anchor.diff: -{ lib, stdenv, runCommand, fetchFromGitHub, bash, btrfs-progs, coreutils, python3Packages, util-linux }:
  +{ lib, stdenv, runCommand, fetchFromGitHub, bash, btrfs-progs, coreutils
  +, python3Packages, util-linux, nixosTests }:
   
   let
   
  
positive.code:   substituteAll ${./bees-service-wrapper} "$out"/bin/bees-service-wrapper
    chmod +x "$out"/bin/bees-service-wrapper
    ln -s ${bees}/bin/beesd "$out"/bin/beesd
  ''
  
negative.code: 
  in
  
  (runCommand "bees-service" {
    inherit bash bees coreutils;
    utillinux = util-linux; # needs to be a valid shell variable name
    btrfsProgs = btrfs-progs; # needs to be a valid shell variable name
  