How to choose between uvx and pipx for Python CLI tools in 2026

Mar 5, 2026

Purpose

When I want to install Python CLI tools like ruff, black, or httpie in isolated environments, I need a reliable way to manage them without polluting my system Python. For years, pipx was the go-to solution. But recently I noticed Reddit users reporting problems with pipx, and I discovered that uv (the new Rust-based Python package manager) offers alternatives: uvx and uv tool install.

This post shows how to choose between uvx, uv tool install, and pipx for managing Python CLI tools.

What’s the Problem with pipx?

I used pipx for years. It worked well for installing CLI tools in isolated virtual environments. But I kept seeing concerning reports from other developers.

One Reddit user said:

“I used to use pipx for this but wow, pipx is not ready for production environments and has all kinds of problems”

Another developer mentioned:

“I consider uvx mainly for beginners because they don’t need to know how to ensure their path includes ~/.local/bin/”

These comments made me wonder: is there a better option in 2026?

Enter uv: The Modern Alternative

uv is a Python package manager written in Rust by Astral (the team behind Ruff). According to their benchmarks, uv is 10-100x faster than pip.

uv offers two commands for CLI tools:

uvx (alias for uv tool run): Run tools without installing them
uv tool install: Install tools permanently

Both provide isolated environments like pipx, but with uv’s speed and additional features.

uvx vs uv tool install vs pipx: Comparison

Feature	uvx	uv tool install	pipx
Installation	None (ephemeral)	Permanent	Permanent
Speed	10-100x faster	Fast	Slow
Python version	`--python 3.10`	`--python 3.10`	Limited
PATH config	Not needed	Not needed	Required
Production ready	Yes	Yes	Questionable
Plugins	Yes (`--with`)	Yes (`--with`)	No
Git sources	Yes	Yes	No

The key difference: uvx runs tools ephemerally (no installation), while uv tool install creates permanent executables.

When to Use uvx (Ephemeral Execution)

I use uvx when I need to run a tool once or test different versions:

# Run once without installation
uvx pycowsay 'hello world!'

# Specific Python version
uvx --python 3.10 ruff check .

# Auto-download Python and run
uvx [email protected] -c "print('hello')"

# Test different tool versions
uvx --python 3.11 httpie GET httpbin.org/get

The tool runs in an isolated environment, then disappears. This is perfect for CI/CD pipelines or testing.

When to Use uv tool install (Permanent Installation)

I use uv tool install for tools I run frequently:

# Install ruff permanently
uv tool install ruff

# With version constraint
uv tool install 'ruff>0.5.0'

# From git
uv tool install git+https://github.com/astral-sh/ruff

# With plugins
uv tool install mkdocs --with mkdocs-material

# Upgrade all tools at once
uv tool upgrade --all

The installed tools become available in my PATH, just like pipx.

Why uv is Better than pipx

1. Speed

uv is written in Rust, making it 10-100x faster than pipx (which is pure Python). When I install tools or create environments, the difference is noticeable.

2. Python Version Control

Both uvx and uv tool install support the --python flag:

uvx --python 3.10 ruff check .
uv tool install ruff --python 3.11

If the specified Python version isn’t installed, uv downloads it automatically. This is a huge improvement over pipx’s limited Python version handling.

3. No PATH Configuration

pipx requires adding ~/.local/bin/ to PATH. Many beginners struggle with this.

uv handles PATH configuration automatically. One Reddit user said:

“I consider uvx mainly for beginners because they don’t need to know how to ensure their path includes ~/.local/bin/”

4. Plugin Support

uv supports installing tools with additional packages:

# Install mkdocs with the material theme
uv tool install mkdocs --with mkdocs-material

pipx doesn’t have this feature.

5. Git Sources

uv can install directly from git:

uv tool install git+https://github.com/httpie/cli

Migration from pipx to uv

Migrating is straightforward:

# Old pipx way
pipx install ruff

# New uv way
uv tool install ruff

# Or just run with uvx (no install needed)
uvx ruff check .

For one-off commands, I now use uvx instead of installing with pipx.

Which Should You Choose?

Use uvx when:

You need to run a tool once or occasionally
Testing different versions of a tool
In CI/CD pipelines
You want ephemeral, clean environments

Use uv tool install when:

You use the tool frequently
You want the tool available in PATH
You need to manage multiple installed tools

Avoid pipx in 2026 when:

Speed matters
You need Python version control
You want plugin support
You’re in a production environment

Summary

In this post, I compared uvx, uv tool install, and pipx for managing Python CLI tools. The key takeaway is that uv is 10-100x faster than pipx and offers better features like Python version control, plugin support, and automatic PATH configuration.

One Reddit user summarized it well:

“for all the same use cases as pipx just about when i want to install a cli tool and have it sequestered into its own venv and i want to define which python version it uses”

uv handles this use case better than pipx. Use uvx for one-off commands and uv tool install for tools you use frequently. Your Python CLI workflow will be faster and more reliable.

Final Words + More Resources

My intention with this article was to help others share my knowledge and experience. If you want to contact me, you can contact by email: Email me

Here are also the most important links from this article along with some further resources that will help you in this scope:

Oh, and if you found these resources useful, don’t forget to support me by starring the repo on GitHub!