Help needed with lens testsuite

[Colin Watson <cjwatson@debian.org>]

I fixed some haskell-lens bugs that were unnecessarily preventing the
testsuite from running, but now it explodes excitingly on various
architectures, with problems loading the "primitive" library in
doctests:

  https://buildd.debian.org/status/package.php?p=haskell-lens

This is a bit beyond my knowledge, and I'm reluctant to simply disable
the tests again in case this points to a deeper problem.  Does anyone
know what's going on here?

Thanks,

-- 
Colin Watson                                       [cjwatson@debian.org]