GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
DeclareAttribute("IdentityMap",IsHapRegularCWComplex);
DeclareGlobalFunction("ChainMapOfRegularCWMap");
DeclareGlobalFunction("ChainComplexEquivalenceOfRegularCWComplex");
DeclareGlobalFunction("HAP_CocyclesAndCoboundaries");
DeclareGlobalFunction("HAP_IntegralCohomology");
DeclareGlobalFunction("HAP_IntegralClassToCocycle");
DeclareGlobalFunction("HAP_IntegralCocycleToClass");
DeclareGlobalFunction("CupProductOfRegularCWComplex");