How to setup a simple bazel build action from scratch

In this tutorial, I walk you through setting up a Bazel workspace and configuring it to execute custom Python tools efficiently. Whether you’re new to Bazel or looking to deepen your knowledge, this guide will simplify the process for you.

What You’ll Learn:
🔹 Workspace Setup in VS Code
I start by creating an empty folder in Visual Studio Code and adding the Bazel executable. You'll see how to create a workspace file that defines the Bazel project, forming the foundation for your setup.

🔹 Define Custom Build Rules
Learn how to create a build file and define custom build actions. I explain the syntax and structure needed to load and use custom rules effectively within your Bazel project.

🔹 Integrate a Custom Python Tool
Discover how to download a Python executable as an external tool using the HTTP archive rule. I show you how to configure a build file so that this Python tool can be leveraged in other build rules seamlessly.

🔹 Run a Python Script
I introduce a Python script that writes output to a text file and demonstrate how to execute it within the Bazel environment. You'll learn to pass parameters into custom build rules and manage output files through Bazel's efficient action execution process.

🔹 Test and Debug Builds
Finally, I test the build actions to ensure everything runs smoothly and produces the desired output. I also address common pitfalls in Bazel configuration and provide troubleshooting tips based on community feedback.

This tutorial equips you with the knowledge to set up, configure, and troubleshoot Bazel projects for Python, empowering you to take full advantage of this robust build tool.

📌 Keywords: Bazel Python project, Bazel workspace setup, custom build rules, Python integration with Bazel, Bazel debugging, HTTP archive rule, VS Code Bazel tutorial, Bazel action execution.