For some reason the nhc98 build isn't completing on my machine. Since the build listing is quite long, I've only included the tail. $ uname -a Linux scotts 2.4.16 #1 Wed Dec 5 18:24:14 PST 2001 i586 unknown $ ghc --help Use of the Glasgow Haskell Compiler driver: ghc-5.02.1 [command-line-options-and-input-files] .... The following patches were applied: patch-1.10-Array patch-1.10-arrow patch-1.10-blockbuffer patch-1.10-counter patch-1.10-ghc5.02 patch-1.10-hiding patch-1.10-keywords ... ... gmake[1]: Entering directory `/home/scott/Haskell/nhc98-1.10/src/tracer/hat' mkdir -p /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat gcc -O3 -I/home/scott/Haskell/nhc98-1.10/include -DVERSION="\"1.10\"" -c nodecache.c -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/nodecache.o gcc -O3 -I/home/scott/Haskell/nhc98-1.10/include -DVERSION="\"1.10\"" -c minisocklib.c -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/minisocklib.o gcc -O3 -I/home/scott/Haskell/nhc98-1.10/include -DVERSION="\"1.10\"" -c utils.c -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/utils.o gcc -O3 -I/home/scott/Haskell/nhc98-1.10/include -DVERSION="\"1.10\"" -c browsercomms.c -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/browsercomms.o gcc -O3 -I/home/scott/Haskell/nhc98-1.10/include hat-stack.c /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/utils.o \ -o /home/scott/Haskell/nhc98-1.10/lib/ix86-Linux/hat-stack gcc -O3 -I/home/scott/Haskell/nhc98-1.10/include -DPRELSRCDIR=\"/home/scott/Haskell/nhc98-1.10/src/prelude\" hat-connect.c \ -o /home/scott/Haskell/nhc98-1.10/lib/ix86-Linux/hat-connect /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/nodecache.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/minisocklib.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/utils.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/browsercomms.o gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/nodelist.o nodelist.c gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hatinterface.o hatinterface.c gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hashtable.o hashtable.c gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/observe.o observe.c gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/detect.o detect.c gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/Expressions.o Expressions.c gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hatgeneral.o hatgeneral.c gcc -c -g -DVERSION="\"1.10\"" -o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/FunTable.o FunTable.c ar -rc /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hatlib.a /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/detect.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/nodelist.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hatinterface.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/FunTable.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/Expressions.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hashtable.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/observe.o /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hatgeneral.o /home/scott/Haskell/nhc98-1.10/script/hmake -nhc98 -K10M +CTS -H20M -CTS Hatobserve /home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat/hatlib.a -d/home/scott/Haskell/nhc98-1.10/targets/ix86-Linux/obj/hat hmake: Sorry, I do not know about your installation of nhc98 gmake[1]: *** [/home/scott/Haskell/nhc98-1.10/lib/ix86-Linux/hat-observe] Error 1 gmake[1]: Leaving directory `/home/scott/Haskell/nhc98-1.10/src/tracer/hat' gmake: *** [lib/ix86-Linux/hat-stack] Error 2