some scripts for installing multiuser Nix on Debian-based distros

dangerous-nix.sh

#!/bin/sh
groupadd -r nixbld
for i in $(seq 1 10); do sudo useradd -M -N -r -u $(expr 30000 + $i) -g nixbld -G nixbld -c "Nix build user $i" -d /var/empty -s "$(sudo which nologin)" nixbld$i; done

mkdir -p /etc/nix
chown -R root:nixbld /nix/store
chmod 1775 /nix/store
mkdir -p -m 1777 /nix/var/nix/gcroots/per-user
mkdir -p -m 1777 /nix/var/nix/profiles/per-user

chmod 755 /etc/init.d/nix-daemon
update-rc.d nix-daemon defaults
/etc/init.d/nix-daemon start
export NIX_REMOTE=daemon
echo 'NIX_PATH="nixpkgs=https://github.com/therealpxc/nixpkgs/archive/playground.tar.gz"' >> /etc/environment

deb-nixinst.sh

#!/bin/sh
NIX_VERSION="nix_1.11.2"
NIX_DEB_URI="http://hydra.nixos.org/build/32689246/download/1/nix_1.11.2-1_amd64.deb"
NIX_DAEMON_SCRIPT=""
NIX_INSTALL_ROOT=""

mkdir /tmp/nixprep

pushd /tmp/nixprep
wget "$NIX_DEB_URI" -O "$NIX_VERSION".deb

echo "sudo-ize!"
sudo echo "i AM a god!"

sudo apt-get install -y gdebi-core
sudo gdebi "$NIX_VERSION".deb
sudo wget "$NIX_DAEMON_SCRIPT" -O /etc/init.d/nix-daemon

wget "$NIX_INSTALL_ROOT" -O - | sudo sh
echo 'i hope ur compter is no borken. gl hf'
source /etc/environment

nix-daemon.init.sh

#! /bin/sh
### BEGIN INIT INFO
# Provides:          skeleton
# Required-Start:    \$remote_fs \$syslog
# Required-Stop:     \$remote_fs \$syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: nix-daemon
# Description:       Nix-daemon runs nixblds to build nix/store items.
### END INIT INFO

# Author: Russell O'Connor <roconnor@theorem.ca>

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="nix-deamon"
NAME=nix-daemon
DAEMON=/usr/bin/\$NAME
DAEMON_ARGS=""
PIDFILE=/var/run/\$NAME.pid
SCRIPTNAME=/etc/init.d/\$NAME

# Exit if the package is not installed
[ -x "\$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/\$NAME ] && . /etc/default/\$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
        # Return
        #   0 if daemon has been started
        #   1 if daemon was already running
        #   2 if daemon could not be started
        start-stop-daemon --start --quiet --pidfile \$PIDFILE --exec \$DAEMON --test > /dev/null \
                || return 1
        start-stop-daemon -b --start --quiet --pidfile \$PIDFILE --exec \$DAEMON -- \
                \$DAEMON_ARGS \
                || return 2
}

#
# Function that stops the daemon/service
#
do_stop()
{
        # Return
        #   0 if daemon has been stopped
        #   1 if daemon was already stopped
        #   2 if daemon could not be stopped
        #   other if a failure occurred
        start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile \$PIDFILE --name \$NAME
        RETVAL="\$?"
        [ "\$RETVAL" = 2 ] && return 2
        # Wait for children to finish too if this is a daemon that forks
        # and if the daemon is only ever run from this initscript.
        # If the above conditions are not satisfied then add some other code
        # that waits for the process to drop all resources that could be
        # needed by services started subsequently.  A last resort is to
        # sleep for some time.
        start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec \$DAEMON
        [ "\$?" = 2 ] && return 2
        # Many daemons don't delete their pidfiles when they exit.
        rm -f \$PIDFILE
        return "\$RETVAL"
}

case "\$1" in
  start)
        [ "\$VERBOSE" != no ] && log_daemon_msg "Starting \$DESC" "\$NAME"
        do_start
        case "\$?" in
                0|1) [ "\$VERBOSE" != no ] && log_end_msg 0 ;;
                2) [ "\$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
  stop)
        [ "\$VERBOSE" != no ] && log_daemon_msg "Stopping \$DESC" "\$NAME"
        do_stop
        case "\$?" in
                0|1) [ "\$VERBOSE" != no ] && log_end_msg 0 ;;
                2) [ "\$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
  status)
        status_of_proc "\$DAEMON" "\$NAME" && exit 0 || exit \$?
        ;;
  restart|force-reload)
        log_daemon_msg "Restarting \$DESC" "\$NAME"
        do_stop
        case "\$?" in
          0|1)
                do_start
                case "\$?" in
                        0) log_end_msg 0 ;;
                        1) log_end_msg 1 ;; # Old process is still running
                        *) log_end_msg 1 ;; # Failed to start
                esac
                ;;
          *)
                # Failed to stop
                log_end_msg 1
                ;;
        esac
        ;;
  *)
        echo "Usage: \$SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
        exit 3
        ;;
esac

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