home: wm: i3: simplify status command

The v0.30.0 of `i3status-rs` automatically resolves a configuration name
inside its configuration directory, making this much simpler.

home/wm/i3/default.nix

@@ -73,14 +73,11 @@ in
 
         bars =
           let
-            barConfigPath =
+            i3status-rs = lib.getExe config.programs.i3status-rust.package;
-              config.xdg.configFile."i3status-rust/config-top.toml".target;
-            i3status-rs =
-              "${config.programs.i3status-rust.package}/bin/i3status-rs";
           in
           [
             {
-              statusCommand = "${i3status-rs} ~/${barConfigPath}";
+              statusCommand = "${i3status-rs} config-top.toml";
               trayOutput = "primary";
               position = "top";