added go, zig, and ruby, as well as environment

modules/dev/zig.nix

@@ -0,0 +1,33 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  packages = builtins.attrValues {
+    inherit (pkgs)
+      zig # Zig compiler and stdlib
+      zls # Language server for Zig
+      ;
+  };
+in
+{
+  options = {
+    my.dev.zig.enable = lib.mkEnableOption "Install Zig tooling globally";
+    devShells.zig = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.mkShell {
+        inherit packages;
+        name = "zig-dev-shell";
+        shellHook = ''
+          echo "🦎 Zig dev environment"
+        '';
+      };
+      description = "Zig development shell with compiler and LSP";
+    };
+  };
+  config = lib.mkIf config.my.dev.zig.enable {
+    users.users.jawz = { inherit packages; };
+  };
+}