GHC build failure

[Wolfgang Jeltsch]

Am Donnerstag, den 11.06.2015, 16:50 +0200 schrieb Herbert Valerio
Riedel:
> On 2015-06-11 at 16:37:47 +0200, Wolfgang Jeltsch wrote:
> > I just updated my GHC HEAD copy via git pull and tried to rebuild GHC
> > with BuildFlavour set to devel2. I got the following error message:
> >
> >     ghc/InteractiveUI.hs:68:8: error:
> >         Could not find module ‘Control.DeepSeq’
> >         It is a member of the hidden package
> >         ‘deepseq-1.4.1.1 at deeps_6vMKxt5sPFR0XsbRWvvq59’.
> >         Use -v to see a list of the files searched for.
> >
> > Any ideas what to do?
> 
> ...have you ./boot'ed and ./configure'd again (and to be on the safe
> side, also 'make distclean')? This sounds as if your ghc/ghc-bin.cabal
> wasn't regenerated from the .in file...

The page at <https://ghc.haskell.org/trac/ghc/wiki/Building/Hacking>
says that just running make again is enough.

Also, I do not want to run make distclean, of course, since I want the
rebuild to be fast.

All the best,
Wolfgang