#!/bin/bash
set -e

lxc launch images:debian/buster "$1"
USER=user

EXE="lxc exec $1 -- bash -c"

$EXE "useradd -m $USER"
$EXE "groupadd nixbld"
$EXE "usermod -a -G nixbld $USER"
$EXE "mkdir -m 0755 /nix && chown $USER /nix"
$EXE "apt -y install curl stterm xz-utils sudo"

lxc config set "$1" security.nesting true
lxc restart "$1"
sleep 1

UEXE="lxc exec $1 -- sudo --login --user $USER bash -ilc"
$UEXE "curl -L https://nixos.org/nix/install | sh"

$UEXE "mkdir -p /home/$USER/.config/nixpkgs/"
lxc file push config/config.nix "$1/home/$USER/.config/nixpkgs/"

$UEXE "nix-env -iA nixpkgs.myPackages"

lxc file push config/nixos-config "$1/home/$USER/"
$UEXE "nix-build '<nixpkgs/nixos>' -A vm -I."

$EXE "ln -s /home/user/result/system/etc/systemd/system/* /etc/systemd/system/"
$EXE "ln -s /home/user/result/system/etc/ssh/* /etc/ssh/"