- ghc-devs - Haskell.org

How do you build the haddocks for a boot library?
by Simon Jakobi 09 Apr '18

09 Apr '18

Hi, I have some changes to the haddocks in ghc-prim which are re-exported from base. In order to check that I got the syntax right I've tried to build the haddocks by following https://ghc.haskell.org/trac/ghc/wiki/Building/Docs#Haddockdocumentation. Sadly, when I run "make html" in libraries/ghc-prim or libraries/base I get the following error: GNUmakefile:3: libraries/ghc-prim/mk/sub-makefile.mk: No such file or directory make: *** No rule to make target 'libraries/ghc-prim/mk/sub-makefile.mk'. Stop. What should I do instead? Cheers, Simon

2 2

New slow validate errors
by Ömer Sinan Ağacan 08 Apr '18

08 Apr '18

Hi, I see a lot of these errors in slow validate using current GHC HEAD: ghc: panic! (the 'impossible' happened) (GHC version 8.5.20180407 for x86_64-unknown-linux): Each block should be reachable from only one ProcPoint This wasn't happening ~10 days ago. I suspect it may be D4417 but I haven't checked. Ömer

2 1

Re: 8.5 build failure
by Ryan Scott 06 Apr '18

06 Apr '18

I've just landed a commit of Ben's [1] which should fix this issue. Ryan S. ----- [1] Specifically, http://git.haskell.org/ghc.git/commit/54acfbbf64f5fcb108836412e9be0cfabf0d7…

1 0

Why does the RTS run GC right before shutting down?
by Ömer Sinan Ağacan 06 Apr '18

06 Apr '18

Hi, I'm wondering why we run GC in this line: https://github.com/ghc/ghc/blob/master/rts/Schedule.c#L2670 I went back in commit history using git blame and found the commit that introduced that line (5638488ba28), but it didn't help. Does anyone know why we need that line? Thanks, Ömer

2 2

[ANNOUNCE] GHC 8.4.2-rc1 now available
by Ben Gamari 05 Apr '18

05 Apr '18

Hello everyone, The GHC team is proud to announce the first release candidate of 8.4.2. the source distribution, binary distributions, and documentation are available at https://downloads.haskell.org/~ghc/8.4.2-rc1 This release follows so closely to 8.4.1 due to a number last-minute bug-fixes that didn't quite make it into 8.4.1. This includes fixes for: * #14705, the interpreter being broken on some systems * #14779, where the compiler produces invalid code when used with -g * #14891, where a selection of GHC testsuite cases fail on OS X * #5129, where the simplifier would incorrectly reorder evaluation in under some conditions. Since this is a relatively small bugfix release we are bypassing the alpha releases and moving right to the release candidate stage. If all goes well the final release will be cut next week. Happy testing Cheers, - Ben

3 4

More windows
by Simon Peyton Jones 04 Apr '18

04 Apr '18

Tamar I've noticed that "sh" (which is invoked at lot by make etc) takes AGES to start up. At least I think it's 'sh' that is causing the delay. I think it's c:/msys64/usr/bin/sh.exe >From searching the web (eg https://www2.cs.duke.edu/csl/docs/unix_course/intro-60.html) it seems likely that it executes c:/msys64/etc/profile first. And If I put an 'echo' at the start and end of that file, they do seem to take place with a significant gap between them. I have not started sprinkling more echos, but does that ring any bells? Can I replace 'sh' with c:/msys64/usr/bin/bash.exe, which seems to be faster? (My evnt variable SHELL already points to bash.exe. ) And if so, how would I do that? An environment variable. Physically copy bash.exe to sh.exe? Or what? Thanks Simon

2 2

Perl locale
by Simon Peyton Jones 04 Apr '18

04 Apr '18

Hi Tamar One other thing happened to me when building GHC, very early. See below. I think the perl concerned is c:/msys64/usr/bin/perl. Any ideas? It seems non-fatal Thanks Simon perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LC_ALL = (unset), LANG = "ENG" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LC_ALL = (unset), LANG = "ENG" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LC_ALL = (unset), LANG = "ENG" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LC_ALL = (unset), LANG = "ENG" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LC_ALL = (unset), LANG = "ENG" are supported and installed on your system.

2 1

8.5 build failure
by John Leo 03 Apr '18

03 Apr '18

Hi everyone, I pulled from head this morning and rebased my current work on it, and am getting a build error I've never seen before. I don't think it's due to any of my own changes, and everything built fine last time I tried just a couple days ago . I'd pulled both code and submodules. I did make clean, ./boot, ./configure, and then make. The last few lines of the output are below. This is on a Mac using GHC 8.2.2. Let me know if you need any more info. John "inplace/bin/ghc-stage1" -this-unit-id rts -shared -dynamic -dynload deploy -no-auto-link-packages -Lrts/dist/build -lffi -optl-Wl,-rpath -optl-Wl,@loader_path `cat rts/dist/libs.depend` rts/dist/build/Adjustor.thr_debug_dyn_o rts/dist/build/Arena.thr_debug_dyn_o rts/dist/build/Capability.thr_debug_dyn_o rts/dist/build/CheckUnload.thr_debug_dyn_o rts/dist/build/ClosureFlags.thr_debug_dyn_o rts/dist/build/Disassembler.thr_debug_dyn_o rts/dist/build/FileLock.thr_debug_dyn_o rts/dist/build/Globals.thr_debug_dyn_o rts/dist/build/Hash.thr_debug_dyn_o rts/dist/build/Hpc.thr_debug_dyn_o rts/dist/build/HsFFI.thr_debug_dyn_o rts/dist/build/Inlines.thr_debug_dyn_o rts/dist/build/Interpreter.thr_debug_dyn_o rts/dist/build/LdvProfile.thr_debug_dyn_o rts/dist/build/Libdw.thr_debug_dyn_o rts/dist/build/LibdwPool.thr_debug_dyn_o rts/dist/build/Linker.thr_debug_dyn_o rts/dist/build/Messages.thr_debug_dyn_o rts/dist/build/OldARMAtomic.thr_debug_dyn_o rts/dist/build/PathUtils.thr_debug_dyn_o rts/dist/build/Pool.thr_debug_dyn_o rts/dist/build/Printer.thr_debug_dyn_o rts/dist/build/ProfHeap.thr_debug_dyn_o rts/dist/build/ProfilerReport.thr_debug_dyn_o rts/dist/build/ProfilerReportJson.thr_debug_dyn_o rts/dist/build/Profiling.thr_debug_dyn_o rts/dist/build/Proftimer.thr_debug_dyn_o rts/dist/build/RaiseAsync.thr_debug_dyn_o rts/dist/build/RetainerProfile.thr_debug_dyn_o rts/dist/build/RetainerSet.thr_debug_dyn_o rts/dist/build/RtsAPI.thr_debug_dyn_o rts/dist/build/RtsDllMain.thr_debug_dyn_o rts/dist/build/RtsFlags.thr_debug_dyn_o rts/dist/build/RtsMain.thr_debug_dyn_o rts/dist/build/RtsMessages.thr_debug_dyn_o rts/dist/build/RtsStartup.thr_debug_dyn_o rts/dist/build/RtsSymbolInfo.thr_debug_dyn_o rts/dist/build/RtsSymbols.thr_debug_dyn_o rts/dist/build/RtsUtils.thr_debug_dyn_o rts/dist/build/STM.thr_debug_dyn_o rts/dist/build/Schedule.thr_debug_dyn_o rts/dist/build/Sparks.thr_debug_dyn_o rts/dist/build/Stable.thr_debug_dyn_o rts/dist/build/StaticPtrTable.thr_debug_dyn_o rts/dist/build/Stats.thr_debug_dyn_o rts/dist/build/StgCRun.thr_debug_dyn_o rts/dist/build/StgPrimFloat.thr_debug_dyn_o rts/dist/build/Task.thr_debug_dyn_o rts/dist/build/ThreadLabels.thr_debug_dyn_o rts/dist/build/ThreadPaused.thr_debug_dyn_o rts/dist/build/Threads.thr_debug_dyn_o rts/dist/build/Ticky.thr_debug_dyn_o rts/dist/build/Timer.thr_debug_dyn_o rts/dist/build/TopHandler.thr_debug_dyn_o rts/dist/build/Trace.thr_debug_dyn_o rts/dist/build/WSDeque.thr_debug_dyn_o rts/dist/build/Weak.thr_debug_dyn_o rts/dist/build/fs.thr_debug_dyn_o rts/dist/build/xxhash.thr_debug_dyn_o rts/dist/build/hooks/FlagDefaults.thr_debug_dyn_o rts/dist/build/hooks/LongGCSync.thr_debug_dyn_o rts/dist/build/hooks/MallocFail.thr_debug_dyn_o rts/dist/build/hooks/OnExit.thr_debug_dyn_o rts/dist/build/hooks/OutOfHeap.thr_debug_dyn_o rts/dist/build/hooks/StackOverflow.thr_debug_dyn_o rts/dist/build/sm/BlockAlloc.thr_debug_dyn_o rts/dist/build/sm/CNF.thr_debug_dyn_o rts/dist/build/sm/Compact.thr_debug_dyn_o rts/dist/build/sm/Evac.thr_debug_dyn_o rts/dist/build/sm/Evac_thr.thr_debug_dyn_o rts/dist/build/sm/GC.thr_debug_dyn_o rts/dist/build/sm/GCAux.thr_debug_dyn_o rts/dist/build/sm/GCUtils.thr_debug_dyn_o rts/dist/build/sm/MBlock.thr_debug_dyn_o rts/dist/build/sm/MarkWeak.thr_debug_dyn_o rts/dist/build/sm/Sanity.thr_debug_dyn_o rts/dist/build/sm/Scav.thr_debug_dyn_o rts/dist/build/sm/Scav_thr.thr_debug_dyn_o rts/dist/build/sm/Storage.thr_debug_dyn_o rts/dist/build/sm/Sweep.thr_debug_dyn_o rts/dist/build/eventlog/EventLog.thr_debug_dyn_o rts/dist/build/eventlog/EventLogWriter.thr_debug_dyn_o rts/dist/build/linker/CacheFlush.thr_debug_dyn_o rts/dist/build/linker/Elf.thr_debug_dyn_o rts/dist/build/linker/LoadArchive.thr_debug_dyn_o rts/dist/build/linker/M32Alloc.thr_debug_dyn_o rts/dist/build/linker/MachO.thr_debug_dyn_o rts/dist/build/linker/PEi386.thr_debug_dyn_o rts/dist/build/linker/SymbolExtras.thr_debug_dyn_o rts/dist/build/linker/elf_got.thr_debug_dyn_o rts/dist/build/linker/elf_plt.thr_debug_dyn_o rts/dist/build/linker/elf_plt_aarch64.thr_debug_dyn_o rts/dist/build/linker/elf_plt_arm.thr_debug_dyn_o rts/dist/build/linker/elf_reloc.thr_debug_dyn_o rts/dist/build/linker/elf_reloc_aarch64.thr_debug_dyn_o rts/dist/build/linker/elf_util.thr_debug_dyn_o rts/dist/build/posix/GetEnv.thr_debug_dyn_o rts/dist/build/posix/GetTime.thr_debug_dyn_o rts/dist/build/posix/Itimer.thr_debug_dyn_o rts/dist/build/posix/OSMem.thr_debug_dyn_o rts/dist/build/posix/OSThreads.thr_debug_dyn_o rts/dist/build/posix/Select.thr_debug_dyn_o rts/dist/build/posix/Signals.thr_debug_dyn_o rts/dist/build/posix/TTY.thr_debug_dyn_o rts/dist/build/Apply.thr_debug_dyn_o rts/dist/build/Compact.thr_debug_dyn_o rts/dist/build/Exception.thr_debug_dyn_o rts/dist/build/HeapStackCheck.thr_debug_dyn_o rts/dist/build/PrimOps.thr_debug_dyn_o rts/dist/build/StgMiscClosures.thr_debug_dyn_o rts/dist/build/StgStartup.thr_debug_dyn_o rts/dist/build/StgStdThunks.thr_debug_dyn_o rts/dist/build/Updates.thr_debug_dyn_o rts/dist/build/AutoApply.thr_debug_dyn_o -fPIC -dynamic -optc-DTHREADED_RTS -optc-DDEBUG -eventlog -O -H64m -Wall -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -DFS_NAMESPACE=rts -this-unit-id rts -dcmm-lint -DDTRACE -i -irts -irts/dist/build -Irts/dist/build -irts/dist/build/./autogen -Irts/dist/build/./autogen -O2 -Wcpp-undef -O0 -Wnoncanonical-monad-instances -o rts/dist/build/libHSrts_thr_debug-ghc8.5.20180403.dylib "inplace/bin/ghc-stage1" -this-unit-id rts -shared -dynamic -dynload deploy -no-auto-link-packages -Lrts/dist/build -lffi -optl-Wl,-rpath -optl-Wl,@loader_path `cat rts/dist/libs.depend` rts/dist/build/Adjustor.debug_dyn_o rts/dist/build/Arena.debug_dyn_o rts/dist/build/Capability.debug_dyn_o rts/dist/build/CheckUnload.debug_dyn_o rts/dist/build/ClosureFlags.debug_dyn_o rts/dist/build/Disassembler.debug_dyn_o rts/dist/build/FileLock.debug_dyn_o rts/dist/build/Globals.debug_dyn_o rts/dist/build/Hash.debug_dyn_o rts/dist/build/Hpc.debug_dyn_o rts/dist/build/HsFFI.debug_dyn_o rts/dist/build/Inlines.debug_dyn_o rts/dist/build/Interpreter.debug_dyn_o rts/dist/build/LdvProfile.debug_dyn_o rts/dist/build/Libdw.debug_dyn_o rts/dist/build/LibdwPool.debug_dyn_o rts/dist/build/Linker.debug_dyn_o rts/dist/build/Messages.debug_dyn_o rts/dist/build/OldARMAtomic.debug_dyn_o rts/dist/build/PathUtils.debug_dyn_o rts/dist/build/Pool.debug_dyn_o rts/dist/build/Printer.debug_dyn_o rts/dist/build/ProfHeap.debug_dyn_o rts/dist/build/ProfilerReport.debug_dyn_o rts/dist/build/ProfilerReportJson.debug_dyn_o rts/dist/build/Profiling.debug_dyn_o rts/dist/build/Proftimer.debug_dyn_o rts/dist/build/RaiseAsync.debug_dyn_o rts/dist/build/RetainerProfile.debug_dyn_o rts/dist/build/RetainerSet.debug_dyn_o rts/dist/build/RtsAPI.debug_dyn_o rts/dist/build/RtsDllMain.debug_dyn_o rts/dist/build/RtsFlags.debug_dyn_o rts/dist/build/RtsMain.debug_dyn_o rts/dist/build/RtsMessages.debug_dyn_o rts/dist/build/RtsStartup.debug_dyn_o rts/dist/build/RtsSymbolInfo.debug_dyn_o rts/dist/build/RtsSymbols.debug_dyn_o rts/dist/build/RtsUtils.debug_dyn_o rts/dist/build/STM.debug_dyn_o rts/dist/build/Schedule.debug_dyn_o rts/dist/build/Sparks.debug_dyn_o rts/dist/build/Stable.debug_dyn_o rts/dist/build/StaticPtrTable.debug_dyn_o rts/dist/build/Stats.debug_dyn_o rts/dist/build/StgCRun.debug_dyn_o rts/dist/build/StgPrimFloat.debug_dyn_o rts/dist/build/Task.debug_dyn_o rts/dist/build/ThreadLabels.debug_dyn_o rts/dist/build/ThreadPaused.debug_dyn_o rts/dist/build/Threads.debug_dyn_o rts/dist/build/Ticky.debug_dyn_o rts/dist/build/Timer.debug_dyn_o rts/dist/build/TopHandler.debug_dyn_o rts/dist/build/Trace.debug_dyn_o rts/dist/build/WSDeque.debug_dyn_o rts/dist/build/Weak.debug_dyn_o rts/dist/build/fs.debug_dyn_o rts/dist/build/xxhash.debug_dyn_o rts/dist/build/hooks/FlagDefaults.debug_dyn_o rts/dist/build/hooks/LongGCSync.debug_dyn_o rts/dist/build/hooks/MallocFail.debug_dyn_o rts/dist/build/hooks/OnExit.debug_dyn_o rts/dist/build/hooks/OutOfHeap.debug_dyn_o rts/dist/build/hooks/StackOverflow.debug_dyn_o rts/dist/build/sm/BlockAlloc.debug_dyn_o rts/dist/build/sm/CNF.debug_dyn_o rts/dist/build/sm/Compact.debug_dyn_o rts/dist/build/sm/Evac.debug_dyn_o rts/dist/build/sm/Evac_thr.debug_dyn_o rts/dist/build/sm/GC.debug_dyn_o rts/dist/build/sm/GCAux.debug_dyn_o rts/dist/build/sm/GCUtils.debug_dyn_o rts/dist/build/sm/MBlock.debug_dyn_o rts/dist/build/sm/MarkWeak.debug_dyn_o rts/dist/build/sm/Sanity.debug_dyn_o rts/dist/build/sm/Scav.debug_dyn_o rts/dist/build/sm/Scav_thr.debug_dyn_o rts/dist/build/sm/Storage.debug_dyn_o rts/dist/build/sm/Sweep.debug_dyn_o rts/dist/build/eventlog/EventLog.debug_dyn_o rts/dist/build/eventlog/EventLogWriter.debug_dyn_o rts/dist/build/linker/CacheFlush.debug_dyn_o rts/dist/build/linker/Elf.debug_dyn_o rts/dist/build/linker/LoadArchive.debug_dyn_o rts/dist/build/linker/M32Alloc.debug_dyn_o rts/dist/build/linker/MachO.debug_dyn_o rts/dist/build/linker/PEi386.debug_dyn_o rts/dist/build/linker/SymbolExtras.debug_dyn_o rts/dist/build/linker/elf_got.debug_dyn_o rts/dist/build/linker/elf_plt.debug_dyn_o rts/dist/build/linker/elf_plt_aarch64.debug_dyn_o rts/dist/build/linker/elf_plt_arm.debug_dyn_o rts/dist/build/linker/elf_reloc.debug_dyn_o rts/dist/build/linker/elf_reloc_aarch64.debug_dyn_o rts/dist/build/linker/elf_util.debug_dyn_o rts/dist/build/posix/GetEnv.debug_dyn_o rts/dist/build/posix/GetTime.debug_dyn_o rts/dist/build/posix/Itimer.debug_dyn_o rts/dist/build/posix/OSMem.debug_dyn_o rts/dist/build/posix/OSThreads.debug_dyn_o rts/dist/build/posix/Select.debug_dyn_o rts/dist/build/posix/Signals.debug_dyn_o rts/dist/build/posix/TTY.debug_dyn_o rts/dist/build/Apply.debug_dyn_o rts/dist/build/Compact.debug_dyn_o rts/dist/build/Exception.debug_dyn_o rts/dist/build/HeapStackCheck.debug_dyn_o rts/dist/build/PrimOps.debug_dyn_o rts/dist/build/StgMiscClosures.debug_dyn_o rts/dist/build/StgStartup.debug_dyn_o rts/dist/build/StgStdThunks.debug_dyn_o rts/dist/build/Updates.debug_dyn_o rts/dist/build/AutoApply.debug_dyn_o -fPIC -dynamic -optc-DDEBUG -ticky -DTICKY_TICKY -eventlog -O -H64m -Wall -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -DFS_NAMESPACE=rts -this-unit-id rts -dcmm-lint -DDTRACE -i -irts -irts/dist/build -Irts/dist/build -irts/dist/build/./autogen -Irts/dist/build/./autogen -O2 -Wcpp-undef -O0 -Wnoncanonical-monad-instances -o rts/dist/build/libHSrts_debug-ghc8.5.20180403.dylib "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O -dcore-lint -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -dynamic-too -c libraries/ghc-prim/./GHC/CString.hs -o libraries/ghc-prim/dist-install/build/GHC/CString.o -dyno libraries/ghc-prim/dist-install/build/GHC/CString.dyn_o "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O -dcore-lint -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -dynamic-too -c libraries/ghc-prim/./GHC/IntWord64.hs -o libraries/ghc-prim/dist-install/build/GHC/IntWord64.o -dyno libraries/ghc-prim/dist-install/build/GHC/IntWord64.dyn_o "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-DOPTIMISE_INTEGER_GCD_LCM -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-gmp-1.0.1.0 -package-id rts -this-unit-id base -XHaskell2010 -O -dcore-lint -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -dynamic-too -c libraries/base/./GHC/Base.hs-boot -o libraries/base/dist-install/build/GHC/Base.o-boot -dyno libraries/base/dist-install/build/GHC/Base.dyn_o-boot "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-DOPTIMISE_INTEGER_GCD_LCM -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-gmp-1.0.1.0 -package-id rts -this-unit-id base -XHaskell2010 -O -dcore-lint -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -dynamic-too -c libraries/base/./GHC/Real.hs-boot -o libraries/base/dist-install/build/GHC/Real.o-boot -dyno libraries/base/dist-install/build/GHC/Real.dyn_o-boot "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-DOPTIMISE_INTEGER_GCD_LCM -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-gmp-1.0.1.0 -package-id rts -this-unit-id base -XHaskell2010 -O -dcore-lint -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -dynamic-too -c libraries/base/./GHC/IO.hs-boot -o libraries/base/dist-install/build/GHC/IO.o-boot -dyno libraries/base/dist-install/build/GHC/IO.dyn_o-boot libraries/base/GHC/IO.hs-boot:9:12: error: • Failed to load interface for ‘GHC.Integer.Type’ There are files missing in the ‘integer-gmp-1.0.1.0’ package, try running 'ghc-pkg check'. Use -v to see a list of the files searched for. • In the type signature: mplusIO :: IO a -> IO a -> IO a | 9 | mplusIO :: IO a -> IO a -> IO a | ^^^^^^^^^^^^^^^^^^^^ make[1]: *** [libraries/base/dist-install/build/GHC/IO.o-boot] Error 1 make[1]: *** Waiting for unfinished jobs.... make: *** [all] Error 2

6 8

Building GHC using cabal repl
by Joachim Breitner 03 Apr '18

03 Apr '18

Hi, when hacking on most Haskell projects these days, I enjoy having a shell with ghcid -c 'cabal new-repl -w ghc-8.2' open. I wondered if I can achieve the same when hacking on GHC. The compiler/ directory has a Cabal file. It does not work out-of-the box (in a fully built tree): $ cabal new-repl -w ../inplace/bin/ghc-stage2 -fstage2 Build profile: -w ghc-8.5.20180320 -O1 In order, the following will be built (use -v for more details): - ghc-8.5 (lib) (first run) Preprocessing library for ghc-8.5.. cabal: can't find source for Config in backpack, basicTypes, cmm, codeGen, coreSyn, deSugar, ghci, hsSyn, iface, llvmGen, main, nativeGen, parser, prelude, profiling, rename, simplCore, simplStg, specialise, stgSyn, stranal, typecheck, types, utils, vectorise, /home/jojo/build/haskell/ghc/compiler/dist-newstyle/build/x86_64-linux/ghc-8.5.20180320/ghc-8.5/build/autogen, /home/jojo/build/haskell/ghc/compiler/dist-newstyle/build/x86_64-linux/ghc-8.5.20180320/ghc-8.5/build/global-autogen cabal: repl failed for ghc-8.5. It seems that the stage2/build directory is not registered as a source directory: $ find -name Config.hs ./stage2/build/Config.hs ./stage1/build/Config.hs But if I extend the section if flag(stage2) Include-Dirs: stage2 with these lines Include-Dirs: stage2/build hs-source-dirs: stage2/build ghc-options: -DSTAGE=2 ghc-options: -fobject-code and call cabal like so, it actually works: cabal new-repl -w ../inplace/bin/ghc-stage2 -fstage2 If I now make hdevtools use this line, then hacking on GHC will have a bit less friction… (BTW, does Hadrian have a “load all of GHC in GHCi” mode?) Cheers, Joachim -- Joachim “nomeata” Breitner mail(a)joachim-breitner.de https://www.joachim-breitner.de/

3 2

[Newcomer] [Bug 13795] :kind! is not expanding type synonyms anymore
by Xing GUO 03 Apr '18

03 Apr '18

Hi, I am a newcomer, I have compiled the GHC codes ... And, I want to do some contribution for it ... I found a ticket on the website, and I want to work on this ... #BUG 13795 <https://ghc.haskell.org/trac/ghc/ticket/13795> Can someone give me some advice? or is there anyone that has been working on this ? Regards, Xing

2 1