Skip to content

Jarvy vs mise

A comparison of Jarvy and mise (formerly rtx) for developer environment management.

Quick Comparison

Feature Jarvy mise
Purpose Full environment provisioning Runtime version management
Scope 40+ tools (runtimes, apps, CLIs) Language runtimes only
Config Format jarvy.toml .mise.toml / .tool-versions
Mechanism Native package managers Shims + plugin system
Version Switching Single version per tool Multiple versions, per-directory
Language Rust Rust

When to Choose Jarvy

  • New machine setup - Bootstrap a fresh laptop with all development tools
  • Full environment provisioning - Need Docker, VS Code, Terraform, not just runtimes
  • Team onboarding - Single config file gets new devs productive
  • Cross-platform teams - macOS, Linux, and Windows support with native installers
  • Simple mental model - Tools installed globally via familiar package managers

When to Choose mise

  • Version switching - Need Node 18 for project A, Node 20 for project B
  • Per-directory versions - Automatic version switching when cd-ing into projects
  • asdf compatibility - Already using .tool-versions files
  • Runtime-only needs - Only managing language versions, not full applications
  • Plugin ecosystem - Need support for obscure runtimes via community plugins

Key Differentiators

Jarvy's Approach

  • Installs tools system-wide using Homebrew, apt, winget
  • Provisions complete environments: Docker, VS Code, Terraform, AWS CLI, etc.
  • One-time setup per machine
  • Tools available everywhere, not just in specific directories

mise's Approach

  • Manages runtime versions via shims that intercept commands
  • Per-project version pinning with automatic switching
  • Plugin architecture inherited from asdf ecosystem
  • Focused exclusively on language runtimes and dev tools

Can They Work Together?

Yes. A complementary setup:

  1. Jarvy provisions the base - Docker, VS Code, Terraform, Homebrew, and mise itself
  2. mise manages runtimes - Node, Python, Ruby versions per project
# jarvy.toml - provision the machine
[tools]
docker = "latest"
vscode = "latest"
terraform = "1.5"
mise = "latest"  # Install mise via Jarvy

# .mise.toml - manage runtime versions per project
[tools]
node = "20.10.0"
python = "3.12"

This gives you the best of both: full environment provisioning with Jarvy, fine-grained version management with mise.