Yesterday I installed the RC1 but the process failed at the last stage. The problem was related to the lack of desktop-file-utils package. I would like to suggest to check also this dependency before compiling and installing all the packages.
BTW, thank you for this facility.
This was the error (at 100% of install process...):
## Updating the desktop database update-desktop-database /home/ronan/build/xfce/share/applications ./control.sh: line 380: update-desktop-database: command not found
After that I discovered that the desktop-file-utils was a required package.