works now?

modules/programs/btop.nix

@@ -0,0 +1,12 @@
+{
+	flake.modules.homeManager.btop = { pkgs, ... }: {
+		programs.btop = {
+			enable = true;
+			settings = {
+				vim_keys = true;
+				proc_tree = true;
+				proc_aggregate = true;
+			};
+		};
+	};
+}