So far, this new release has let me remove: - The new "Import of xyz is redundant" warning pointed out tons of cruft in my imports: 117 of them! Apparently it's better than the 6.10 algorithm. It's amazing how much cruft builds up in import lists over time even with -Wall. One issue is that I can still get a spurious warning from it: if I have 'import qualified Text.Read as Read' and then have some Read instances, it will think the import is redundant even though it won't compile without it (`readPrec' is not a (visible) method of class `Read'). The interesting thing is that even though I'm importing it qualified, I write the readPrec in the instance without qualification since 'instance Read X where Read.readPrec = ...' is not allowed. So maybe ghc is confused by that since it doesn't see a Read. anywhere. Importing unqualified doesn't make the warning. - I removed {-# OPTIONS_GHC -fno-warn-unused-imports #-} from a lot of files, now that the bugs that make spurious import warns are fixed. And the bogus warnings with view patterns are gone. - I removed a local version of Data.Map, now that toDescList is in. - Passing -I/path/to/ghc/include to hsc2hs to get it to include HsFFI.h seems to no longer be necessary. - The warnings "-#include is deprecated: No longer has any effect" are not quite right, because they are reuired by hsc2hs, and in fact hsc2hs is inserting {-# INCLUDE "c_interface.h" #-}. Maybe it should be updated to not do that? I know these are small improvements and not as cool as faster parallelism, but I want so say that these little fixes are noticed and much appreciated, and give a big thank you to the Simons and Ian and anyone else involved with this release. It's so satisfying to finally see a warning free compile!