condor software package provides transitional dummy package, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install condor
condor is installed in your system.
Make ensure the condor package were installed using the commands given below,
$ sudo dpkg-query -l | grep condor *
You will get with condor package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Old Libraries |
| Package | condor |
| Version | 8.4.8~dfsg.1-1 |
| Description | transitional dummy package |
| Sub Section | Oldlibs |