Fix: `stack haddock` fails on Windows (#1266)
Fix: `stack haddock` fails on Windows (#1266)

deech/stack,juhp/stack,AndreasPK/stack,rubik/stack,luigy/stack,Blaisorblade/stack,luigy/stack,harendra-kumar/stack,MichielDerhaeg/stack,Heather/stack,martin-kolinek/stack,mrkkrp/stack,AndreasPK/stack,rubik/stack,Fuuzetsu/stack,anton-dessiatov/stack,AndrewRademacher/stack,MichielDerhaeg/stack,anton-dessiatov/stack,keent/stack,juhp/stack,harendra-kumar/stack,phadej/stack,achernyak/stack,narrative/stack,achernyak/stack,Blaisorblade/stack,AndrewRademacher/stack,narrative/stack,keent/stack,Fuuzetsu/stack,vigoo/stack,rvion/stack,mrkkrp/stack,deech/stack,martin-kolinek/stack,vigoo/stack,Heather/stack,sjakobi/stack,rvion/stack,sjakobi/stack,phadej/stack