Mic92

First generate the image script:

$ nix build .#nixosConfigurations.myhost.config.system.build.diskoImagesScript

Next we build the image:

$ sudo ./result --build-memory 2048

Mic92

Tvix is a new implementation of the Nix language and package manager. In this benchmark we test it's performance when instantiating the hello package from nix. Note that at the time tvix does not have its own store implementation yet and it has to execute nix-store whenever it needs to copy files to the store.

Mic92

#!/usr/bin/env python3
import http.client
import json
import os
import time
import urllib.parse
import urllib.request
from pathlib import Path
from typing import Any

Mic92

## USAGE
# $ nix-build kexec-installer.nix
# can be deployed remote like this
# $ rsync -aL -e ssh result/ root@host:
# $ ssh root@host ./kexec-installer
## Customize it like this
# # custom-installer.nix
# import ./kexec-installer.nix {
#   extraConfig = {pkgs, ... } {
#     user.extraUsers.root.openssh.authorizedKeys.keys = [ "<your-key>" ];

Mic92

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

SQL=$(cat <<EOF
select * from DerivationOutputs do    
  inner join ValidPaths vp on vp.id = do.drv
  inner join Refs r1 on r1.referrer = vp.id                          
  inner join ValidPaths vp2 on r1.reference = vp2.id
  where do.path GLOB '/nix/store/$1-*'
EOF

Mic92

{ pkgs ? import <nixpkgs> {} }:

let
  fixWrapper = pkgs.runCommand "fix-wrapper" {} ''
    mkdir -p $out/bin
    for i in ${pkgs.gcc.cc}/bin/*-gnu-gcc*; do
      ln -s ${pkgs.gcc}/bin/gcc $out/bin/$(basename "$i")
    done
    for i in ${pkgs.gcc.cc}/bin/*-gnu-{g++,c++}*; do
      ln -s ${pkgs.gcc}/bin/g++ $out/bin/$(basename "$i")

Mic92

# Batch size: 1000
## Query all packages
elapsed: 24.68 s, heap size: 2610.18 MiB
## Evaluating packages in batches
elapsed: 15.04 s, heap size: 1217.18 MiB
elapsed: 18.31 s, heap size: 1377.18 MiB
elapsed: 9.13 s, heap size: 673.18 MiB
elapsed: 11.24 s, heap size: 769.18 MiB
elapsed: 16.69 s, heap size: 1169.18 MiB
elapsed: 3.50 s, heap size: 384.31 MiB

Mic92

#!/bin/sh

if ! command -v nix >/dev/null; then
  echo "Installing Nix..."
  if command -v curl; then
    curl -L https://nixos.org/nix/install > /tmp/install
  elif command -v wget; then
    wget -O /tmp/install https://nixos.org/nix/install
  else
    echo "Please install curl or wget"

Mic92

#!/usr/bin/env nix-shell
#!nix-shell -i bash -p bash -p qemu_kvm -p iproute2

set -x -eu -o pipefail

VM_IMAGE=""
CPUS="${CPUS:-$(nproc)}"
MEMORY="${MEMORY:-4096}"
SSH_PORT="${SSH_PORT:-2222}"
IMAGE_SIZE="${IMAGE_SIZE:-10G}"

Mic92

# Nix is a powerful package manager for Linux and other Unix systems that makes
# package management reliable and reproducible: https://nixos.org/nix/.
# This file is intended to be used with `nix-shell`
# (https://nixos.org/nix/manual/#sec-nix-shell) to setup a fully-functional
# LEDE build environment by installing all required dependencies.
with import <nixpkgs> {};
stdenv.mkDerivation {
  name = "openwrt-dev-env";
  buildInputs = [
    # This list is more explicit then it have to be: it also includes utils