Installing CCTK without the GUI component causes HAPI to not get installed

It appears that the custom action that installs HAPI in the CCTK MSI is dependent on the installation of the CCTK GUI component. This means that when I only install the command line portion of CCTK, HAPI doesn't get registered so I have to manually install HAPI afterwards. I've tested this with the clickable installer and from the command line (msiexec.exe /qn /i cctk.msi ALLUSERS=1 ADDLOCAL=DTK).  Could this be changed so HAPI is registered when the command line component is installed?