title: Run script during/after VSIX install?
body: <p>Is it possible to automatically run a script (batch file, powershell, etc.) during or after a VSIX install?  I'm trying to work around <a href="https://connect.microsoft.com/VisualStudio/feedback/details/788787/visual-studio-2012-custom-checkin-policies-do-not-work-when-using-tf-exe-checkin-from-command-line" rel="nofollow">this problem</a>, which requires writing a value to the registry outside of the $RootKey$. I'm hoping that I can simply call a batch or PowerShell script to perform the required registry write for me. I've already got the scripts written, I'm just not sure how or if I can call them during the VSIX install.</p>
  
  <p>I do have a .pkgdef file already in my VSIX, so I was hoping that I could just do something like "Start [PathToBatchScript]" at the bottom of that file to run my batch script, but it doesn't seem to be working.</p>
  
  <p>I've read in a few places that this was not possible with the old 2010 VSIX model, but am hoping that it changed with the new 2012 model. </p>
  
  <p>We are using Visual Studio 2012. Any suggestions are appreciated. Thanks.</p>