diff --git a/hosts/heraclitus/darwin-configuration.nix b/hosts/heraclitus/darwin-configuration.nix
index f2bf826..e8fd107 100644
--- a/hosts/heraclitus/darwin-configuration.nix
+++ b/hosts/heraclitus/darwin-configuration.nix
@@ -4,6 +4,7 @@
     ./homebrew.nix
 
     ../../modules/base/darwin.nix
+    ../../modules/dev
     ../../modules/builder
   ];
 
diff --git a/modules/dev/default.nix b/modules/dev/default.nix
new file mode 100644
index 0000000..4d94873
--- /dev/null
+++ b/modules/dev/default.nix
@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+{
+  environment.systemPackages = with pkgs; [
+    emacs
+
+    # Elixir
+    elixir
+
+    # Golang
+    go
+    gopls
+
+    # Node/JS
+    deno
+    nodejs
+    yarn
+
+    # Rust
+    rustup
+    rust-analyzer
+  ];
+}