GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
DeclareProperty("IsCrystTranslationSubGroup",IsMatrixGroup);
DeclareGlobalFunction("FactorizationNParts");
DeclareGlobalFunction("VectorToCrystMatrix");
DeclareGlobalFunction("TranslationSubGroup");
DeclareGlobalFunction("CrystTranslationMatrixToVector");
DeclareGlobalFunction("IsIntList");
DeclareGlobalFunction("IsCrystSameOrbit");
DeclareGlobalFunction("AddFirst");
DeclareGlobalFunction("CombinationDisjointSets");
DeclareGlobalFunction("IsCrystSufficientLattice");
DeclareGlobalFunction("ResolutionBoundaryOfWordOnRight");
DeclareGlobalFunction("CrystFinitePartOfMatrix");
DeclareGlobalFunction("CrystGFullBasis");
DeclareGlobalFunction("CrystGcomplex");
DeclareGlobalFunction("CrystCubicalTiling");
DeclareGlobalFunction("ResolutionCubicalCrystGroup");
DeclareGlobalFunction("AverageInnerProduct");
DeclareGlobalFunction("OrthogonalizeBasisByAverageInnerProduct");
DeclareGlobalFunction("CrystMatrix");
DeclareGlobalFunction("BredonChainComplex");
DeclareGlobalFunction("FreeZGResolution");