$ cabal build
The sandbox was created after the package was already configured.
Re-configuring with most recently used options. If this fails, please run
configure manually.
Resolving dependencies...
Configuring hdevtools-0.1.0.5...
Building hdevtools-0.1.0.5...
Preprocessing executable 'hdevtools' for hdevtools-0.1.0.5...
[ 2 of 10] Compiling Info             ( src/Info.hs, dist/build/hdevtools/hdevtools-tmp/Info.o )

src/Info.hs:130:59:
    Not in scope: data constructor ‘GHC.MatchGroup’
    Perhaps you meant one of these:
      variable ‘GHC.mkMatchGroup’ (imported from GHC),
      ‘GHC.DocGroup’ (imported from GHC)

src/Info.hs:164:5:
    Not in scope: ‘Pretty.showDocWith’
    Perhaps you meant ‘Pretty.showDoc’ (imported from Pretty)

src/Info.hs:191:67:
    Not in scope: type constructor or class ‘GHC.PostTcType’
    Perhaps you meant one of these:
      ‘GHC.PostTcExpr’ (imported from GHC),
      ‘GHC.PostTcTable’ (imported from GHC),
      ‘GHC.PostTc’ (imported from GHC)

src/Info.hs:229:12:
    Not in scope:
      type constructor or class ‘PprTyThing.PrintExplicitForalls’