[tor-bugs] #30860 [Core Tor/Tor]: Add a chutney job that runs on macOS, so that IPv6 chutney tests work

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#30860: Add a chutney job that runs on macOS, so that IPv6 chutney tests work
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  teor
     Type:  enhancement                          |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.2.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  CI, PTs, sponsor-28-maybe,           |  Actual Points:  0.4
  029-backport, 035-backport, 040-backport,      |
  network-team-roadmap-2019-Q1Q2, tor-ci, teor-  |
  backlog-ci, 042-deferred-20190918              |
Parent ID:  #31851                               |         Points:  0.5
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor27-can
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Comment (by teor):

 Replying to [comment:11 teor]:
 > I want to try these changes:
 > 0. Re-run all the builds, so they benefit from the build caches

 The build caches aren't the issue.

 > 1. Reorder the builds so the slowest builds run first
 > 2. De-merge the chutney/check and distcheck/rust builds

 Rather than de-merging the builds, I disabled make check on them. I also
 put the slowest compilers (macOS/gcc, Linux/clang) on the fastest build on
 each platform.

 I activated fast_finish, but I don't think it will make much difference:
 the chutney job is the slowest job.

 Here are the latest PRs:
 * 0.2.9: ​https://github.com/torproject/tor/pull/1369
 * 0.3.5: ​https://github.com/torproject/tor/pull/1370
 * 0.4.1: ​https://github.com/torproject/tor/pull/1372
 * master: ​https://github.com/torproject/tor/pull/1373

 Clean merges - testing only:
 * 0.4.0: ​https://github.com/torproject/tor/pull/1371

 But macOS chutney is really slow, so I might need to make a separate make
 target that only runs the IPv6 networks.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30860#comment:12>
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