If you cannot connect ST-7 with INDI SBIG Librally
Previously, the drivers that could access SBIG Parport were
libsbigudrv2, libsbigudrv2-dev
once installed.
Installing these will exclusively erase the indi-full installation, so reinstall it again
$ sudo apt install indi-full
Doing this... for some reason, the ST-7 connection works fine.
When I re-install indi-full, this time libsbigudrv2 and libsbigudrv2-dev are exclusively erased, but there is some file left, which I think is the key to connect SBIG Parport and INDI-SBIG.