It would seem that you are building random with profiling enabled: 4. Build random-1.0.1.1 by new by ghc/7.4.1/instUnregis by ghc --make Setup ./Setup configure --prefix=/home/mechvel/ghc/7.4.1/instUnregis/lib/ghc-7.4.1 -p ./Setup build -v while your non-reg'ged build of ghc has no profiling libraries. At least that is what this error says: * Serge D. Mechveliani [06.02.2012 18:20]:

System/Random.hs:97:8: Could not find module `Numeric' Perhaps you haven't installed the profiling libraries for package `base'? Use -v to see a list of the files searched for. scico:~/ghc/random/random-1.0.1.1> ------------------------------------------------------------

The easiest is to remove the "-p" flag, if you do not need profiling enabled. Gruss, Christian