Can I request a formula to be built?

[singularitti]

Output of brew config

HOMEBREW_VERSION: 4.0.6-147-gb3684e5
ORIGIN: https://github.com/Homebrew/brew
HEAD: b3684e55a7a0090e50d975c347961cb57a5ffcb5
Last commit: 12 hours ago
Core tap: N/A
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_EDITOR: code
HOMEBREW_MAKE_JOBS: 10
Homebrew Ruby: 2.6.10 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
CPU: 10-core 64-bit arm_firestorm_icestorm
Clang: 14.0.0 build 1400
Git: 2.37.1 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 7.86.0 => /usr/bin/curl
macOS: 13.2.1-arm64
CLT: 14.2.0.0.1.1668646533
Xcode: N/A
Rosetta 2: false

Output of brew doctor

Your system is ready to brew.

Description of issue

It is my first time requesting a formula here, so I don't think this is the right place. I found an interesting software called codon, and it can be built on macOS. I would appreciate it very much if someone could help me build it.

[SMillerDev]

https://docs.brew.sh/Adding-Software-to-Homebrew

[carlocab]

Their build instructions are pretty straightforward. It looks like you can just lift the install method from halide or enzyme.

However, I'm not sure this is suitable for inclusion into Homebrew/core. They vendor multiple dependencies that are provided by Homebrew. See https://github.com/exaloop/codon/blob/2d20e1b35879bd97acec1c0ec3835ef3919dd32f/cmake/deps.cmake.

I suggest either creating a formula in your own tap and/or asking upstream (or sending a PR) to support using system-provided versions of the libraries they vendor. The particularly important ones are zlib, xz, bz2, bdwgc, and re2. But support for the rest would be better too.

[gromgit]

Or see here for a worked example of How Formulae Are Made, specifically how to map Codon source build instructions to Homebrew formula DSL statements.

Or if you just want to use the darn thing, brew install gromgit/dev/codon. However:

1. I update everything in gromgit/dev as and when I feel like it, so no promises.
2. I'll only contribute this formula to homebrew/core when upstream fixes all of @carlocab's concerns. (It looks a lot like upstream thought "I'm providing binaries, plus users will be happy to build everything from scratch, so I don't have to tell them to install anything"...conveniently forgetting cmake and ninja.)
3. I've included an ARM Monterey bottle, and may include one or two more Intel bottles...when they finish building. If your machine isn't ARM Monterey, you've just triggered a long build session, because upstream said "build everything from scratch...including LLVM 15".

[carlocab]

I didn't even notice they used an LLVM fork, because of course they are. That's an even bigger dealbreaker to me -- we have enough formulae building their own copies of LLVM in Homebrew/core.