Adam T. Williams awill1988

Nix is a purely functional package manager

/nix folder in my dotfiles repo

this is how I utilize nix to have better management of initial setup in terms of both logically and performantely better

How I package Docker image using Nix

My first attempt to package with Nix for a Docker image with Dockerfile

From Homebrew to Home Manager

These instructions are to create a local, named Docker volume that stores authenticated Google service account credentials, for mounting to local Docker containers. This setup should only be required once, as the volume persists even after connected containers are stopped/removed.

TREAT THIS VOLUME AS CREDENTIALS. The volume stores sensitive information and should never leave your local machine.

Steps

Create the service account credentials file to authenticate google services.
This file should be saved in ~/.config/gcloud/ on Mac/Linux,

server-setup.md

How to setup a Ubuntu 20.04 server with Kubernetes + CRI-O + Cilium

Networking

vim /etc/netplan/01-netcfg.yaml # optional, if DHCP isn't good enough

CRI-O Installation

setup adb

Add platform-tools to your path

echo 'export ANDROID_HOME=/Users/$USER/Library/Android/sdk' >> ~/.bash_profile
echo 'export PATH=${PATH}:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools' >> ~/.bash_profile

Refresh your bash profile (or restart your terminal app)

source ~/.bash_profile

Be Careful with Table Driven Tests and `t.Parallel()`

We Gophers, love table-driven-tests, it makes our unittesting structured, and makes it easy to add different test cases with ease.

Let’s create our table driven test, for convenience, I chose to use t.Log as the test function. Notice that we don't have any assertion in this test, it is not needed to for the demonstration.

func TestTLog(t *testing.T) {
	t.Parallel()

	#!/usr/bin/env bash

	set -Eeuo pipefail
	trap cleanup SIGINT SIGTERM ERR EXIT

	script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

	usage() {
	cat <<EOF
	Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

	# Instructions for fresh install

	$ sh <(curl -L https://nixos.org/nix/install) --darwin-use-unencrypted-nix-store-volume --daemon
	# reboot
	$ source /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
	$ echo 'export NIX_PATH=darwin-config=$HOME/.nixpkgs/darwin-configuration.nix:$HOME/.nix-defexpr/channels${NIX_PATH:+:}$NIX_PATH' \| tee -a ~/.zshrc
	$ echo 'source $HOME/.nix-profile/etc/profile.d/hm-session-vars.sh' \| tee -a ~/.zshrc
	$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
	$ nix-channel --add https://github.com/LnL7/nix-darwin/archive/master.tar.gz darwin
	$ nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager

	package main

	import "fmt"
	import "time"
	import "math"

	var exponentialBackoffCeilingSecs int64 = 14400 // 4 hours

	func main() {
	fmt.Println("Hello World")

	import UIKit
	import AudioKit
	import AVFoundation

	class ViewController: UIViewController {
	var ae:AVAudioEngine?
	var player:AVAudioPlayerNode?
	var mixer:AVAudioMixerNode?
	var buffer:AVAudioPCMBuffer?

	codename=$(lsb_release -c \| awk '{print $2}')
	sudo tee /etc/apt/sources.list.d/ddebs.list << EOF
	deb http://ddebs.ubuntu.com/ ${codename} main restricted universe multiverse
	deb http://ddebs.ubuntu.com/ ${codename}-security main restricted universe multiverse
	deb http://ddebs.ubuntu.com/ ${codename}-updates main restricted universe multiverse
	deb http://ddebs.ubuntu.com/ ${codename}-proposed main restricted universe multiverse
	EOF

	sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
	sudo apt-get update