found this old email thread [1] How can we install the htcondor2 and classad2 in conda environment?
As mentioned in that thread, the htcondor2 and classad2 modules are currently being distributed as part of the htcondor package; installing a current version of that package will get you (at least) four modules: htcondor, classad, htcondor2, and classad2.
-- ToddM