GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
############################################################################# ## #W init.g The Congruence package Ann Dooms #W Eric Jespers #W Alexander Konovalov #W Helena Verrill ## ## ############################################################################# # read Congruence declarations ReadPackage( "congruence/lib/cong.gd" ); ReadPackage( "congruence/lib/farey.gd" ); # read the other part of code ReadPackage( "congruence/lib/cong.g" ); ReadPackage( "congruence/lib/buildman.g" ); ReadPackage( "congruence/lib/factor.g" ); # set the default InfoLevel SetInfoLevel( InfoCongruence, 1 );