macOS Big Sur

[fxcoudert]

• Not yet ready for merging, to be shipped as soon as Big Sur ships.
• Related: macOS Big Sur install#346

[jonchang]

Suggested change

	when "11.0" then "12.2"
	when "10.15" then latest_stable
	when "11.0" then latest_stable
	when "10.15" then "12.2"

[MikeMcQuaid]

• to be shipped as soon as Big Sur ships.

I don't think this can ship until at least #9010 does and/or we have working homebrew-core CI.

[MikeMcQuaid]

This should not ship until we have working Big Sur CI. We cannot support what we do not have CI for.

[dvaldivia]

Will this PR make it so homebrew only works with XCode 12.2 for macOS Big Sur 11.0?

[fxcoudert]

We only support the latest Xcode on all platforms

[dvaldivia]

@fxcoudert my bad, I though XCode 12.1 was the lastest for macOS 11.0

[mathieuhendey]

Now that Xcode 12.2 has been released through the App Store (along with its CLI tools (see image), can this be merged?

Apologies for commenting without having contributed to brew, I've committed a few formulae just, I'm just interested.

[dvaldivia]

@mathieuhendey seems they are waiting to set up some CI for Big Sur

[fxcoudert]

@mathieuhendey we are setting up a CI and will start supporting Big Sur as soon as we are ready

[fxcoudert]

Rebasing. I'm upping the minimum Xcode for Big Sur to 12.2 because 12.0 did not have a Big Sur SDK. 12.2 is the version that coincided with the Big Sur release, as well.

[fxcoudert]

I think it is time for this PR, and companion Homebrew/install#346

• We have nodes available for Homebrew core, we have 15% coverage of core bottles in 12 hours.
• There have been no major crisis
• We're likely to turn on Big Sur CI for all formulas in 24 to 48 hours (i.e., around Monday)
• For things that are not bottled, Catalina bottles are used anyway

[fxcoudert]

And Big Sur CI is now turned on, with 25% formulas already bottled

[MikeMcQuaid]

Thanks @fxcoudert!