A simple zsh_completion

[sirmspencer]

Output of brew config

HOMEBREW_VERSION: 4.3.24-5-gbd3c7f8
ORIGIN: https://github.com/Homebrew/brew
HEAD: bd3c7f80530d21e791ccc01b02234b299941dd29
Last commit: 17 hours ago
Core tap HEAD: 25798a56353f293e543f7580478e827d37d07158
Core tap last commit: 3 days ago
Core tap JSON: 24 Sep 00:57 UTC
Core cask tap HEAD: 2aee59171874d5f2dda4baa75f781b3a92790245
Core cask tap last commit: 3 days ago
Core cask tap JSON: 24 Sep 00:57 UTC
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 12
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 3.3.4 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.4_1/bin/ruby
CPU: dodeca-core 64-bit kabylake
Clang: 15.0.0 build 1500
Git: 2.46.0 => /usr/local/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 14.6.1-x86_64
CLT: 15.3.0.0.1.1708646388
Xcode: N/A

Output of brew doctor

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Warning: You have uncommitted modifications to Homebrew/homebrew-core.
If this is a surprise to you, then you should stash these modifications.
Stashing returns Homebrew to a pristine state but can be undone
should you later need to do so for some reason.
  cd /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core && git stash -u && git clean -d -f

Uncommitted files:
  ?? Formula/d/do.rb
  ?? Formula/d/doit.rb

Warning: Homebrew's "sbin" was not found in your PATH but you have installed
formulae that put executables in /usr/local/sbin.
Consider setting your PATH for example like so:
  echo 'export PATH="/usr/local/sbin:$PATH"' >> ~/.zshrc

Description of issue

I'm trying to hook in even the most basic zsh completion and I can't get it to register.

#compdef doit

doit() {
    echo "Hello from doit zsh"
    _values "abc" "test"
}

Formula

class Doit < Formula
  desc "a purposely simple aliasing tool"
  homepage ""
  url "https://github.com/sirmspencer/doit/archive/refs/tags/v0.1.35.tar.gz"
  sha256 ""
  license "GPL-3.0"

  depends_on "borkdude/brew/babashka"

  def install
    bin.install "bb/doit"
    bash_completion.install "doit-completion.bash"
    zsh_completion.install "doit-completion.zsh" => "_doit"
  end
end

I can see the zsh file in /usr/local/Cellar/doit/0.1.33/share/zsh/site-functions/_doit and /usr/local/share/zsh/site-functions/_doit

I'm sorta copying a different cask, leiningen. I can modify its zsh @ _lein and see the changes from that take affect.

The bash file doesn't work in linux either. Maybe its a related missing step.