diff --git a/home/mako.nix b/home/mako.nix
index 2fe5a18..4eb94cd 100644
--- a/home/mako.nix
+++ b/home/mako.nix
@@ -44,6 +44,14 @@ in
       default-timeout = 15000;
       border-radius = 24;
       border-color = "#${palette.base08}FF";
+
+      "mode=silent" = {
+        invisible = true; # hide all notifications
+        actions = false;
+        icons = false;
+        default-timeout = 0;
+      };
+
     };
 
   };
diff --git a/modules/develPackages.nix b/modules/develPackages.nix
index 44ec5dd..bf2a6be 100644
--- a/modules/develPackages.nix
+++ b/modules/develPackages.nix
@@ -36,6 +36,8 @@
     valgrind
     fontconfig
 
+    plantuml
+
     rustup
     rustfmt
     treefmt
diff --git a/modules/nix.nix b/modules/nix.nix
index 4da594b..2c3d207 100644
--- a/modules/nix.nix
+++ b/modules/nix.nix
@@ -59,7 +59,10 @@
         #system = "x86_64-linux";
         # if the builder supports building for multiple architectures,
         # replace the previous line by, e.g.,
-        systems = ["x86_64-linux" "aarch64-linux"];
+        systems = [
+          "x86_64-linux"
+          "aarch64-linux"
+        ];
         maxJobs = 6;
         speedFactor = 6001;
         supportedFeatures = [ ];