Alex Vorobiev alexvorobiev

EDIT: check out fix-python instead, make Python run "as usual" on NixOS!

How to: make Python dependencies installed via pip work on NixOS

The issue

You are using NixOS
You start working on a Python project
You manage the dependencies in a classic Python virtual environment using pip or poetry

Adding tailscale to an EdgeRouter (and surviving system upgrades)

I suggest you run sudo bash on all of these so you're the root user.

Installing

Download tailscale and put the files in /config/. Find the latest stable or unstable version for your EdgeRouter's processor (ex. ER4 is mips and ERX is mipself)

sudo bash    # if you havent already

Implementing a jq REPL with fzf

Update: I created jq-zsh-plugin that does this.

One of my favourite tools of my trade is jq. It essentially enables you to process json streams with the same power that sed, awk and grep provide you with for editing line-based formats (csv, tsv, etc.).

Another one of my favourite tools is fzf.

Standard project structure

This is a project structure I’ve found useful. Looking for any thoughts/comments/feedback. Roughly, I found a tension between the style nixpkgs expects and the style conducive to development, so I extracted the common portion into a derivation.nix which is used by the remaining .nix files. This setup allows me to use nix build, nix-shell, overlays, Hydra, alternate packaging schemes, cross-compiling, etc.

Download the latest ugw3 package from https://github.com/Lochnair/vyatta-wireguard/releases and install it on your USG using dpkg -i wireguard-ugw3-<version>.deb.

cd /config/auth
umask 077
mkdir wireguard
cd wireguard
wg genkey > wg_private.key
wg pubkey < wg_private.key > wg_public.key

Expression for a buildEnv-based declarative user environment

This is one way of managing your user profile declaratively.

Alternatives include:

an attrset-based nix-env-based environment, installed using nix-env -ir rather than nix-env --set. LnL has an overlay which shows a way of doing this.
home-manager, which provides NixOS-like config for your $HOME

Note that this is incompatible with regular imperative use of nix-env, e.g. nix-env -iA nixpkgs.hello. It has the advantage of allowing the installation of multiple outputs of the same package much better than nix-env's builtin profile builder does.

	{ config, lib, pkgs, ... }:
	{
	imports = [
	<nixpkgs/nixos/modules/installer/sd-card/sd-image-aarch64-installer.nix>
	./sd-image.nix
	];
	system.stateVersion = "23.11";

	# Pi Zero 2 struggles to work without swap
	sdImage.swap.enable = true;

	#! /usr/bin/env nix-shell
	#! nix-shell -i bash -p bash

	kill_mongo () {
	set +e
	sleep 5 # wait for previous processes to come to an end
	echo "terminating mongod ..."
	pkill mongod
	sleep 5
	pgrep mongod

	;;; org-roam-weeklies.el --- Weekly-notes for Org-roam -- coding: utf-8; lexical-binding: t; --
	;;;
	;; Copyright © 2020 Jethro Kuan <[email protected]>
	;; Copyright © 2020 Leo Vivier <[email protected]>

	;; Author: Jethro Kuan <[email protected]>
	;; Leo Vivier <[email protected]>
	;; URL: https://github.com/org-roam/org-roam
	;; Keywords: org-mode, roam, convenience
	;; Version: 1.2.3