I believe we need to do  b) Revert commit 07da52ce2d in the ghc-7.10 branch and continue to use llvm-3.5 for the 7.10 series.

I think the plan is to require llvm-3.6 or a later version for 7.12.1 and later

Ghc 7.10.1 only supports llvm 3.5 as stated in https://ghc.haskell.org/trac/ghc/ticket/9929

I filed a doc bug on this yesterday, https://ghc.haskell.org/trac/ghc/ticket/10302



On Wed, Apr 15, 2015 at 7:12 AM, Erik de Castro Lopo <mle+hs@mega-nerd.com> wrote:
Erik de Castro Lopo wrote:

> At this point we need to decide whether:
>
>    a) Require llvm-3.6 for 7.10.2 and later.

I've done some testing on the ghc-7.10 branch (with a couple of patches
cherry picked from master) with llvm-3.6 on amd64-linux. WIth this,
there are 17 unexpected failures during validate:

   deriving/should_fail       T7959 [stderr mismatch] (normal)
   deriving/should_fail       drvfail005 [stderr mismatch] (normal)
   deriving/should_fail       drvfail009 [stderr mismatch] (normal)
   indexed-types/should_fail  SimpleFail14 [stderr mismatch] (normal)
   simplCore/should_compile   spec-inline [stderr mismatch] (optasm)
   typecheck/should_compile   T10195 [exit code non-0] (normal)
   typecheck/should_fail      T2994 [stderr mismatch] (normal)
   typecheck/should_fail      T3540 [stderr mismatch] (normal)
   typecheck/should_fail      T7778 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail036 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail057 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail063 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail134 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail146 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail147 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail151 [stderr mismatch] (normal)
   typecheck/should_fail      tcfail209 [stderr mismatch] (normal)

All bit one oft these all seem to be stderr mismatches rather than
actual problems.

My validate run on armhf is still running.

Erik
--
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/
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