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Vyper Compiler — Agent Guide

Pythonic smart contract language targeting the EVM. v0.4.x, Python 3.11+.

Quick Commands

uv sync --extra dev              # install deps (per-worktree .venv, recommended)
uv run vyper contract.vy                # compile a contract
uv run vyper -f ir_runtime contract.vy  # inspect Venom IR
uv run vyper -f asm contract.vy         # inspect assembly
uv run ./quicktest.sh -m "not fuzzing"  # run tests (-nauto by default via setup.cfg)
uv run make lint                        # enforces code style (same as CI)

Architecture, Code Style, Entry Points

See skills/SKILL.md for compilation pipeline, directory map, code style, and key entry points.

Topic Deep-Dives

  • Venom IR — SSA IR design, passes, optimization, working with Venom code
  • Semantics & Frontend — Type system, analysis phases, namespace, validation
  • Code Generation — Legacy IR, Venom codegen, the two pipelines
  • Testing — Test structure, fixtures, running tests, writing new tests
  • Contributing — Commit message standards, PR workflow, code style summary