diff --git a/configuration.nix b/configuration.nix
index 02cbd42..c0eda86 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -160,6 +160,7 @@
     iw
     jq
     koka
+    kdePackages.kalk
     nix-index
     nodePackages.nodejs
     ntfs3g
@@ -180,6 +181,9 @@
         bbenoist.nix
         svelte.svelte-vscode
         bradlc.vscode-tailwindcss
+        ms-vscode.cpptools-extension-pack
+        ionide.ionide-fsharp
+        haskell.haskell
 
         (pkgs.vscode-utils.extensionFromVscodeMarketplace {
           name = "silver-rainbow";