bazel: patch bazel for macOS 10.12 Sierra

[ed-flanagan]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same formula update/change?
• Have you built your formula locally prior to submission with brew install <formula> (where <formula> is the name of the formula you're submitting)?
• Does your submission pass brew audit --new-formula <formula> (after doing brew install <formula>)?

---

• Use nanosleep(2) instead of poll(2) to sleep
• See
  bazelbuild/bazel@fefd232

---

Referenced:

• Popular formulae with bottling trouble on 10.12 #4841
• Immediate "couldn't connect to server at..."  bazelbuild/bazel#1767
• bazel: fix build on macOS 10.12 #5041
• bazelbuild/bazel@fefd232

[ilovezfs]

I think I'd like to wait on a new release here... CC @damieng for thoughts

[zmwangx]

Nice, but you need to put it into a stable block:

  desc "Google's own build tool"
  homepage "https://www.bazel.io/"
  head "https://github.com/bazelbuild/bazel.git"

  stable do
    url "https://github.com/bazelbuild/bazel/archive/0.3.1.tar.gz"
    sha256 "52beafc9d78fc315115226f31425e21df1714d96c7dfcdeeb02306e2fe028dd8"

    # Fix build on macOS 10.12 Sierra
    patch do
      url "https://github.com/bazelbuild/bazel/commit/fefd2329f4812bcb513294fdf417fc726a86ddfd.diff"
      sha256 "73455ede4acb9e40923838cb66750a5baacc6b6f8eaaeed72df02dbca38bbe73"
    end
  end

  bottle do
    cellar :any_skip_relocation
    sha256 "fda77dc7aa1722d9586ec0a4148357ba89436d641c278e7a93da2486ba059059" => :el_capitan
    sha256 "0fcea9e375d29bda7c7e291172cd59d235512952a377f469e684315c109f6dfb" => :yosemite
  end

[ed-flanagan]

Placed the patch in the stable block.

[ilovezfs]

I think I'd like to wait on a new release here... CC @damienmg for thoughts

[damienmg]

We just pushed a canary today. We have a 1 week baking but we are basically blocking on a couple of bugfixes. I still believe we should be able to release by next tuesday.

[zmwangx]

Next Tuesday is a week from now, and bazel is popular enough to be on my #4841 list. What about we ship the patch now so people at least have something to work with.

[damienmg]

This patch is pretty much harmless and fixes the sierra issue so SGTM

[zmwangx]

@ilovezfs I'll leave the decision to you.

[ilovezfs]

If @damienmg is happy to ⛵ then no objection from me!

[zmwangx]

[ilovezfs]

@ed-flanagan thanks for your contribution to Homebrew! 🎉