fix: replace nix by devbox

Author: devthejo

.envrc

@@ -1,2 +1,2 @@
-# Automatically load the Nix flake environment
-use flake
+# Automatically load the Devbox environment
+eval "$(devbox generate direnv --print-envrc)"

README.md

@@ -69,7 +69,7 @@ For more details on chart configuration options, see the [chart documentation](c
 ### Prerequisites
 
 - [direnv](https://direnv.net/)
-- [Nix](https://nixos.org/download.html)
+- [Devbox](https://www.jetify.com/devbox/docs/installing_devbox/)
 
 ### Setting Up the Development Environment
 
@@ -80,17 +80,42 @@ For more details on chart configuration options, see the [chart documentation](c
    cd crossplane-function-js
    ```
 
-2. Allow direnv:
+2. Allow direnv to load the Devbox environment:
 
    ```bash
    direnv allow
    ```
 
+   This will automatically activate the Devbox development environment with all required tools:
+   - Node.js (latest)
+   - Go (latest)
+   - Yarn (latest)
+   - Kubernetes tools (kubectl, helm, kind, k9s)
+   - Development utilities (jq, go-task)
+
 3. Install dependencies:
    ```bash
    yarn
    ```
 
+### Development Tools
+
+The development environment provides the following tools via Devbox:
+
+- **Node.js**: Latest version for JavaScript/TypeScript development
+- **Go**: Latest version for the gRPC server
+- **Yarn**: Package manager for Node.js dependencies
+- **kubectl**: Kubernetes command-line tool
+- **Helm**: Kubernetes package manager
+- **Kind**: Kubernetes in Docker for local testing
+- **K9s**: Terminal-based Kubernetes cluster management
+- **jq**: JSON processor for data manipulation
+- **go-task**: Task runner for development workflows
+
+The environment is automatically configured with:
+- `KUBECONFIG` set to `$PWD/.kubeconfig` for local cluster management
+- All tools available in the shell PATH
+
 ## Usage
 
 ### Creating a Composition with Inline Code

devbox.json

@@ -0,0 +1,36 @@
+{
+    "$schema": "https://raw.githubusercontent.com/jetify-com/devbox/0.16.0/.schema/devbox.schema.json",
+    "packages": [
+      "git",
+      "nodejs@latest",
+      "yarn@latest",
+      "jq@latest",
+      "go@latest",
+      "go-task@latest",
+      "kubectl@latest",
+      "kubernetes-helm@latest",
+      "kind@latest",
+      "k9s@latest"
+    ],
+    "shell": {
+      "init_hook": [
+        "# Set up local KUBECONFIG",
+        "export KUBECONFIG=\"$PWD/.kubeconfig\"",
+        "",
+        "# Create .kubeconfig if it doesn't exist",
+        "if [ ! -f \"$KUBECONFIG\" ]; then",
+        "  echo \"Creating empty .kubeconfig file\"",
+        "  touch \"$KUBECONFIG\"",
+        "fi",
+        "",
+        "echo \"KUBECONFIG set to $KUBECONFIG\"",
+        "echo \"Development environment ready with latest tools!\""
+      ],
+      "scripts": {
+        "test": [
+          "echo \"Error: no test specified\" && exit 1"
+        ]
+      }
+    }
+  }
+