Friends With the new build system I get this kind of output HC [stage 1] compiler/stage2/build/SPARC/AddrMode.o HC [stage 1] compiler/stage2/build/CmmContFlowOpt.o HC [stage 1] compiler/stage2/build/CmmImplementSwitchPlans.o AR libraries/Cabal/Cabal/dist-install/build/libHSCabal-1.23.0.0-752LrSyTT7YLYxOzpNXfM5.a C:\fp\HP-2014-2.0.0.0\mingw\bin\ar.exe: creating libraries/Cabal/Cabal/dist-install/build/libHSCabal-1.23.0.0-752LrSyTT7YLYxOzpNXfM5.a LD libraries/Cabal/Cabal/dist-install/build/HSCabal-1.23.0.0-752LrSyTT7YLYxOzpNXfM5.o HC [stage 1] utils/ghc-cabal/dist-install/build/Main.o WARNING: file compiler\specialise\Specialise.hs, line 724 But I have no idea which module caused the WARNING, nor do I have a command-line to copy/paste to reproduce it. (With the old module-at-a-time system I could copy/paste the command line for the specific module.) Is there a way to * make things sequential so I can tell which warnings from which module * get a command line to copy/paste to compile that module? Thanks Simon