https://github.com/t184256/nixpkgs-python-importer

Violate Nix philosophy, install Python packages mid-session with `from nixpkgs.scipy import scipy`.
https://github.com/t184256/nixpkgs-python-importer

importlib nix nixos nixpkgs python

Last synced: 4 months ago
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Violate Nix philosophy, install Python packages mid-session with `from nixpkgs.scipy import scipy`.

• Host: GitHub
• URL: https://github.com/t184256/nixpkgs-python-importer
• Owner: t184256
• License: mit
• Created: 2018-09-21T09:43:14.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2019-08-22T20:46:44.000Z (over 5 years ago)
• Last Synced: 2024-09-28T09:20:26.859Z (4 months ago)
• Topics: importlib, nix, nixos, nixpkgs, python
• Language: Python
• Homepage:
• Size: 18.6 KB
• Stars: 31
• Watchers: 6
• Forks: 3
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# nixpkgs-python-importer

## What

An importlib hack that allows `from nixpkgs.pythonpackagename import modulename`.

Examples:

    from nixpkgs.scipy import scipy

    import nixpkgs.scipy.scipy

    from nixpkgs.matplotlib.matplotlib import pyplot as plt

    import nixpkgs.matplotlib.matplotlib.pyplot as plt

    from nixpkgs.pillow.PIL import Image

## Why

I used to be a researcher who used `python` and `xonsh` interactively a lot.

While I appreciate the purity of Nix, sometimes I really want to violate it

and pull in some dependency into my shell *right now*,

without tearing my session down, editing and rebuilding an environment,

and then recreating my session from history.

A convenient way of spawning a `xonsh` instance with an extra dependency

soothes the nerves a bit, but doesn't really free me from the recreation part.

I started writing a `xonsh` macro that ended up being a generic Python solution

with a pleasingly nice syntax. I mean, `from nixpkgs.scipy import scipy`.

Ain't that nice?

## How

`importlib` magic

## Try

The quickest way to try it would be (on a recent NixOS):

```

nix run '(import  {}).python3.withPackages(ps:[ps.nixpkgs])' -c python

```

then try `from nixpkgs.pbr import pbr` (or any other package).

If that doesn't work, you may also try your luck with unstable nixpkgs:

```

nix run -f channel:nixos-unstable '(import  {}).python3.withPackages(ps:[ps.nixpkgs])' -c python

```