When building hmatrix-0.10.0.0 with GHC 7.0.1 I get the following error. GHC 7.0.0.20101111 works fine. Increasing the context stack size only makes the error message longer.

lib\Numeric\LinearAlgebra\Tests.hs:242:33:
    Context reduction stack overflow; size = 21
    Use -fcontext-stack=N to increase stack size to N
      $dNum :: Num (Vector uf6)
      co :: e ~ uf6
      co :: RealOf e ~ e
      co :: RealOf uf5 ~ uf5
      co :: e ~ uf5
      co :: RealOf e ~ e
      co :: RealOf uf4 ~ uf4
      co :: e ~ uf4
      co :: RealOf e ~ e
      co :: RealOf uf3 ~ uf3
      co :: e ~ uf3
      co :: RealOf e ~ e
      co :: RealOf uf2 ~ uf2
      co :: e ~ uf2
      co :: RealOf e ~ e
      co :: RealOf uf1 ~ uf1
      co :: e ~ uf1
      co :: RealOf e ~ e
      co :: RealOf uf ~ uf
      co :: e ~ uf
      co :: RealOf e ~ e
    In the expression: norm2 a =~= sqrt (dot a a)
    In an equation for `norm2PropR':
        norm2PropR a = norm2 a =~= sqrt (dot a a)
    In an equation for `normsVTest':
        normsVTest
          = TestList
              [utest "normv2CD" $ norm2PropC v,
               utest "normv2CF" $ norm2PropC (single v),
               utest "normv2D" $ norm2PropR x, ....]
          where
              v = fromList [...] :: Vector (Complex Double)
              x = fromList [...] :: Vector Double
              norm2PropR a = norm2 a =~= sqrt (dot a a)
              norm2PropC a = norm2 a =~= realPart (sqrt (dot a (conj a)))
              ....