powerpc: getEnvironment empty when run in GHCi

Hi,

on powerpc (only), with ghc-7.8, we have this:

$ cat env.hs
import System.Environment
main = getEnvironment >>= print
$ runhaskell env.hs
[]
$ ./env
[("RESET","\\e[0m")...

This breaks the test suite of shake. Does anyone feel like investigating this?

Also tracked at https://bugs.debian.org/789458