Running nox-review presently :).

Given that this is a mass darwin rebuild, I'd probably send it to staging. Otherwise looks good.

Uh, I see no announcement on ML or mention on llvm.org yet :-) If llvmPackages themselves build OK after this, merging to staging should be a no-brainer. (better have a look at official NEWS as well before merging to master, though)

Hmm, don't currently have the resources to complete the nox-review myself in a timely manner, sorry :).

And the release is finalized but indeed no official announcement yet.

The release docs are here: http://releases.llvm.org/4.0.1/docs/ReleaseNotes.html
although it doesn't mention anything about what's fixed in the point release (indeed it refers to itself as "4.0.0"), but release management is hard.

As for determining what's changed I think the best to be done is bouncing through the commits on the release branches, for example LLVM 4.0 commits, but we'll see once the release is mentioned on the ML/website :).

@vcunat If you look through llvm-commits@ (this week's threads, you'll see it's not as premature is it might seem :).

Anyway, hopefully no big deal just need to rebuild all the things 😁

That doc seems just for 3.9.x -> 4.0.0 update. No need to finish nox-review; it would be thousands of packages just on x86_64-linux. Trying to build Darwin stdenv would actually give some confidence bump, but I'll chance a merge if noone volunteers for that soon. (Hydra's rebuilding staging heavily ATM and I'd prefer to wait until the next iteration anyway.)

I'll do a build of the stdenv and some basic packages.

Forgot to report back, everything looks ok on darwin (and nixos).

Staged.

It's officially mentioned on the website now, haha: http://llvm.org/

Bugged'em after it was pointed out that it didn't /look/ officially released yet 😇. No hard feelings-- it's a volunteer job and I'm sure we can sympathize with how challenging release management can be!

Even the announcement mail was about a week after this PR was submitted...