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ci: Timeline to drop Mac High Sierra support #11692

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EricCousineau-TRI opened this issue Jun 20, 2019 · 5 comments

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@EricCousineau-TRI
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commented Jun 20, 2019

To reduce number of builds, we may want to turn down on Mac by turning of High Sierra.

Any hard votes against doing this by September, 2019? (in preparation for Mac Catalina)
Plan is to turn this off once Catalina is out, possibly once we start adding beta CI configurations (per Jermey's comment below).

Relates #11610

\cc @jwnimmer-tri @RussTedrake @soonho-tri

@jwnimmer-tri

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commented Jun 20, 2019

In my opinion we should turn off High Sierra CI configurations exactly when we begin adding Catalina CI configurations, per our de-facto {N, N-1} policy for macOS.

@soonho-tri

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commented Jun 20, 2019

  • Apple says that "macOS Catalina (10.15) will be released in the fall of 2019" without further details.
  • I guess it will take some time for our CI infrastructures to be ready to run 10.15. (as it happened last year). So I expect that we will have 2 - 3 months that we will only run 10.14 in CI if we drop 10.13.

So, if we want to stick to the N/N-1 policy for macOS, we need to wait until 10.15 is available in CI. I'm fine if we want to change the policy temporarily just to supporting 10.14.

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commented Jun 20, 2019

Let me clarify my position in light of that: we should turn off High Sierra CI configurations exactly when Catalina is released, or we begin adding Catalina beta CI configurations, whichever comes first.

@jamiesnape

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commented Jun 20, 2019

My guess would be that Catalina builds will be up fairly quickly (within a month of release). Mojave was unusual since the required filesystem type changed.

@RussTedrake

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commented Jun 21, 2019

fwiw -- i have no attachment to high sierra. all the mac use cases I'm aware of are on Mojave.

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