GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
ReadPackage("HAP","lib/TorsionSubcomplexes/eqispecseq.gi");
ReadPackage("HAP","lib/TorsionSubcomplexes/reduceTorsionSubcomplexes.gi");
ReadPackage("HAP","lib/TorsionSubcomplexes/subdivision.gi");
ReadPackage("HAP","lib/TorsionSubcomplexes/countingcells.gi");
ReadPackage("HAP","lib/TorsionSubcomplexes/EulerChar.gi");
ReadPackage("HAP","lib/TorsionSubcomplexes/HAPtoDisk.g");
ReadPackage("HAP","lib/TorsionSubcomplexes/barycentriccount.gi");