diff --git a/common/vscode.nix b/common/vscode.nix
index 6aaaeec..3de8349 100755
--- a/common/vscode.nix
+++ b/common/vscode.nix
@@ -59,6 +59,9 @@
      "window.enableMenuBarMnemonics" = false;
      "ltex.sentenceCacheSize" = 50000;
      "ltex.java.maximumHeapSize" = 8192;
+     "ltex.latex.environments" = {
+      "tikzcd" = "ignore";
+     };
      "editor.tabSize" = 2;
      "explorer.excludeGitIgnore" = true;
      "files.exclude" = {
diff --git a/shinx/default.nix b/shinx/default.nix
index 28ab0d2..01ccc69 100755
--- a/shinx/default.nix
+++ b/shinx/default.nix
@@ -1,11 +1,8 @@
-# hosts/YourHostName/default.nix
 { pkgs, home-manager, inputs, ... }@mod-inputs:
 {
 
   # Make sure the nix daemon always runs
   services.nix-daemon.enable = true;
-  # Installs a version of nix, that dosen't need "experimental-features = nix-command flakes" in /etc/nix/nix.conf
-  #services.nix-daemon.package = pkgs.nixFlakes;
   
   # if you use zsh (the default on new macOS installations),
   # you'll need to enable this so nix-darwin creates a zshrc sourcing needed environment changes
@@ -24,4 +21,14 @@
   fonts.fonts = [
     pkgs.mononoki
   ];
+
+
+  # automatically garbage collect and optimise
+  nix.gc = {
+    automatic = true;
+    interval = { Weekday = 0; Hour = 0; Minute = 0; };
+    options = "--delete-older-than 30d";
+  };
+
+  nix.settings.auto-optimise-store = true;
 }