GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
ReadPackage("HAPcryst","lib/environment.gd"); ReadPackage("HAPcryst","lib/misc.gd"); ReadPackage("HAPcryst","lib/spacegroups.gd"); ReadPackage("HAPcryst","lib/translations.gd"); ReadPackage("HAPcryst","lib/geometry.gd"); #ReadPackage("HAPcryst","lib/hasse.gd"); ReadPackage("HAPcryst","lib/resolutionBieberbach.gd"); ReadPackage("HAPcryst","lib/FundamentalDomain.gd"); ####### a few things about datatypes and conversion ####### aka. "the nerdy stuff" ReadPackage("HAPcryst","lib/GroupRing.gd"); ReadPackage("HAPcryst","lib/datatypes/resolutionAccess_generic.gd"); ReadPackage("HAPcryst","lib/datatypes/resolutionAccess_GroupRing.gd"); ReadPackage("HAPcryst","lib/CWcomplexThings.gd"); ReadPackage("HAPcryst","lib/CWcomplexThings_GroupRingRep.gd");