anchor.diff:    call curl -L -k https://github.com/StefanScherer/basebox-slave/raw/master/VirtualBox.xml -O "%USERPROFILE%\.VirtualBox\VirtualBox.xml"
   )
   call cinst virtualbox
  -if not exist D:\VirtualBox mkdir D:\VirtualBox
  +if not exist %WORKDRIVE%\VirtualBox mkdir %WORKDRIVE%\VirtualBox
   rem if exist "C:\program files\oracle\virtualbox\vboxmanage.exe" goto VIRTUALBOX_INSTALLED
   rem wget http://download.virtualbox.org/virtualbox/4.3.6/VirtualBox-4.3.6-91406-Win.exe -O %TEMP%\VirtualBox-4.3.6-91406-Win.exe
   rem %TEMP%\VirtualBox-4.3.6-91406-Win.exe -s
  
positive.code: 
  call cinst curl
  call cinst 7zip
  set PATH=%PATH%;c:\Program Files\7-Zip
  call cinst vim
  call cinst msysgit
  call cinst firefox
  
  rem Install packer 0.5.1
  if not exist D:\Packer\cache mkdir D:\Packer\cache
  setx PACKER_CACHE_DIR D:\Packer\cache
  set PACKER_CACHE_DIR=D:\Packer\cache
  if not exist D:\Packer\temp mkdir D:\Packer\temp
  setx PACKER_TEMP_DIR D:\Packer\temp
  set PACKER_TEMP_DIR=D:\Packer\temp
  
  rem call cinst packer
  if exist C:\hashicorp\packer\packer.exe goto PACKER_INSTALLED
  curl -J -k https://dl.bintray.com/mitchellh/packer/0.5.1_windows_amd64.zip -O %TEMP%\0.5.1_windows_amd64.zip
  mkdir C:\hashicorp\packer
  cd /D C:\hashicorp\packer
  7z x %TEMP%\0.5.1_windows_amd64.zip
  
negative.code: rem unzip jenkins.zip
  rem setup.exe -s
  
  if not exist %WORKDRIVE%\GitHub mkdir %WORKDRIVE%\GitHub
  cd /D %WORKDRIVE%\GitHub
  if not exist basebox-packer (
    git clone https://github.com/StefanScherer/basebox-packer.git
  ) else (
  