feat(etna): add slskd

systems/etna/slskd.nix

@@ -0,0 +1,36 @@
+{ config, _utils, ... }:
+let
+  envFile = _utils.setupSingleSecret config "slskdEnv" { };
+in
+{
+  imports = [ envFile.generate ];
+
+  cfTunnels."slsk.uku.moe" = "http://localhost:5030";
+
+  services.slskd = {
+    enable = true;
+    domain = "slsk.uku.moe";
+    environmentFile = envFile.path;
+    openFirewall = true;
+
+    settings = {
+      instance_name = "etna";
+      shares = {
+        directories = [ "/data/music" ];
+        filters = [
+          "\.ini$"
+          "\.fish$"
+        ];
+        cache = {
+          storage_mode = "memory";
+          retention = 10080; # 1 week
+        };
+      };
+
+      global.upload = {
+        slots = 20;
+        speed_limit = 10240; # 10 MiB
+      };
+    };
+  };
+}