[GHC] #15004: Building HEAD fails with -j3 because of unrecorded dependencies.

[GHC]

#15004: Building HEAD fails with -j3 because of unrecorded dependencies.
-------------------------------------+-------------------------------------
           Reporter:  AndreasK       |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Build System   |           Version:
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Building GHC
  Unknown/Multiple                   |  failed
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 There seem to be some missing dependencies.

 {{{
 "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 -O2  -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/Magic.hs -o libraries/ghc-prim/dist-
 install/build/GHC/Magic.o -dyno libraries/ghc-prim/dist-
 install/build/GHC/Magic.dyn_o

 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
   |            ^^^^^^^^^^^^^^^^^^^^

 }}}

 It seems Magic.hs depends in integer-gmp. Which happened to be not yet
 built so it fails.

 I'm not sure which import it is that is missing but recording it here.

 Commit for head is 72b5f649ede82ab3bb429aa72ee1c572f415b0eb

 Building single threaded for a while and then continuing the build with
 -j3 seems to be a valid workaround.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15004>
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