luvit: build from source

[carlocab]

As mentioned in #69036, the formula install block downloads:

• un-checksummed files and pipes one of them into sh; and,
• binary executables that are installed into its prefix.

This commit fixes that by bypassing the download and building them all
from source.

---

• Have you followed the guidelines for contributing?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing brew install <formula>)?

[carlocab]

The ARM build failure comes from the resource luvi, which has a vendored dependency luv, which fails to build, found here: https://github.com/luvit/luvi/tree/v2.11.0/deps

luv has its vendored dependencies in https://github.com/luvit/luv/tree/02237cdab45f264351d30128e21c14fe5959a2d6/deps. I am fairly certain the build failure comes from either vendored libuv or vendored luajit. In either case, the solution would be to get the build to use Homebrew's versions of both, and that should get this to build on ARM.

[carlocab]

Here's a start at the attempt of getting luvit to build on ARM: #69321

[SeekingMeaning]

Revision bump? (Not sure myself)

[carlocab]

Not sure... But I guess I don't mind closing this in favour of #69036. I make changes that are worth a revision bump there.