Homebrew Formula for LightGBM

[StrikerRUS]

Upstream issue: Homebrew/homebrew-core#43244.

@ankane Thanks a lot for your efforts!

Please ping us if any help is needed from our side.

Want to hear opinion of macOS users @jameslamb @Laurae2 @henry0312.

[ankane]

Hey @StrikerRUS, the formula was just accepted, so Mac users can now do:

brew install lightgbm

Homebrew pre-compiles ("bottles") formula, so it installs in a couple seconds 🔥

[jameslamb]

WOW thank you so much @ankane this is great!

I read the formula and it looks good to me. @StrikerRUS we should consider updating that formula as a part of our release process. I think all we'd need to do is update which archive it points to.

[StrikerRUS]

@ankane Awesome! Many thanks to you!

@jameslamb

we should consider updating that formula as a part of our release process.

That's for sure! We should send PR to Homebrew repo right after LightGBM new release.

I think all we'd need to do is update which archive it points to.

@ankane Can you please confirm this? Should we only update url and sha256 fields in the formula?

[ankane]

@StrikerRUS Yeah, unless the build instructions change. Feel free to ping me if you run into issues with it.

[StrikerRUS]

@ankane Got it! Thanks a lot for your kindness!

[StrikerRUS]

@ankane BTW, is it possible to add an option --mpi to the formula to install with the MPI support? Maybe for some users it will be useful.
It will require only adding open-mpi dependency and -DUSE_MPI=ON flag for CMake.
https://github.com/microsoft/LightGBM/blob/master/docs/Installation-Guide.rst#apple-clang-2

[ankane]

It looks like options aren't allowed in formula in Homebrew core. From the docs:

Note: options are not allowed in Homebrew/homebrew-core as they are not tested by CI.

https://github.com/Homebrew/brew/blob/master/docs/Formula-Cookbook.md

Also, I don't see any formula with optional dependencies, so I imagine that's not allowed as well.

[StrikerRUS]

@ankane Oh, I see! I'm sorry, I'm not very familiar with brew. I asked only because I have brew install gcc --without-multilib command (outdated already) in my head 😃 .