Can't compile GHC-7.8.3 from git, fails on haskell98 library

[Dr. ERDI Gergo]

Hi,

On a completely clean clone, I've checked out the tag ghc-7.8.3-release, 
ran sync-all get, boot, and configure, but the build fails on haskell98. 
Any ideas what I could be doing wrong?

Thanks,
 	Gergo

"inplace/bin/ghc-cabal" check libraries/haskell98
"inplace/bin/ghc-cabal" configure libraries/haskell98 dist-install "" 
--with-ghc="/home/cactus/prog/haskell/ghc/ghc-7.8-build/inplace/bin/ghc-stage1" 
--with-ghc-pkg="/home/cactus/prog/haskell/ghc/ghc-7.8-build/inplace/bin/ghc-pkg" 
--disable-library-for-ghci --enable-library-vanilla 
--disable-library-profiling --enable-shared 
--with-hscolour="/home/cactus/.cabal/bin/HsColour" 
--configure-option=CFLAGS=" -fno-stack-protector   " 
--configure-option=LDFLAGS="   " --configure-option=CPPFLAGS="   " 
--gcc-options=" -fno-stack-protector       " --with-gcc="/usr/bin/gcc" 
--with-ld="/usr/bin/ld" --configure-option=--with-cc="/usr/bin/gcc" 
--with-ar="/usr/bin/ar" --with-ranlib="/usr/bin/ranlib" 
--with-alex="/home/cactus/.cabal/bin/alex" 
--with-happy="/home/cactus/.cabal/bin/happy"
Configuring haskell98-2.0.0.4...
ghc-cabal: At least the following dependencies are missing:
base ==4.8.*
make[1]: *** [libraries/haskell98/dist-install/package-data.mk] Error 1