(This post is available online at https://ghc.haskell.org/trac/ghc/blog/weekly20150310) Hi *, It's that time again! Today GHC HQ met on a Tuesday to avoid some scheduling conflicts, and that means it's time to send some news to people. Just a quick reminder from last week: we're hoping to make our third GHC 7.10.1 release candidate on '''Friday, March 13th''', with the final release on '''Friday, March 27th'''. - Today, GHC HQ mostly talked about 7.10 bugs; HEAD is steaming along as usual with no impediments, but we've got several critical bugs we plan on landing fixes for this week; see milestone:7.10.1 for more. But we've also had a little more list activity this week than we did before: - Joachim Breitner asks: how do I extend the blocks in a C-- graph? Jan popped in with advice, but it looks like Joachim found a rather simple solution himself. https://mail.haskell.org/pipermail/ghc-devs/2015-March/008467.html - Karel Gardas wrote to the list about how to better parallelize the GHC build. For background, he's using a UltraSPARC T1-CPU/T2000 server with 32 hardware threads over 8 cores, where parallelism is a bigger win than raw single-threaded performance. But despite that, the performance is of the parallel GHC build is relatively abysmal - and Karel wants help brainstorming ideas to fix it. https://mail.haskell.org/pipermail/ghc-devs/2015-March/008474.html - Herbert Valerio Riedel noted that there are new git hooks in place for all developers on `git.haskell.org`, which will reject new kinds of pushes. In particular, Herbert took the time to implement commit message validation, and whitespace validation. https://mail.haskell.org/pipermail/ghc-devs/2015-March/008480.html Some noteworthy commits that went into `ghc.git` in the past week include: - Commit eb3661f2b9f8472f3714774126ebe1183484dd85 - Re-export `<$>` from Prelude (#10113) - Commit 479523f3c37894d63352f1718e06696f3ed63143 - Re-export `<$` from Prelude (#10113) - Commit b359c886cd7578ed083bcedcea05d315ecaeeb54 - Custom `Typeable` solver, that keeps track of kinds (#9858) - Commit 76b1e11943d794da61d342c072a783862a9e2a1a - Improve core linter so it catches `unsafeCoerce` problems (#9122) - Commit 7a2d65a4d93273c89fbb1d19e282d5933c67c7ca - Define proper `MINIMAL` pragma for `class Ix` (#10142) Closed tickets the past week include: #7854, #10118, #10119, #3321, #10132, #9987, #10126, #9707, #10142, #10147, #10113, #9524, #10058, #10100, #2991, #10140, and #9122. -- Regards, Austin Seipp, Haskell Consultant Well-Typed LLP, http://www.well-typed.com/