Hi, One other thing which might be of interest for you, but not directly relating to the question if open-vm-tools is the iso image, /usr/lib/finish-install.d/08hw-detect in the debian-installer's hw-detect udeb should install open-vm-tools when it detects that the virtualization type is vmware:
https://sources.debian.org/src/hw-detect/1.159/hw-detect.finish-install.d/08hw-detect/?hl=109#L104-L111 I realize this was not the question, but IMHO was worth mentioning. Regards, Salvatore