Eric Bailey yurrriq

Cached and Persistent Nix shell with direnv integration

the default direnv Nix integration from projects loads a Nix shell every new terminal or every time shell.nix and/or default.nix changes. On larger projects with a lot of Nix shell dependencies, that can cause the terminal to take more than 6 seconds to load, which significantly degrades the developer experience (DX).
when a developer garbage collects in their Nix store, often the Nix shell dependencies are deleted also which causes a slow start the next time the project’s Nix shell is requested, also degrading developer experience (DX).

on first Nix shell load, the Nix shell is evaluated fully such that direnv dumps the environment from the spawn Nix shell process

Download NixOS minimal iso and copy to USB stick. For example on Mac OSX

$ diskutil list
$ diskutil unmountDisk /dev/disk1 # Make sure you got right device

Let's first look at some elixir_docs_v1 examples (Erlang syntax). The general chunk structure (from GenServer) is:

{elixir_docs_v1,
    [{docs,
         [{{'__using__',1},539,defmacro,[{'',[],'Elixir'}],false},
          {{abcast,3},

I have:

Product Name: XPS 15 9560
System BIOS: 1.0.3
Service Tag: 3862XF2

	#!/bin/bash

	#
	# NOTE: specify the absolutepath to the directory to use when
	# loading a plugin. '~' expansion is supported.
	#

	chunkc core::plugin_dir /usr/local/opt/chunkwm/share/chunkwm/plugins

	#

	#!/bin/bash -x
	# This script will convert all your git submodules into git subtrees.
	# This script ensures that your new subtrees point to the same commits as the
	# old submodules did, unlike most other scripts that do this.
	# THIS SCRIPT MUST BE PLACED OUTSIDE OF YOUR REPOSITORY!!!!!!!!!!
	# Otherwise, the script will interfere with the git commits (unless you add it to .gitignore).
	# Save the script in your home directory as `~/subtrees.sh`
	# `cd` into your repository
	# Run `~/subtrees.sh`
	# Enjoy!

	#!/bin/bash
	# Input: ./extract_kubecfg_cert.sh my-cluster-name username
	# Output: ./my-cluster-name-ca.crt ./username.crt ./username.key

	# Exit on error
	abort(){
	echo $1 && exit 1
	}

	# Prerequistes

	#
	# Configuration files for Manjaro i3 on Lenovo Yoga 2 pro
	# to scale properly on HiDPI (3200x1800)
	#
	#####################################################
	~/.profile #
	#####################################################

	# UI element scaling, icons
	export GDK_SCALE=2

	{-# LANGUAGE RecordWildCards, Arrows #-}

	import Numeric
	import Data.Char

	import Control.Monad
	import Data.Monoid ((<>))
	import Data.List (nub, sort, reverse)

	data RepeatBounds = RB