GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
This subdirectory Hap/1.11/lib/HapCocyclic/ contain the files of the HAPcocyclic package written by Robert F. Morse. The files init.g and read.g have been slightly modified so that they can be read when loading the HAP package. However, these two HAPcocyclic files will only be read if the HAPcocyclic package is not present in the GAP/pkg directory. The file Ccgroup.gi has been slightly modified to obatin correct results on extensions N >-->E -->> G for which N is not abelian.