mirror of
https://github.com/daylinmorgan/viv.git
synced 2024-12-22 18:50:43 -06:00
147 lines
4.9 KiB
Markdown
147 lines
4.9 KiB
Markdown
<!-- badges -->
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[![Stargazers][stars-shield]][stars-url]
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[![Issues][issues-shield]][issues-url]
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[![MIT License][license-shield]][license-url]
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[![PYPI][pypi-shield]][pypi-url]
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[](https://github.com/astral-sh/ruff)
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[](https://github.com/psf/black)
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[](https://pre-commit.com)
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[![Conda][conda-shield]][conda-url]
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<div align="center">
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<a href="https://github.com/daylinmorgan/viv">
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<img src="https://raw.githubusercontent.com/daylinmorgan/viv/main/assets/logo.svg" alt="Logo" width=500 >
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</a>
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<p align="center">
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<h1> viv isn't venv </h1>
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</p>
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<div align="center">
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<img
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src="https://raw.githubusercontent.com/daylinmorgan/viv/main/assets/viv-help.svg"
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alt="cli screenshot"
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width="500"
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>
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</div>
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<p align="center">
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<a href="https://viv.dayl.in">Documentation</a>
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</p>
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</div>
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Try before you buy!
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```sh
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python3 <(curl -fsSL viv.dayl.in/viv.py) run pycowsay -- "viv isn't venv\!"
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```
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---
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`Viv` is a standalone dependency-free `venv` creator [^1].
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`Viv` helps you ignore silly things like managing temporary or rarely used virtual environments,
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while still unleashing the full power of Python scripting with its entire ecosystem at your disposal.
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`Viv`'s uncompromising insistence on portability means that it will always:
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1. only use the standard library
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2. never exceed a single script.
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For that reason, any usage of the CLI can be accomplished using a remote copy as seen in the below install command.
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## Setup
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Run the below command to install `viv`.
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```sh
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python3 <(curl -fsSL viv.dayl.in/viv.py) manage install
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```
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To access `viv` from within scripts you should add its location to your `PYTHONPATH`.
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By default `viv` will be installed to `$XDG_DATA_HOME/viv` or `~/.local/share/viv`;
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you can customize this with `--src`.
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```sh
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export PYTHONPATH="$PYTHONPATH:$HOME/.local/share/viv"
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```
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### Pypi (Not Recommended)
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```sh
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pip install viv
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```
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Why is this *not recommended?* Mainly because `viv` is all about hacking your `sys.path`.
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Placing it in its own virtual environment or installing in a user site directory may complicate this endeavor.
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## Usage
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In any Python script with external dependencies you can add this line
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to automate `vivenv` creation and installation of dependencies.
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```python
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__import__("viv").use("click")
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```
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To remove all `vivenvs` you can use the below command:
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```sh
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viv env remove $(viv list -q)
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```
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To remove `viv` altogether you can use the included `purge` command:
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```sh
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python3 <(curl -fsSL viv.dayl.in/viv.py) manage purge
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```
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## Equivalent commands from alternatives
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### [pip-run](https://github.com/jaraco/pip-run)
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```sh
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pip-run cowsay -- -m cowsay "moove over, pip-run"
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python3 <(curl -fsSL viv.dayl.in/viv.py) run cowsay -- "moove over, pip-run"
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```
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```sh
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python -m pip-run requests -- -c "import requests; print(requests.get('https://pypi.org/project/pip-run').status_code)"
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python -m viv run requests -b python -- -c "import requests; print(requests.get('https://pypi.org/project/viv').status_code)"
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```
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### [pipx](https://github.com/pypa/pipx/)
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```sh
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pipx install pycowsay
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viv shim pycowsay
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```
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```sh
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pipx run https://gist.githubusercontent.com/cs01/fa721a17a326e551ede048c5088f9e0f/raw/6bdfbb6e9c1132b1c38fdd2f195d4a24c540c324/pipx-demo.py
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python3 <(curl -fsSL viv.dayl.in/viv.py) run \
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-s https://gist.githubusercontent.com/cs01/fa721a17a326e551ede048c5088f9e0f/raw/6bdfbb6e9c1132b1c38fdd2f195d4a24c540c324/pipx-demo.py
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```
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## Bonus: use `viv` with just standalone snippet (37LOC)
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`--standalone` will auto-generate a mini-function version of `viv`
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to accomplish the same basic task as using a local copy of `viv`.
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After generating this standalone shim you can freely use this script
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across Unix machines which have Python > 3.8.
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See [examples/black](https://github.com/daylinmorgan/viv/blob/dev/examples/black)
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for output of the below command.
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`viv freeze` also supports `--standalone`.
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```sh
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python3 <(curl -fsSL viv.dayl.in/viv.py) shim black -o ./black --standalone --freeze
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```
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[^1]: You do need to have `pip` but surely you have `pip` already.
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[conda-shield]: https://img.shields.io/conda/vn/conda-forge/viv
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[conda-url]: https://anaconda.org/conda-forge/viv
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[pypi-shield]: https://img.shields.io/pypi/v/viv
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[pypi-url]: https://pypi.org/project/viv
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[stars-shield]: https://img.shields.io/github/stars/daylinmorgan/viv.svg
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[stars-url]: https://github.com/daylinmorgan/viv/stargazers
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[issues-shield]: https://img.shields.io/github/issues/daylinmorgan/viv.svg
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[issues-url]: https://github.com/daylinmorgan/viv/issues
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[license-shield]: https://img.shields.io/github/license/daylinmorgan/viv.svg
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[license-url]: https://github.com/daylinmorgan/viv/blob/main/LICENSE
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