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I Built a Programming Language Called Zen Building a programming language had been something I wanted to do for a long time. What I didn't realize when I started was how much work exists beyond parsing a few tokens and generating some code. A language is not just a parser or a compiler backend. It is tooling, developer experience, documentation, installation, error handling, runtime support, and countless design decisions. After multiple attempts and many lessons learned, I'm excited to share Zen. Why a Third Attempt? Zen is not the first language project I started. My first attempts taught me a lot, but they never reached a stage where I felt comfortable sharing them publicly. The architecture was incomplete, important components were missing, and the overall developer experience wasn't where I wanted it to be. Instead of abandoning the idea, I kept iterating. Each attempt helped me better understand: Compiler architecture Language design LLVM Runtime integration Tooling and usability Error handling Project structure Zen is the result of those lessons. What Is Zen? Zen is a programming language with its own compiler pipeline and LLVM-based backend. The goal was not just to generate code, but to create a complete language ecosystem that developers can actually install and use. Zen currently includes: Lexer Parser AST generation LLVM IR generation Native executable generation through LLVM Runtime integration Standard library integration Command-line tooling Installation system Documentation website Compiler Pipeline The compilation process follows a traditional compiler architecture: Source Code ↓ Lexer ↓ Parser ↓ AST ↓ LLVM IR Generation ↓ LLVM Optimization ↓ Object Files ↓ Native Executable LLVM handles optimization and machine code generation, allowing Zen to produce native binaries. Command Line Interface Zen provides several commands for development and inspection: zen run zen build zen ir zen ast zen tokens zen clean This allows users to inspect different stage

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