use /bin/sh for init scripts

modules/s6/default.nix

@@ -1,7 +1,6 @@
 { config, pkgs, ... }:
 let
   inherit (pkgs)
-    busybox
     execline
     s6
     s6-init-bin
@@ -16,12 +15,11 @@ let
     name = "s6-scripts";
     src = ./scripts;
     phases = ["unpackPhase" "installPhase" ];
-    buildInputs = [busybox];
+    buildInputs = [];
     installPhase = ''
       mkdir $out
       cp -r $src $out/scripts
       chmod -R +w $out
-      patchShebangs $out/scripts
     '';
   };
   service = dir  {

modules/s6/scripts/rc.init

@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/bin/sh
 
 rl="$1"
 shift

modules/s6/scripts/rc.shutdown

@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/bin/sh
 
 
 ### Things to do before hardware halt/reboot/poweroff.

modules/s6/scripts/rc.shutdown.final

@@ -1,4 +1,4 @@
-#!/nix/store/xbdqbi2mscmhl5wcpbgpjdwxbsrvpkil-bash-5.1-p16/bin/sh -e
+#!/bin/sh -e
 
 ### Things to do *right before* the machine gets rebooted or
 ### powered off, at the very end of the shutdown sequence,

modules/s6/scripts/runlevel

@@ -1,4 +1,4 @@
-#!/usr/bin/env sh -e
+#!/bin/sh -e
 
 ### This script is called once at boot time by rc.init, and is
 ### also called by the runleveld service every time the user