I believe I've just fixed this. I think it was non-deterministic in some way that I don't fully understand, but hopefully I've made it deterministic now. https://phabricator.haskell.org/rGHC7843c71c7e48cdba115bef422184e855ede23a67 On 24 June 2016 at 15:12, Simon Peyton Jones via ghc-devs < ghc-devs@haskell.org> wrote:

These failures are odd. One is this change in T8761 which I'm sure is not my fault. I saw that simonmar did some hFlush thing -- could that be it?

Simon

+++ ./T8761.run/T8761.comp.stderr.normalised 2016-06-24 15:00:22.975083533 +0100 @@ -1,3 +1,7 @@ +pattern Q1 x1_0 x2_1 x3_2 <- ((x1_0, x2_1), [x3_2], _, _) +pattern x1_0 Q2 x2_1 = ((x1_0, x2_1)) +pattern Q3 {qx3, qy3, qz3} <- ((qx3, qy3), [qz3]) where + Q3 qx3 qy3 qz3 = ((qx3, qy3), [qz3]) T8761.hs:(16,1)-(39,13): Splicing declarations do { [qx1, qy1, qz1] <- mapM (/ i -> newName $ "x" ++ show i) [1, 2, 3]; @@ -119,10 +123,6 @@ pattern Pup x <- MkUnivProv x pattern Puep :: forall a. forall b. Show b => a -> b -> (ExProv, a) pattern Puep x y <- (MkExProv y, x) -pattern Q1 x1_0 x2_1 x3_2 <- ((x1_0, x2_1), [x3_2], _, _) -pattern x1_0 Q2 x2_1 = ((x1_0, x2_1)) -pattern Q3 {qx3, qy3, qz3} <- ((qx3, qy3), [qz3]) where - Q3 qx3 qy3 qz3 = ((qx3, qy3), [qz3]) pattern T8761.P :: GHC.Types.Bool pattern T8761.Pe :: () => forall (a0_0 :: *) . a0_0 -> T8761.Ex pattern T8761.Pu :: forall (a0_0 :: *) . a0_0 -> a0_0

| -----Original Message----- | From: noreply@phabricator.haskell.org | [mailto:noreply@phabricator.haskell.org] | Sent: 24 June 2016 14:50 | To: Simon Peyton Jones | Subject: [Diffusion] [Build Failed] rGHCbb84ee44e30e: Improve pretty- | printing of Avail | | Harbormaster failed to build B10226: rGHCbb84ee44e30e: Improve pretty- | printing of Avail! | | BRANCHES | master, wip/rae | | USERS | simonpj (Author) | | COMMIT | https://phabricator.haskell.org/rGHCbb84ee44e30e | | EMAIL PREFERENCES | https://phabricator.haskell.org/settings/panel/emailpreferences/ | | To: simonpj, Harbormaster _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs