#!/usr/bin/env bash
set -x
set -Eeuo pipefail

VERSION='1.0.1'
SYSTEM='x86_64-linux'
BINARY="guix-binary-${VERSION}.${SYSTEM}.tar.xz"

cd /tmp
wget "https://ftp.gnu.org/gnu/guix/${BINARY}"
tar -xf "${BINARY}"

sudo mv var/guix /var/
sudo mv gnu /
sudo mkdir -p ~root/.config/guix
sudo ln -fs /var/guix/profiles/per-user/root/current-guix ~root/.config/guix/current

GUIX_PROFILE="$(echo ~root)/.config/guix/current"
source "${GUIX_PROFILE}/etc/profile"

groupadd --system guixbuild
for i in $(seq -w 1 10);
do
  useradd -g guixbuild                       \
          -G guixbuild                       \
          -d /var/empty                      \
          -s "$(command -v nologin)"         \
          -c "Guix build user ${i}" --system \
          "guixbuilder${i}";
done

mkdir -p /usr/local/bin
cd /usr/local/bin
ln -s /var/guix/profiles/per-user/root/current-guix/bin/guix .
ln -s /var/guix/profiles/per-user/root/current-guix/bin/guix-daemon .

guix archive --authorize < ~root/.config/guix/current/share/guix/ci.guix.gnu.org.pub