#6 Compilation HughesPJ fails

[Christoph]

$ make
[...]
Compiling Text.PrettyPrint.HughesPJ (
./Text/PrettyPrint/HughesPJ.hs,
./Text/PrettyPrint/HughesPJ.o )

./Text/PrettyPrint/HughesPJ.hs:1:0:
conflict: module `Text.PrettyPrint.HughesPJ'
belongs to the current program/library and also to
package base-1.0
make: *** [xcerpt] Fehler 1