Add 'arch' GHC variant
Add 'arch' GHC variant

AndrewRademacher/stack,supermario/stack,achernyak/stack,deech/stack,AndreasPK/stack,narrative/stack,lukexi/stack,martin-kolinek/stack,sjakobi/stack,luigy/stack,keent/stack,rvion/stack,juhp/stack,Heather/stack,vigoo/stack,sjakobi/stack,Fuuzetsu/stack,meiersi-11ce/stack,anton-dessiatov/stack,mathhun/stack,vigoo/stack,MichielDerhaeg/stack,mrkkrp/stack,achernyak/stack,meiersi-11ce/stack,rvion/stack,robstewart57/stack,Blaisorblade/stack,kairuku/stack,luigy/stack,mathhun/stack,deech/stack,robstewart57/stack,supermario/stack,MichielDerhaeg/stack,rubik/stack,martin-kolinek/stack,narrative/stack,anton-dessiatov/stack,AndrewRademacher/stack,lukexi/stack,Fuuzetsu/stack,fizruk/stack,phadej/stack,AndreasPK/stack,Heather/stack,rrnewton/stack,fizruk/stack,Blaisorblade/stack,keent/stack,phadej/stack,rrnewton/stack,rubik/stack,juhp/stack,kairuku/stack,harendra-kumar/stack,mrkkrp/stack,harendra-kumar/stack