg.enable {
+    sydnix.sops.secrets = {
+      lastfm-password = {};
+      librefm-password = {};
+    };
+
+    sydnix.mpd = {
+      enable = true;
+      scrobbling.endpoints = {
+        "last.fm" = {
+          passwordFile =
+            "/home/crumb/.config/sops-nix/secrets/lastfm-password";
+          username = "crumb1";
+        };
+        "libre.fm" = {
+          passwordFile =
+            "/home/crumb/.config/sops-nix/secrets/librefm-password";
+          username = "crumbtoo";
+        };
+      };
+    };
+
+    # mpdscribble uses our password files, so it is imperative that the service
+    # runs only after said password files are brought into existence. }:)
+    systemd.user.services.mpdscribble.Unit.After = [ "sops-nix.service" ];
+  };
+}
+