nix-direnv
mach-nix
nix-direnv | mach-nix | |
---|---|---|
27 | 23 | |
1,460 | 831 | |
3.7% | - | |
9.0 | 5.7 | |
8 days ago | about 2 months ago | |
Nix | Python | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
nix-direnv
- A faster, persistent implementation of direnv's use_Nix and use_flake
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How do multiple versions of the package internally work?
BTW: I personally use direnv with nix-direnv. This basically works by setting your shell with proper tooling when you enter the directory.
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I have a few beginner question, what is the difference between nix shell/env and what is the difference between flakes/home-manager?
I'm not sure what you mean by nix env, maybe you are referring to nix-direnv?
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Just a reminder to make sure Garbage Collection is running
Although currently I'm using direnv + nix-direnv. Keep in mind that direnv has builtin nix support which is very basic and doesn't do any caching. So you still needs this add-on to preserve roots.
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What do you install with configuration.nix and home manager
I distinguish between system level things and user level things, even though I don't really have different users on my machine. I install the bare minimum number of packages + a lot of different drivers in the configuration.nix, and desktop and editor related things in HM. For development environment, I have environment per project using mkShell and https://github.com/nix-community/nix-direnv, which allows you to switch to the specific environment once you cd into the directory. (Although I do have python installed globally with some commonly used packages such as numpy, so I can just start python and write something when I need to, without creating an environment)
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How do YOU use your PKMS?
I further make my software projects so that when I click a link I go into an environment pre-loaded with their dependencies so dropping in/out of projects is always frictionless. I do this with the reproducibility guarantees of nix, along with glue like nix-direnv and envrc-mode to direnv.
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Nuenv: an experimental Nushell environment for Nix
(I also use nix-direnv)
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NixOS + Haskell best practices circa March 2023
direnv
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Minimal approach for python devel environment with flake
Personally I use nix-direnv. No longer the need to run nix develop or nix-shell. By setting up a .envrc with either use nix or use flake it will automatically install all the packages from default/shell.nix or flake.nix
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Nix and envrc
Direnv is installed using the nix-direnv installation instructions under "Via configuration.nix in NixOS". I read some recommendations that envrc.el is a better alternative then direnv.el, and after some testing I have to agree. (envrc-global-mode) is enabled in my config. This works perfectly with a normal emacs instance.
mach-nix
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Installing chatgpt-wrapper
Another way if the above doesn't work is to use mach-nix:https://github.com/DavHau/mach-nix
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How to install pip3
For python, I can highly recommend mach-nix. Makes it really easy to also keep a requirements.txt to stay compatible with non-nix-users.
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Updated ESP-IDF and MicroPython expressions
The ESP32 toolchain is quite cumbersome to install - even under NixOS. The wiki tells you to create a shell.nix that creates a python virtual env at the first execution. I used DavHau's mach-nix to create esp-idf.nix and subsequently micropython-esp32.nix.
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Share your Data Science stack in Nixpkgs
mach-nix and friends are pretty good, but I've found that the expectations of all the commonly-used data science stuff is pretty antithetical to the Nix Way. I'm not sure if it's still the case, but last I tried, Hydra wasn't building CUDA (since it's non-free), so I had to compile that and e.g. TensorFlow and PyTorch. Very painful, even on a beefy system.
- how to install Python packages not yet in the Nix repo?
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Help with installing python packages.
I don't do much Python, but usually everything works just fine with mach-nix. I would try something like this: ``` { pkgs ? import (fetchTarball "https://github.com/nixos/nixpkgs/archive/nixpkgs-unstable.tar.gz") { } }:
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Nix: Taming Unix with Functional Programming
There are some sifferent/new tools for adding your own Python packages these days. It's still not truly solved, but one of these new package generation tools might serve your better:
poetry2nix: https://github.com/nix-community/poetry2nix
dream2nix: https://nix-community.github.io/dream2nix/guides/getting-sta...
mach-nix: https://github.com/DavHau/mach-nix
pip2nix: https://github.com/nix-community/pip2nix
pynixify: https://github.com/cript0nauta/pynixify
The tools available to you at the time (pypi2nix and maybe python2nix, if it was a long time ago) have been abandoned in favor of the newer tools, I think chiefly poetry2nix but I'm not sure.
There's still the Nixpkgs buildPythonPackage stuff, I think, if your goal is to upstream a lib into Nixpkgs. But if you just want to build your own Python applications and vendorize the deps (e.g., for work), you might try one of the tools above, which weren't available 3+ years ago. Maybe Nixy Python users and developers can reply with some of their experiences using those tools :)
- what's the best way to transform nixos into "normal distro"
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How shall I install a Python library/module?
Have a look at mach-nix which is a small utility library for nix to build Python packages declaratively.
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Critique my first overlay (xonsh 0.12.4)
final: prev: { xonsh = prev.xonsh.overrideAttrs (old: rec { version = "0.12.4"; src = final.fetchFromGitHub { owner = "xonsh"; repo = "xonsh"; rev = version; sha256 = "0kdps0gf0767zy0fs6qn39rv4z3x7ck0qz1pzx6962593171yk8b"; }; propagatedBuildInputs = prev.xonsh.propagatedBuildInputs ++ [final.python3Packages.virtualenv]; }); python39 = prev.python39.override { self = prev.python39; packageOverrides = python_final: python_prev: { prompt-toolkit = python_prev.prompt-toolkit.overrideAttrs (old: rec { version = "3.0.29"; src = final.python3Packages.fetchPypi { pname = "prompt_toolkit"; inherit version; sha256 = "sha256-vWQPYOjOzXTw3CSXE9QzrOLdxitl7gf5bTWOCxUrbqc="; }; }); }; }; # Using mach-nix to fetch unpackaged xontrib plugins # adapted from https://github.com/NixOS/nixpkgs/issues/75786#issuecomment-873654103 mach-nix = import (builtins.fetchGit { url = "https://github.com/DavHau/mach-nix/"; ref = "refs/tags/3.4.0"; }) { pkgs = final; }; xonsh_pyenv = final.mach-nix.mkPython { requirements = '' xontrib-fzf-widgets xonsh-direnv ''; }; xonsh_with_plugins = final.xonsh.overrideAttrs (old: { propagatedBuildInputs = old.propagatedBuildInputs ++ final.xonsh_pyenv.python.pkgs.selectPkgs final.xonsh_pyenv.python.pkgs; }); }
What are some alternatives?
devshell - Per project developer environments
poetry2nix - Convert poetry projects to nix automagically [maintainer=@adisbladis]
flake-utils - Pure Nix flake utility functions [maintainer=@zimbatm]
discord-overlay - [DEPRECATED] A Nixpkgs overlay providing the latest version(s) of the Discord desktop app, automatically updated every 30 minutes
devenv - Fast, Declarative, Reproducible, and Composable Developer Environments
spotify-dl - Downloads songs from your Spotify Playlist
lorri - Your project's nix-env
nix-alien - Run unpatched binaries on Nix/NixOS
flake-templates - A collection of barebone Nix shells for starting a project, provided as flake templates
lm-evaluation-harness - A framework for few-shot evaluation of language models.
naersk - Build Rust projects in Nix - no configuration, no code generation, no IFD, sandbox friendly.
nix-prefetch-github - Prefetch sources from github for nix build tool